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authorValentin Bartenev <vbart@nginx.com>2013-03-20 14:36:57 +0400
committerValentin Bartenev <vbart@nginx.com>2013-03-20 14:36:57 +0400
commit2686cb44529462614a1846f29922bb68852dafb6 (patch)
treea46abd5e6cab450dbc23f220a424a296c0877e2b /src
parentcf64a6c5361b23f1aa182e50537ebb4c6c34c453 (diff)
Preliminary experimental support for SPDY draft 2.
Diffstat (limited to 'src')
-rw-r--r--src/http/modules/ngx_http_ssl_module.c17
-rw-r--r--src/http/ngx_http.c23
-rw-r--r--src/http/ngx_http.h14
-rw-r--r--src/http/ngx_http_core_module.c23
-rw-r--r--src/http/ngx_http_core_module.h8
-rw-r--r--src/http/ngx_http_parse.c148
-rw-r--r--src/http/ngx_http_request.c72
-rw-r--r--src/http/ngx_http_request.h3
-rw-r--r--src/http/ngx_http_request_body.c14
-rw-r--r--src/http/ngx_http_spdy.c2881
-rw-r--r--src/http/ngx_http_spdy.h235
-rw-r--r--src/http/ngx_http_spdy_filter_module.c999
-rw-r--r--src/http/ngx_http_spdy_module.c351
-rw-r--r--src/http/ngx_http_spdy_module.h36
-rw-r--r--src/http/ngx_http_upstream.c13
15 files changed, 4823 insertions, 14 deletions
diff --git a/src/http/modules/ngx_http_ssl_module.c b/src/http/modules/ngx_http_ssl_module.c
index eb1e61d2d..a6c803da0 100644
--- a/src/http/modules/ngx_http_ssl_module.c
+++ b/src/http/modules/ngx_http_ssl_module.c
@@ -275,13 +275,28 @@ static int
ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
const unsigned char **out, unsigned int *outlen, void *arg)
{
-#if (NGX_DEBUG)
+#if (NGX_HTTP_SPDY || NGX_DEBUG)
ngx_connection_t *c;
c = ngx_ssl_get_connection(ssl_conn);
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL NPN advertised");
#endif
+#if (NGX_HTTP_SPDY)
+ {
+ ngx_http_connection_t *hc;
+
+ hc = c->data;
+
+ if (hc->addr_conf->spdy) {
+ *out = (unsigned char *) NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
+ *outlen = sizeof(NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1;
+
+ return SSL_TLSEXT_ERR_OK;
+ }
+ }
+#endif
+
*out = (unsigned char *) NGX_HTTP_NPN_ADVERTISE;
*outlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1;
diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index f1f8a48e0..8704c404c 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -1225,6 +1225,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_SSL)
ngx_uint_t ssl;
#endif
+#if (NGX_HTTP_SPDY)
+ ngx_uint_t spdy;
+#endif
/*
* we cannot compare whole sockaddr struct's as kernel
@@ -1277,6 +1280,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_SSL)
ssl = lsopt->ssl || addr[i].opt.ssl;
#endif
+#if (NGX_HTTP_SPDY)
+ spdy = lsopt->spdy || addr[i].opt.spdy;
+#endif
if (lsopt->set) {
@@ -1307,6 +1313,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_SSL)
addr[i].opt.ssl = ssl;
#endif
+#if (NGX_HTTP_SPDY)
+ addr[i].opt.spdy = spdy;
+#endif
return NGX_OK;
}
@@ -1337,6 +1346,14 @@ ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
}
}
+#if (NGX_HTTP_SPDY && NGX_HTTP_SSL && !defined TLSEXT_TYPE_next_proto_neg)
+ if (lsopt->spdy && lsopt->ssl) {
+ ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+ "nginx was built without OpenSSL NPN support, "
+ "SPDY is not enabled for %s", lsopt->addr);
+ }
+#endif
+
addr = ngx_array_push(&port->addrs);
if (addr == NULL) {
return NGX_ERROR;
@@ -1820,6 +1837,9 @@ ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport,
#if (NGX_HTTP_SSL)
addrs[i].conf.ssl = addr[i].opt.ssl;
#endif
+#if (NGX_HTTP_SPDY)
+ addrs[i].conf.spdy = addr[i].opt.spdy;
+#endif
if (addr[i].hash.buckets == NULL
&& (addr[i].wc_head == NULL
@@ -1881,6 +1901,9 @@ ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport,
#if (NGX_HTTP_SSL)
addrs6[i].conf.ssl = addr[i].opt.ssl;
#endif
+#if (NGX_HTTP_SPDY)
+ addrs6[i].conf.spdy = addr[i].opt.spdy;
+#endif
if (addr[i].hash.buckets == NULL
&& (addr[i].wc_head == NULL
diff --git a/src/http/ngx_http.h b/src/http/ngx_http.h
index c264f1634..3d758bfd9 100644
--- a/src/http/ngx_http.h
+++ b/src/http/ngx_http.h
@@ -20,6 +20,10 @@ typedef struct ngx_http_file_cache_s ngx_http_file_cache_t;
typedef struct ngx_http_log_ctx_s ngx_http_log_ctx_t;
typedef struct ngx_http_chunked_s ngx_http_chunked_t;
+#if (NGX_HTTP_SPDY)
+typedef struct ngx_http_spdy_stream_s ngx_http_spdy_stream_t;
+#endif
+
typedef ngx_int_t (*ngx_http_header_handler_pt)(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
typedef u_char *(*ngx_http_log_handler_pt)(ngx_http_request_t *r,
@@ -35,6 +39,9 @@ typedef u_char *(*ngx_http_log_handler_pt)(ngx_http_request_t *r,
#include <ngx_http_busy_lock.h>
#include <ngx_http_core_module.h>
+#if (NGX_HTTP_SPDY)
+#include <ngx_http_spdy.h>
+#endif
#if (NGX_HTTP_CACHE)
#include <ngx_http_cache.h>
#endif
@@ -80,12 +87,14 @@ ngx_int_t ngx_http_add_listen(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
void ngx_http_init_connection(ngx_connection_t *c);
+void ngx_http_close_connection(ngx_connection_t *c);
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
int ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg);
#endif
ngx_int_t ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b);
+ngx_int_t ngx_http_parse_uri(ngx_http_request_t *r);
ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r,
ngx_uint_t merge_slashes);
ngx_int_t ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
@@ -104,12 +113,17 @@ ngx_int_t ngx_http_parse_chunked(ngx_http_request_t *r, ngx_buf_t *b,
ngx_http_chunked_t *ctx);
+ngx_http_request_t *ngx_http_create_request(ngx_connection_t *c);
+ngx_int_t ngx_http_process_request_uri(ngx_http_request_t *r);
+ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
+void ngx_http_process_request(ngx_http_request_t *r);
void ngx_http_update_location_config(ngx_http_request_t *r);
void ngx_http_handler(ngx_http_request_t *r);
void ngx_http_run_posted_requests(ngx_connection_t *c);
ngx_int_t ngx_http_post_request(ngx_http_request_t *r,
ngx_http_posted_request_t *pr);
void ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc);
+void ngx_http_free_request(ngx_http_request_t *r, ngx_int_t rc);
void ngx_http_empty_handler(ngx_event_t *wev);
void ngx_http_request_empty_handler(ngx_http_request_t *r);
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index c4914997b..80cf2d6b9 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -2130,6 +2130,13 @@ ngx_http_gzip_ok(ngx_http_request_t *r)
return NGX_DECLINED;
}
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ r->gzip_ok = 1;
+ return NGX_OK;
+ }
+#endif
+
ae = r->headers_in.accept_encoding;
if (ae == NULL) {
return NGX_DECLINED;
@@ -2464,6 +2471,10 @@ ngx_http_subrequest(ngx_http_request_t *r,
sr->request_body = r->request_body;
+#if (NGX_HTTP_SPDY)
+ sr->spdy_stream = r->spdy_stream;
+#endif
+
sr->method = NGX_HTTP_GET;
sr->http_version = r->http_version;
@@ -4130,6 +4141,18 @@ ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
#endif
}
+ if (ngx_strcmp(value[n].data, "spdy") == 0) {
+#if (NGX_HTTP_SPDY)
+ lsopt.spdy = 1;
+ continue;
+#else
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "the \"spdy\" parameter requires "
+ "ngx_http_spdy_module");
+ return NGX_CONF_ERROR;
+#endif
+ }
+
if (ngx_strncmp(value[n].data, "so_keepalive=", 13) == 0) {
if (ngx_strcmp(&value[n].data[13], "on") == 0) {
diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
index 921ebbcaa..5b38000d8 100644
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -75,6 +75,9 @@ typedef struct {
#if (NGX_HTTP_SSL)
unsigned ssl:1;
#endif
+#if (NGX_HTTP_SPDY)
+ unsigned spdy:1;
+#endif
#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
unsigned ipv6only:1;
#endif
@@ -232,7 +235,10 @@ struct ngx_http_addr_conf_s {
ngx_http_virtual_names_t *virtual_names;
#if (NGX_HTTP_SSL)
- ngx_uint_t ssl; /* unsigned ssl:1; */
+ unsigned ssl:1;
+#endif
+#if (NGX_HTTP_SPDY)
+ unsigned spdy:1;
#endif
};
diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index a6ee74ecf..34b3b85d0 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -1075,6 +1075,154 @@ header_done:
ngx_int_t
+ngx_http_parse_uri(ngx_http_request_t *r)
+{
+ u_char *p, ch;
+ enum {
+ sw_start = 0,
+ sw_after_slash_in_uri,
+ sw_check_uri,
+ sw_uri
+ } state;
+
+ state = sw_start;
+
+ for (p = r->uri_start; p != r->uri_end; p++) {
+
+ ch = *p;
+
+ switch (state) {
+
+ case sw_start:
+
+ if (ch != '/') {
+ return NGX_ERROR;
+ }
+
+ state = sw_after_slash_in_uri;
+ break;
+
+ /* check "/.", "//", "%", and "\" (Win32) in URI */
+ case sw_after_slash_in_uri:
+
+ if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+ state = sw_check_uri;
+ break;
+ }
+
+ switch (ch) {
+ case ' ':
+ r->space_in_uri = 1;
+ state = sw_check_uri;
+ break;
+ case '.':
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+ case '%':
+ r->quoted_uri = 1;
+ state = sw_uri;
+ break;
+ case '/':
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+#if (NGX_WIN32)
+ case '\\':
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+#endif
+ case '?':
+ r->args_start = p + 1;
+ state = sw_uri;
+ break;
+ case '#':
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+ case '+':
+ r->plus_in_uri = 1;
+ break;
+ default:
+ state = sw_check_uri;
+ break;
+ }
+ break;
+
+ /* check "/", "%" and "\" (Win32) in URI */
+ case sw_check_uri:
+
+ if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+ break;
+ }
+
+ switch (ch) {
+ case '/':
+#if (NGX_WIN32)
+ if (r->uri_ext == p) {
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+ }
+#endif
+ r->uri_ext = NULL;
+ state = sw_after_slash_in_uri;
+ break;
+ case '.':
+ r->uri_ext = p + 1;
+ break;
+ case ' ':
+ r->space_in_uri = 1;
+ break;
+#if (NGX_WIN32)
+ case '\\':
+ r->complex_uri = 1;
+ state = sw_after_slash_in_uri;
+ break;
+#endif
+ case '%':
+ r->quoted_uri = 1;
+ state = sw_uri;
+ break;
+ case '?':
+ r->args_start = p + 1;
+ state = sw_uri;
+ break;
+ case '#':
+ r->complex_uri = 1;
+ state = sw_uri;
+ break;
+ case '+':
+ r->plus_in_uri = 1;
+ break;
+ }
+ break;
+
+ /* URI */
+ case sw_uri:
+
+ if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+ break;
+ }
+
+ switch (ch) {
+ case ' ':
+ r->space_in_uri = 1;
+ break;
+ case '#':
+ r->complex_uri = 1;
+ break;
+ }
+ break;
+ }
+ }
+
+ return NGX_OK;
+}
+
+
+ngx_int_t
ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
{
u_char c, ch, decoded, *p, *u;
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 2e6c9e25d..8942deb33 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -11,7 +11,6 @@
static void ngx_http_wait_request_handler(ngx_event_t *ev);
-static ngx_http_request_t *ngx_http_create_request(ngx_connection_t *c);
static void ngx_http_process_request_line(ngx_event_t *rev);
static void ngx_http_process_request_headers(ngx_event_t *rev);
static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
@@ -31,9 +30,6 @@ static ngx_int_t ngx_http_process_connection(ngx_http_request_t *r,
static ngx_int_t ngx_http_process_user_agent(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
-static ngx_int_t ngx_http_process_request_uri(ngx_http_request_t *r);
-static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
-static void ngx_http_process_request(ngx_http_request_t *r);
static ngx_int_t ngx_http_validate_host(ngx_str_t *host, ngx_pool_t *pool,
ngx_uint_t alloc);
static ngx_int_t ngx_http_set_virtual_server(ngx_http_request_t *r,
@@ -56,9 +52,7 @@ static void ngx_http_set_lingering_close(ngx_http_request_t *r);
static void ngx_http_lingering_close_handler(ngx_event_t *ev);
static ngx_int_t ngx_http_post_action(ngx_http_request_t *r);
static void ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error);
-static void ngx_http_free_request(ngx_http_request_t *r, ngx_int_t error);
static void ngx_http_log_request(ngx_http_request_t *r);
-static void ngx_http_close_connection(ngx_connection_t *c);
static u_char *ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len);
static u_char *ngx_http_log_error_handler(ngx_http_request_t *r,
@@ -318,6 +312,12 @@ ngx_http_init_connection(ngx_connection_t *c)
rev->handler = ngx_http_wait_request_handler;
c->write->handler = ngx_http_empty_handler;
+#if (NGX_HTTP_SPDY)
+ if (hc->addr_conf->spdy) {
+ rev->handler = ngx_http_spdy_init;
+ }
+#endif
+
#if (NGX_HTTP_SSL)
{
ngx_http_ssl_srv_conf_t *sscf;
@@ -487,7 +487,7 @@ ngx_http_wait_request_handler(ngx_event_t *rev)
}
-static ngx_http_request_t *
+ngx_http_request_t *
ngx_http_create_request(ngx_connection_t *c)
{
ngx_pool_t *pool;
@@ -727,6 +727,21 @@ ngx_http_ssl_handshake_handler(ngx_connection_t *c)
c->ssl->no_wait_shutdown = 1;
+#if (NGX_HTTP_SPDY && defined TLSEXT_TYPE_next_proto_neg)
+ {
+ unsigned int len;
+ const unsigned char *data;
+ static const ngx_str_t spdy = ngx_string(NGX_SPDY_NPN_NEGOTIATED);
+
+ SSL_get0_next_proto_negotiated(c->ssl->connection, &data, &len);
+
+ if (len == spdy.len && ngx_strncmp(data, spdy.data, spdy.len) == 0) {
+ ngx_http_spdy_init(c->read);
+ return;
+ }
+ }
+#endif
+
c->log->action = "waiting for request";
c->read->handler = ngx_http_wait_request_handler;
@@ -985,7 +1000,7 @@ ngx_http_process_request_line(ngx_event_t *rev)
}
-static ngx_int_t
+ngx_int_t
ngx_http_process_request_uri(ngx_http_request_t *r)
{
ngx_http_core_srv_conf_t *cscf;
@@ -1687,7 +1702,7 @@ ngx_http_process_multi_header_lines(ngx_http_request_t *r, ngx_table_elt_t *h,
}
-static ngx_int_t
+ngx_int_t
ngx_http_process_request_header(ngx_http_request_t *r)
{
if (r->headers_in.server.len == 0
@@ -1757,7 +1772,7 @@ ngx_http_process_request_header(ngx_http_request_t *r)
}
-static void
+void
ngx_http_process_request(ngx_http_request_t *r)
{
ngx_connection_t *c;
@@ -2434,6 +2449,13 @@ ngx_http_finalize_connection(ngx_http_request_t *r)
{
ngx_http_core_loc_conf_t *clcf;
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ ngx_http_close_request(r, 0);
+ return;
+ }
+#endif
+
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (r->main->count != 1) {
@@ -2488,6 +2510,12 @@ ngx_http_set_write_handler(ngx_http_request_t *r)
ngx_http_test_reading;
r->write_event_handler = ngx_http_writer;
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ return NGX_OK;
+ }
+#endif
+
wev = r->connection->write;
if (wev->ready && wev->delayed) {
@@ -2635,6 +2663,19 @@ ngx_http_test_reading(ngx_http_request_t *r)
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http test reading");
+#if (NGX_HTTP_SPDY)
+
+ if (r->spdy_stream) {
+ if (c->error) {
+ err = 0;
+ goto closed;
+ }
+
+ return;
+ }
+
+#endif
+
#if (NGX_HAVE_KQUEUE)
if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
@@ -3270,12 +3311,19 @@ ngx_http_close_request(ngx_http_request_t *r, ngx_int_t rc)
return;
}
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ ngx_http_spdy_close_stream(r->spdy_stream, rc);
+ return;
+ }
+#endif
+
ngx_http_free_request(r, rc);
ngx_http_close_connection(c);
}
-static void
+void
ngx_http_free_request(ngx_http_request_t *r, ngx_int_t rc)
{
ngx_log_t *log;
@@ -3376,7 +3424,7 @@ ngx_http_log_request(ngx_http_request_t *r)
}
-static void
+void
ngx_http_close_connection(ngx_connection_t *c)
{
ngx_pool_t *pool;
diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index c33f9a945..5c62785e2 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -429,6 +429,9 @@ struct ngx_http_request_s {
ngx_uint_t err_status;
ngx_http_connection_t *http_connection;
+#if (NGX_HTTP_SPDY)
+ ngx_http_spdy_stream_t *spdy_stream;
+#endif
ngx_http_log_handler_pt log_handler;
diff --git a/src/http/ngx_http_request_body.c b/src/http/ngx_http_request_body.c
index e0525cc66..4e7b30257 100644
--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -42,6 +42,13 @@ ngx_http_read_client_request_body(ngx_http_request_t *r,
r->main->count++;
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ rc = ngx_http_spdy_read_request_body(r, post_handler);
+ goto done;
+ }
+#endif
+
if (r->request_body || r->discard_body) {
post_handler(r);
return NGX_OK;
@@ -475,6 +482,13 @@ ngx_http_discard_request_body(ngx_http_request_t *r)
ngx_int_t rc;
ngx_event_t *rev;
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream && r == r->main) {
+ r->spdy_stream->skip_data = NGX_SPDY_DATA_DISCARD;
+ return NGX_OK;
+ }
+#endif
+
if (r != r->main || r->discard_body || r->request_body) {
return NGX_OK;
}
diff --git a/src/http/ngx_http_spdy.c b/src/http/ngx_http_spdy.c
new file mode 100644
index 000000000..0e6fe9281
--- /dev/null
+++ b/src/http/ngx_http_spdy.c
@@ -0,0 +1,2881 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_spdy_module.h>
+
+#include <zlib.h>
+
+
+#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
+ *(uint32_t *) m == (c3 << 24 | c2 << 16 | c1 << 8 | c0) \
+ && m[4] == c4
+
+#else
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
+ m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
+
+#endif
+
+
+#if (NGX_HAVE_NONALIGNED)
+
+#define ngx_spdy_frame_parse_uint16(p) ntohs(*(uint16_t *) (p))
+#define ngx_spdy_frame_parse_uint32(p) ntohl(*(uint32_t *) (p))
+
+#else
+
+#define ngx_spdy_frame_parse_uint16(p) ((p)[0] << 8 | (p)[1])
+#define ngx_spdy_frame_parse_uint32(p) \
+ ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
+
+#endif
+
+#define ngx_spdy_frame_parse_sid(p) \
+ (ngx_spdy_frame_parse_uint32(p) & 0x7fffffff)
+
+
+#define ngx_spdy_ctl_frame_check(h) \
+ (((h) & 0xffffff00) == ngx_spdy_ctl_frame_head(0))
+#define ngx_spdy_data_frame_check(h) \
+ (!((h) & (uint32_t) NGX_SPDY_CTL_BIT << 31))
+
+#define ngx_spdy_ctl_frame_type(h) ((h) & 0x000000ff)
+#define ngx_spdy_frame_flags(p) ((p) >> 24)
+#define ngx_spdy_frame_length(p) ((p) & 0x00ffffff)
+
+
+#define NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE 4096
+#define NGX_SPDY_CTL_FRAME_BUFFER_SIZE 16
+
+#define NGX_SPDY_PROTOCOL_ERROR 1
+#define NGX_SPDY_INVALID_STREAM 2
+#define NGX_SPDY_REFUSED_STREAM 3
+#define NGX_SPDY_UNSUPPORTED_VERSION 4
+#define NGX_SPDY_CANCEL 5
+#define NGX_SPDY_INTERNAL_ERROR 6
+#define NGX_SPDY_FLOW_CONTROL_ERROR 7
+
+#define NGX_SPDY_SETTINGS_MAX_STREAMS 4
+
+#define NGX_SPDY_SETTINGS_FLAG_PERSIST 0x01
+
+typedef struct {
+ ngx_uint_t hash;
+ u_char len;
+ u_char header[7];
+ ngx_int_t (*handler)(ngx_http_request_t *r);
+} ngx_http_spdy_request_header_t;
+
+
+static void ngx_http_spdy_read_handler(ngx_event_t *rev);
+static void ngx_http_spdy_write_handler(ngx_event_t *wev);
+static void ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc);
+
+static u_char *ngx_http_spdy_state_detect_settings(
+ ngx_http_spdy_connection_t *sc, u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_noop(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler);
+static u_char *ngx_http_spdy_state_protocol_error(
+ ngx_http_spdy_connection_t *sc);
+static u_char *ngx_http_spdy_state_internal_error(
+ ngx_http_spdy_connection_t *sc);
+
+static ngx_int_t ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc,
+ ngx_uint_t sid, ngx_uint_t status, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc);
+static ngx_int_t ngx_http_spdy_settings_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_http_spdy_out_frame_t *ngx_http_spdy_get_ctl_frame(
+ ngx_http_spdy_connection_t *sc, size_t size, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_ctl_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+
+static ngx_http_spdy_stream_t *ngx_http_spdy_create_stream(
+ ngx_http_spdy_connection_t *sc, ngx_uint_t id, ngx_uint_t priority);
+static ngx_http_spdy_stream_t *ngx_http_spdy_get_stream_by_id(
+ ngx_http_spdy_connection_t *sc, ngx_uint_t sid);
+#define ngx_http_spdy_streams_index_size(sscf) (sscf->streams_index_mask + 1)
+#define ngx_http_spdy_stream_index(sscf, sid) \
+ ((sid >> 1) & sscf->streams_index_mask)
+
+static ngx_int_t ngx_http_spdy_parse_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_handle_request_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_method(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_scheme(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_url(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_version(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_construct_request_line(ngx_http_request_t *r);
+static void ngx_http_spdy_run_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_init_request_body(ngx_http_request_t *r);
+
+static void ngx_http_spdy_handle_connection_handler(ngx_event_t *rev);
+static void ngx_http_spdy_keepalive_handler(ngx_event_t *rev);
+static void ngx_http_spdy_finalize_connection(ngx_http_spdy_connection_t *sc,
+ ngx_int_t rc);
+
+static void ngx_http_spdy_pool_cleanup(void *data);
+
+static void *ngx_http_spdy_zalloc(void *opaque, u_int items, u_int size);
+static void ngx_http_spdy_zfree(void *opaque, void *address);
+
+
+static const u_char ngx_http_spdy_dict[] =
+ "options" "get" "head" "post" "put" "delete" "trace"
+ "accept" "accept-charset" "accept-encoding" "accept-language"
+ "authorization" "expect" "from" "host"
+ "if-modified-since" "if-match" "if-none-match" "if-range"
+ "if-unmodifiedsince" "max-forwards" "proxy-authorization"
+ "range" "referer" "te" "user-agent"
+ "100" "101" "200" "201" "202" "203" "204" "205" "206"
+ "300" "301" "302" "303" "304" "305" "306" "307"
+ "400" "401" "402" "403" "404" "405" "406" "407" "408" "409" "410"
+ "411" "412" "413" "414" "415" "416" "417"
+ "500" "501" "502" "503" "504" "505"
+ "accept-ranges" "age" "etag" "location" "proxy-authenticate" "public"
+ "retry-after" "server" "vary" "warning" "www-authenticate" "allow"
+ "content-base" "content-encoding" "cache-control" "connection" "date"
+ "trailer" "transfer-encoding" "upgrade" "via" "warning"
+ "content-language" "content-length" "content-location"
+ "content-md5" "content-range" "content-type" "etag" "expires"
+ "last-modified" "set-cookie"
+ "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" "Sunday"
+ "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"
+ "chunked" "text/html" "image/png" "image/jpg" "image/gif"
+ "application/xml" "application/xhtml" "text/plain" "public" "max-age"
+ "charset=iso-8859-1" "utf-8" "gzip" "deflate" "HTTP/1.1" "status"
+ "version" "url";
+
+
+static ngx_http_spdy_request_header_t ngx_http_spdy_request_headers[] = {
+ { 0, 6, "method", ngx_http_spdy_parse_method },
+ { 0, 6, "scheme", ngx_http_spdy_parse_scheme },
+ { 0, 3, "url", ngx_http_spdy_parse_url },
+ { 0, 7, "version", ngx_http_spdy_parse_version },
+};
+
+#define NGX_SPDY_REQUEST_HEADERS \
+ (sizeof(ngx_http_spdy_request_headers) \
+ / sizeof(ngx_http_spdy_request_header_t))
+
+
+void
+ngx_http_spdy_init(ngx_event_t *rev)
+{
+ int rc;
+ ngx_connection_t *c;
+ ngx_pool_cleanup_t *cln;
+ ngx_http_connection_t *hc;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_main_conf_t *smcf;
+ ngx_http_spdy_connection_t *sc;
+
+ c = rev->data;
+ hc = c->data;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "init spdy request");
+
+ c->log->action = "processing SPDY";
+
+ smcf = ngx_http_get_module_main_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+ if (smcf->recv_buffer == NULL) {
+ smcf->recv_buffer = ngx_palloc(ngx_cycle->pool, smcf->recv_buffer_size);
+ if (smcf->recv_buffer == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+ }
+
+ sc = ngx_pcalloc(c->pool, sizeof(ngx_http_spdy_connection_t));
+ if (sc == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->connection = c;
+ sc->http_connection = hc;
+
+ sc->handler = ngx_http_spdy_state_detect_settings;
+
+ sc->zstream_in.zalloc = ngx_http_spdy_zalloc;
+ sc->zstream_in.zfree = ngx_http_spdy_zfree;
+ sc->zstream_in.opaque = sc;
+
+ rc = inflateInit(&sc->zstream_in);
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "inflateInit() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->zstream_out.zalloc = ngx_http_spdy_zalloc;
+ sc->zstream_out.zfree = ngx_http_spdy_zfree;
+ sc->zstream_out.opaque = sc;
+
+ sscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+ rc = deflateInit2(&sc->zstream_out, (int) sscf->headers_comp,
+ Z_DEFLATED, 11, 4, Z_DEFAULT_STRATEGY);
+
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "deflateInit2() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ rc = deflateSetDictionary(&sc->zstream_out, ngx_http_spdy_dict,
+ sizeof(ngx_http_spdy_dict));
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "deflateSetDictionary() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->pool = ngx_create_pool(sscf->pool_size, sc->connection->log);
+ if (sc->pool == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_pool_cleanup_file_t));
+ if (cln == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ cln->handler = ngx_http_spdy_pool_cleanup;
+ cln->data = sc;
+
+ sc->streams_index = ngx_pcalloc(sc->pool,
+ ngx_http_spdy_streams_index_size(sscf)
+ * sizeof(ngx_http_spdy_stream_t *));
+ if (sc->streams_index == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ c->data = sc;
+
+ rev->handler = ngx_http_spdy_read_handler;
+ c->write->handler = ngx_http_spdy_write_handler;
+
+ ngx_http_spdy_read_handler(rev);
+}
+
+
+static void
+ngx_http_spdy_read_handler(ngx_event_t *rev)
+{
+ u_char *p, *end;
+ size_t available;
+ ssize_t n;
+ ngx_connection_t *c;
+ ngx_http_spdy_main_conf_t *smcf;
+ ngx_http_spdy_connection_t *sc;
+
+ c = rev->data;
+ sc = c->data;
+
+ if (rev->timedout) {
+ ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_REQUEST_TIME_OUT);
+ return;
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy read handler");
+
+ sc->blocked = 1;
+
+ smcf = ngx_http_get_module_main_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ available = smcf->recv_buffer_size - 2 * NGX_SPDY_STATE_BUFFER_SIZE;
+
+ do {
+ p = smcf->recv_buffer;
+
+ ngx_memcpy(p, sc->buffer, NGX_SPDY_STATE_BUFFER_SIZE);
+ end = p + sc->buffer_used;
+
+ n = c->recv(c, end, available);
+
+ if (n == NGX_AGAIN) {
+ break;
+ }
+
+ if (n == 0 && (sc->waiting || sc->processing)) {
+ ngx_log_error(NGX_LOG_INFO, c->log, 0,
+ "client closed prematurely connection");
+ }
+
+ if (n == 0 || n == NGX_ERROR) {
+ ngx_http_spdy_finalize_connection(sc,
+ NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ end += n;
+
+ sc->buffer_used = 0;
+ sc->waiting = 0;
+
+ do {
+ p = sc->handler(sc, p, end);
+
+ if (p == NULL) {
+ return;
+ }
+
+ } while (p != end);
+
+ } while (rev->ready);
+
+ if (ngx_handle_read_event(rev, 0) != NGX_OK) {
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return;
+ }
+
+ sc->blocked = 0;
+
+ if (sc->processing) {
+ if (rev->timer_set) {
+ ngx_del_timer(rev);
+ }
+ return;
+ }
+
+ ngx_http_spdy_handle_connection(sc);
+}
+
+
+static void
+ngx_http_spdy_write_handler(ngx_event_t *wev)
+{
+ ngx_int_t rc;
+ ngx_connection_t *c;
+ ngx_http_spdy_stream_t *stream, *s, *sn;
+ ngx_http_spdy_connection_t *sc;
+
+ c = wev->data;
+ sc = c->data;
+
+ if (wev->timedout) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy write event timed out");
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy write handler");
+
+ sc->blocked = 2;
+
+ rc = ngx_http_spdy_send_output_queue(sc);
+
+ if (rc == NGX_ERROR) {
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ stream = NULL;
+
+ for (s = sc->last_stream; s; s = sn) {
+ sn = s->next;
+ s->next = stream;
+ stream = s;
+ }
+
+ sc->last_stream = NULL;
+
+ sc->blocked = 1;
+
+ for ( /* void */ ; stream; stream = sn) {
+ sn = stream->next;
+ stream->handled = 0;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy run stream %ui", stream->id);
+
+ wev = stream->request->connection->write;
+ wev->handler(wev);
+ }
+
+ sc->blocked = 0;
+
+ if (rc == NGX_AGAIN) {
+ return;
+ }
+
+ ngx_http_spdy_handle_connection(sc);
+}
+
+
+ngx_int_t
+ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc)
+{
+ ngx_chain_t *cl;
+ ngx_event_t *wev;
+ ngx_connection_t *c;
+ ngx_http_core_loc_conf_t *clcf;
+ ngx_http_spdy_out_frame_t *out, *frame, *fn;
+
+ c = sc->connection;
+
+ if (c->error) {
+ return NGX_ERROR;
+ }
+
+ wev = c->write;
+
+ if (!wev->ready) {
+ return NGX_OK;
+ }
+
+ cl = NULL;
+ out = NULL;
+
+ for (frame = sc->last_out; frame; frame = fn) {
+ frame->last->next = cl;
+ cl = frame->first;
+
+ fn = frame->next;
+ frame->next = out;
+ out = frame;
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy frame out: %p sid:%ui prio:%ui bl:%ui size:%uz",
+ out, out->stream ? out->stream->id : 0, out->priority,
+ out->blocked, out->size);
+ }
+
+ cl = c->send_chain(c, cl, 0);
+
+ if (cl == NGX_CHAIN_ERROR) {
+ c->error = 1;
+
+ if (!sc->blocked) {
+ ngx_post_event(wev, &ngx_posted_events);
+ }
+
+ return NGX_ERROR;
+ }
+
+ clcf = ngx_http_get_module_loc_conf(sc->http_connection->conf_ctx,
+ ngx_http_core_module);
+
+ if (ngx_handle_write_event(wev, clcf->send_lowat) != NGX_OK) {
+ return NGX_ERROR; /* FIXME */
+ }
+
+ if (cl) {
+ ngx_add_timer(wev, clcf->send_timeout);
+
+ } else {
+ if (wev->timer_set) {
+ ngx_del_timer(wev);
+ }
+ }
+
+ for ( /* void */ ; out; out = out->next) {
+ if (out->handler(sc, out) != NGX_OK) {
+ out->blocked = 1;
+ out->priority = NGX_SPDY_HIGHEST_PRIORITY;
+ break;
+ }
+
+ ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy frame sent: %p sid:%ui bl:%ui size:%uz",
+ out, out->stream ? out->stream->id : 0,
+ out->blocked, out->size);
+ }
+
+ frame = NULL;
+
+ for ( /* void */ ; out; out = fn) {
+ fn = out->next;
+ out->next = frame;
+ frame = out;
+ }
+
+ sc->last_out = frame;
+
+ return NGX_OK;
+}
+
+
+static void
+ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc)
+{
+ ngx_connection_t *c;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ if (sc->last_out || sc->processing) {
+ return;
+ }
+
+ c = sc->connection;
+
+ if (c->error) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ if (c->buffered) {
+ return;
+ }
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+ if (sc->waiting) {
+ ngx_add_timer(c->read, sscf->recv_timeout);
+ return;
+ }
+
+ if (ngx_terminate || ngx_exiting) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ ngx_destroy_pool(sc->pool);
+
+ sc->pool = NULL;
+ sc->free_ctl_frames = NULL;
+ sc->free_fake_connections = NULL;
+
+#if (NGX_HTTP_SSL)
+ if (c->ssl) {
+ ngx_ssl_free_buffer(c);
+ }
+#endif
+
+ c->destroyed = 1;
+ c->idle = 1;
+ ngx_reusable_connection(c, 1);
+
+ c->write->handler = ngx_http_empty_handler;
+ c->read->handler = ngx_http_spdy_keepalive_handler;
+
+ if (c->write->timer_set) {
+ ngx_del_timer(c->write);
+ }
+
+ ngx_add_timer(c->read, sscf->keepalive_timeout);
+}
+
+
+static u_char *
+ngx_http_spdy_state_detect_settings(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end)
+{
+ if (end - pos < NGX_SPDY_FRAME_HEADER_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_detect_settings);
+ }
+
+ /*
+ * Since this is the first frame in a buffer,
+ * then it is properly aligned
+ */
+
+ if (*(uint32_t *) pos == htonl(ngx_spdy_ctl_frame_head(NGX_SPDY_SETTINGS)))
+ {
+ sc->length = ngx_spdy_frame_length(htonl(((uint32_t *) pos)[1]));
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SETTINGS frame received, size: %uz", sc->length);
+
+ pos += NGX_SPDY_FRAME_HEADER_SIZE;
+
+ return ngx_http_spdy_state_settings(sc, pos, end);
+ }
+
+ ngx_http_spdy_send_settings(sc);
+
+ return ngx_http_spdy_state_head(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ uint32_t head, flen;
+
+ if (end - pos < NGX_SPDY_FRAME_HEADER_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_head);
+ }
+
+ head = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += sizeof(uint32_t);
+
+ flen = ngx_spdy_frame_parse_uint32(pos);
+
+ sc->flags = ngx_spdy_frame_flags(flen);
+ sc->length = ngx_spdy_frame_length(flen);
+
+ pos += sizeof(uint32_t);
+
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy process frame head:%08Xd f:%ui l:%ui",
+ head, sc->flags, sc->length);
+
+ if (ngx_spdy_ctl_frame_check(head)) {
+ switch (ngx_spdy_ctl_frame_type(head)) {
+
+ case NGX_SPDY_SYN_STREAM:
+ return ngx_http_spdy_state_syn_stream(sc, pos, end);
+
+ case NGX_SPDY_SYN_REPLY:
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ case NGX_SPDY_RST_STREAM:
+ return ngx_http_spdy_state_rst_stream(sc, pos, end);
+
+ case NGX_SPDY_SETTINGS:
+ return ngx_http_spdy_state_skip(sc, pos, end);
+
+ case NGX_SPDY_NOOP:
+ return ngx_http_spdy_state_noop(sc, pos, end);
+
+ case NGX_SPDY_PING:
+ return ngx_http_spdy_state_ping(sc, pos, end);
+
+ case NGX_SPDY_GOAWAY:
+ return ngx_http_spdy_state_skip(sc, pos, end); /* TODO */
+
+ case NGX_SPDY_HEADERS:
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ default: /* TODO logging */
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+ }
+
+ if (ngx_spdy_data_frame_check(head)) {
+ sc->stream = ngx_http_spdy_get_stream_by_id(sc, head);
+ return ngx_http_spdy_state_data(sc, pos, end);
+ }
+
+
+ /* TODO version & type check */
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy unknown frame");
+
+ return ngx_http_spdy_state_protocol_error(sc);
+}
+
+
+static u_char *
+ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t sid, prio;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ if (end - pos < NGX_SPDY_SYN_STREAM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_syn_stream);
+ }
+
+ if (sc->length <= NGX_SPDY_SYN_STREAM_SIZE) {
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sc->length -= NGX_SPDY_SYN_STREAM_SIZE;
+
+ sid = ngx_spdy_frame_parse_sid(pos);
+ prio = pos[8] >> 6;
+
+ pos += NGX_SPDY_SYN_STREAM_SIZE;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SYN_STREAM frame sid:%ui prio:%ui", sid, prio);
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ if (sc->processing >= sscf->concurrent_streams) {
+
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "spdy concurrent streams excessed %ui", sc->processing);
+
+ if (ngx_http_spdy_send_rst_stream(sc, sid, NGX_SPDY_REFUSED_STREAM,
+ prio)
+ != NGX_OK)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ stream = ngx_http_spdy_create_stream(sc, sid, prio);
+ if (stream == NULL) {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ stream->in_closed = (sc->flags & NGX_SPDY_FLAG_FIN) ? 1 : 0;
+
+ stream->request->request_length = NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SYN_STREAM_SIZE
+ + sc->length;
+
+ sc->stream = stream;
+
+ sc->last_sid = sid;
+
+ return ngx_http_spdy_state_headers(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ int z;
+ size_t size;
+ ngx_buf_t *buf;
+ ngx_int_t rc;
+ ngx_uint_t complete;
+ ngx_http_request_t *r;
+
+ size = end - pos;
+
+ if (size == 0) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ if (size >= sc->length) {
+ size = sc->length;
+ complete = 1;
+
+ } else {
+ complete = 0;
+ }
+
+ r = sc->stream->request;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy process HEADERS %uz of %uz", size, sc->length);
+
+ buf = r->header_in;
+
+ sc->zstream_in.next_in = pos;
+ sc->zstream_in.avail_in = size;
+ sc->zstream_in.next_out = buf->last;
+ sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+ z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ if (z == Z_NEED_DICT) {
+ z = inflateSetDictionary(&sc->zstream_in, ngx_http_spdy_dict,
+ sizeof(ngx_http_spdy_dict));
+ if (z != Z_OK) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "spdy inflateSetDictionary() failed: %d", z);
+ ngx_http_spdy_close_stream(sc->stream, 0);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy inflateSetDictionary(): %d", z);
+
+ z = sc->zstream_in.avail_in ? inflate(&sc->zstream_in, Z_NO_FLUSH)
+ : Z_OK;
+ }
+
+ if (z != Z_OK) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "spdy inflate() failed: %d", z);
+ ngx_http_spdy_close_stream(sc->stream, 0);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy inflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ sc->zstream_in.next_in, sc->zstream_in.next_out,
+ sc->zstream_in.avail_in, sc->zstream_in.avail_out,
+ z);
+
+ sc->length -= sc->zstream_in.next_in - pos;
+ pos = sc->zstream_in.next_in;
+
+ buf->last = sc->zstream_in.next_out;
+
+ if (r->headers_in.headers.part.elts == NULL) {
+
+ if (buf->last - buf->pos < NGX_SPDY_NV_NUM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ sc->headers = ngx_spdy_frame_parse_uint16(buf->pos);
+
+ buf->pos += NGX_SPDY_NV_NUM_SIZE;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy headers count: %ui", sc->headers);
+
+ if (ngx_list_init(&r->headers_in.headers, r->pool, sc->headers + 3,
+ sizeof(ngx_table_elt_t))
+ != NGX_OK)
+ {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ if (ngx_array_init(&r->headers_in.cookies, r->pool, 2,
+ sizeof(ngx_table_elt_t *))
+ != NGX_OK)
+ {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+ }
+
+ while (sc->headers) {
+
+ rc = ngx_http_spdy_parse_header(r);
+
+ switch (rc) {
+
+ case NGX_DONE:
+ sc->headers--;
+
+ case NGX_OK:
+ break;
+
+ case NGX_AGAIN:
+
+ if (sc->zstream_in.avail_in) {
+
+ rc = ngx_http_spdy_alloc_large_header_buffer(r);
+
+ if (rc == NGX_DECLINED) {
+ /* TODO logging */
+ ngx_http_finalize_request(r,
+ NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ if (rc != NGX_OK) {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ buf = r->header_in;
+
+ sc->zstream_in.next_out = buf->last;
+ sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+ z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ if (z != Z_OK) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "spdy inflate() failed: %d", z);
+ ngx_http_spdy_close_stream(sc->stream, 0);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sc->length -= sc->zstream_in.next_in - pos;
+ pos = sc->zstream_in.next_in;
+
+ buf->last = sc->zstream_in.next_out;
+
+ continue;
+ }
+
+ if (complete) {
+ /* TODO: improve error message */
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy again while last chunk");
+ ngx_http_spdy_close_stream(sc->stream, 0);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+
+ case NGX_HTTP_PARSE_INVALID_REQUEST:
+
+ /* TODO: improve error message */
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid header line");
+
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+
+ default: /* NGX_HTTP_PARSE_INVALID_HEADER */
+
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid HEADERS spdy frame");
+ ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ /* a header line has been parsed successfully */
+
+ rc = ngx_http_spdy_handle_request_header(r);
+
+ if (rc != NGX_OK) {
+ if (rc == NGX_HTTP_PARSE_INVALID_HEADER) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid HEADERS spdy frame");
+ ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ if (rc == NGX_HTTP_PARSE_INVALID_REQUEST) {
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ }
+
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+ }
+
+ if (buf->pos != buf->last) {
+ /* TODO: improve error message */
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "end %ui %p %p", complete, buf->pos, buf->last);
+ ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ if (!complete) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ ngx_http_spdy_run_request(r);
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ if (sc->connection->error) {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ int n;
+ size_t size;
+ u_char buffer[NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE];
+
+ if (sc->length == 0) {
+ return ngx_http_spdy_state_complete(sc, pos, end);
+ }
+
+ size = end - pos;
+
+ if (size == 0) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers_skip);
+ }
+
+ sc->zstream_in.next_in = pos;
+ sc->zstream_in.avail_in = (size < sc->length) ? size : sc->length;
+
+ while (sc->zstream_in.avail_in) {
+ sc->zstream_in.next_out = buffer;
+ sc->zstream_in.avail_out = NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE;
+
+ n = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy inflate(): %d", n);
+
+ if (n != Z_OK) {
+ /* TODO: logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+ }
+
+ pos = sc->zstream_in.next_in;
+
+ if (size < sc->length) {
+ sc->length -= size;
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers_skip);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ size_t size;
+ ssize_t n;
+ ngx_buf_t *buf;
+ ngx_int_t rc;
+ ngx_uint_t complete;
+ ngx_temp_file_t *tf;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_request_body_t *rb;
+ ngx_http_core_loc_conf_t *clcf;
+
+ stream = sc->stream;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy DATA frame");
+
+ if (stream == NULL) {
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ if (stream->in_closed) {
+ /* TODO log */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ if (stream->skip_data) {
+
+ if (sc->flags & NGX_SPDY_FLAG_FIN) {
+ stream->in_closed = 1;
+ }
+
+ /* TODO log and accounting */
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ size = end - pos;
+
+ if (size >= sc->length) {
+ size = sc->length;
+ complete = 1;
+
+ } else {
+ sc->length -= size;
+ complete = 0;
+ }
+
+ r = stream->request;
+
+ if (r->request_body == NULL
+ && ngx_http_spdy_init_request_body(r) != NGX_OK)
+ {
+ stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ rb = r->request_body;
+ tf = rb->temp_file;
+ buf = rb->buf;
+
+ if (size) {
+ rb->rest += size;
+
+ if (r->headers_in.content_length_n != -1
+ && r->headers_in.content_length_n < rb->rest)
+ {
+ /* TODO logging */
+ stream->skip_data = NGX_SPDY_DATA_ERROR;
+ goto error;
+
+ } else {
+ clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+ if (clcf->client_max_body_size
+ && clcf->client_max_body_size < rb->rest)
+ {
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+ "client intended to send too large chunked "
+ "body: %O bytes",
+ rb->rest);
+
+ stream->skip_data = NGX_SPDY_DATA_ERROR;
+ goto error;
+ }
+ }
+
+ if (tf) {
+ buf->start = pos;
+ buf->pos = pos;
+
+ pos += size;
+
+ buf->end = pos;
+ buf->last = pos;
+
+ n = ngx_write_chain_to_temp_file(tf, rb->bufs);
+
+ /* TODO: n == 0 or not complete and level event */
+
+ if (n == NGX_ERROR) {
+ stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+ goto error;
+ }
+
+ tf->offset += n;
+
+ } else {
+ buf->last = ngx_cpymem(buf->last, pos, size);
+ pos += size;
+ }
+
+ r->request_length += size;
+ }
+
+ if (!complete) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_data);
+ }
+
+ if (sc->flags & NGX_SPDY_FLAG_FIN) {
+
+ stream->in_closed = 1;
+
+ if (tf) {
+ ngx_memzero(buf, sizeof(ngx_buf_t));
+
+ buf->in_file = 1;
+ buf->file_last = tf->file.offset;
+ buf->file = &tf->file;
+
+ rb->buf = NULL;
+ }
+
+ if (r->headers_in.content_length_n < 0) {
+ r->headers_in.content_length_n = rb->rest;
+ }
+
+ if (rb->post_handler) {
+ rb->post_handler(r);
+ }
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+
+error:
+
+ if (rb->post_handler) {
+
+ if (stream->skip_data == NGX_SPDY_DATA_ERROR) {
+ rc = (r->headers_in.content_length_n == -1)
+ ? NGX_HTTP_REQUEST_ENTITY_TOO_LARGE
+ : NGX_HTTP_BAD_REQUEST;
+
+ } else {
+ rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ ngx_http_finalize_request(r, rc);
+ }
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t sid, status;
+ ngx_event_t *ev;
+ ngx_connection_t *fc;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+
+ if (end - pos < NGX_SPDY_RST_STREAM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_rst_stream);
+ }
+
+ if (sc->length != NGX_SPDY_RST_STREAM_SIZE) {
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sid = ngx_spdy_frame_parse_sid(pos);
+
+ pos += NGX_SPDY_SID_SIZE;
+
+ status = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += sizeof(uint32_t);
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy RST_STREAM sid:%ui st:%ui", sid, status);
+
+
+ switch (status) {
+
+ case NGX_SPDY_PROTOCOL_ERROR:
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ case NGX_SPDY_INVALID_STREAM:
+ /* TODO */
+ break;
+
+ case NGX_SPDY_REFUSED_STREAM:
+ /* TODO */
+ break;
+
+ case NGX_SPDY_UNSUPPORTED_VERSION:
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ case NGX_SPDY_CANCEL:
+ case NGX_SPDY_INTERNAL_ERROR:
+ stream = ngx_http_spdy_get_stream_by_id(sc, sid);
+ if (stream == NULL) {
+ /* TODO false cancel */
+ break;
+ }
+
+ stream->in_closed = 1;
+ stream->out_closed = 1;
+
+ r = stream->request;
+
+ fc = r->connection;
+ fc->error = 1;
+
+ ev = fc->read;
+ ev->handler(ev);
+
+ break;
+
+ case NGX_SPDY_FLOW_CONTROL_ERROR:
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ default:
+ /* TODO */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ if (end - pos < NGX_SPDY_PING_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_ping);
+ }
+
+ if (sc->length != NGX_SPDY_PING_SIZE) {
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy PING frame");
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_PING_SIZE,
+ NGX_SPDY_HIGHEST_PRIORITY);
+ if (frame == NULL) {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_PING);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_PING_SIZE);
+
+ p = ngx_cpymem(p, pos, NGX_SPDY_PING_SIZE);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ pos += NGX_SPDY_PING_SIZE;
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ size_t size;
+
+ size = end - pos;
+
+ if (size < sc->length) {
+ sc->length -= size;
+ return ngx_http_spdy_state_save(sc, end, end,
+ ngx_http_spdy_state_skip);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos + sc->length, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t v;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ if (sc->headers == 0) {
+
+ if (end - pos < NGX_SPDY_SETTINGS_NUM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_settings);
+ }
+
+ sc->headers = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += NGX_SPDY_SETTINGS_NUM_SIZE;
+ sc->length -= NGX_SPDY_SETTINGS_NUM_SIZE;
+
+ if (sc->length < sc->headers * NGX_SPDY_SETTINGS_PAIR_SIZE) {
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SETTINGS frame consists of %ui entries",
+ sc->headers);
+ }
+
+ while (sc->headers) {
+ if (end - pos < NGX_SPDY_SETTINGS_PAIR_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_settings);
+ }
+
+ sc->headers--;
+
+ if (pos[0] != NGX_SPDY_SETTINGS_MAX_STREAMS) {
+ pos += NGX_SPDY_SETTINGS_PAIR_SIZE;
+ sc->length -= NGX_SPDY_SETTINGS_PAIR_SIZE;
+ continue;
+ }
+
+ v = ngx_spdy_frame_parse_uint32(pos + NGX_SPDY_SETTINGS_IDF_SIZE);
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ if (v != sscf->concurrent_streams) {
+ ngx_http_spdy_send_settings(sc);
+ }
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ ngx_http_spdy_send_settings(sc);
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_noop(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ if (sc->length) {
+ /* TODO logging */
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ sc->handler = ngx_http_spdy_state_head;
+ return pos;
+}
+
+
+static u_char *
+ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler)
+{
+#if (NGX_DEBUG)
+ if (end - pos > NGX_SPDY_STATE_BUFFER_SIZE) {
+ ngx_log_error(NGX_LOG_ALERT, sc->connection->log, 0,
+ "spdy state buffer overflow: "
+ "%i bytes required", end - pos);
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+#endif
+
+ ngx_memcpy(sc->buffer, pos, NGX_SPDY_STATE_BUFFER_SIZE);
+
+ sc->buffer_used = end - pos;
+ sc->handler = handler;
+ sc->waiting = 1;
+
+ return end;
+}
+
+
+static u_char *
+ngx_http_spdy_state_protocol_error(ngx_http_spdy_connection_t *sc)
+{
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy state protocol error");
+
+ /* TODO */
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return NULL;
+}
+
+
+static u_char *
+ngx_http_spdy_state_internal_error(ngx_http_spdy_connection_t *sc)
+{
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy state internal error");
+
+ /* TODO */
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t sid,
+ ngx_uint_t status, ngx_uint_t priority)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ if (sc->connection->error) {
+ return NGX_OK;
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy write RST_STREAM sid:%ui st:%ui", sid, status);
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_RST_STREAM_SIZE,
+ priority);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_RST_STREAM);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_RST_STREAM_SIZE);
+
+ p = ngx_spdy_frame_write_sid(p, sid);
+ p = ngx_spdy_frame_aligned_write_uint32(p, status);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+
+
+#if 0
+static ngx_int_t
+ngx_http_spdy_send_goaway(ngx_http_spdy_connection_t *sc)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy create GOAWAY sid:%ui", sc->last_sid);
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_GOAWAY_SIZE,
+ NGX_SPDY_HIGHEST_PRIORITY);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_GOAWAY);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_GOAWAY_SIZE);
+
+ p = ngx_spdy_frame_write_sid(p, sc->last_sid);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+#endif
+
+
+static ngx_int_t
+ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_pool_t *pool;
+ ngx_chain_t *cl;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy create SETTINGS frame");
+
+ pool = sc->connection->pool;
+
+ frame = ngx_palloc(pool, sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ cl = ngx_alloc_chain_link(pool);
+ if (cl == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = ngx_create_temp_buf(pool, NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SETTINGS_NUM_SIZE
+ + NGX_SPDY_SETTINGS_PAIR_SIZE);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf->last_buf = 1;
+
+ cl->buf = buf;
+ cl->next = NULL;
+
+ frame->first = cl;
+ frame->last = cl;
+ frame->handler = ngx_http_spdy_settings_frame_handler;
+#if (NGX_DEBUG)
+ frame->stream = NULL;
+ frame->size = NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SETTINGS_NUM_SIZE
+ + NGX_SPDY_SETTINGS_PAIR_SIZE;
+#endif
+ frame->priority = NGX_SPDY_HIGHEST_PRIORITY;
+ frame->blocked = 0;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_SETTINGS);
+ p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_CLEAR_SETTINGS,
+ NGX_SPDY_SETTINGS_NUM_SIZE
+ + NGX_SPDY_SETTINGS_PAIR_SIZE);
+
+ p = ngx_spdy_frame_aligned_write_uint32(p, 1);
+ p = ngx_spdy_frame_aligned_write_uint32(p,
+ NGX_SPDY_SETTINGS_MAX_STREAMS << 24
+ | NGX_SPDY_SETTINGS_FLAG_PERSIST);
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ p = ngx_spdy_frame_aligned_write_uint32(p, sscf->concurrent_streams);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_spdy_settings_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_buf_t *buf;
+
+ buf = frame->first->buf;
+
+ if (buf->pos != buf->last) {
+ return NGX_AGAIN;
+ }
+
+ ngx_free_chain(sc->pool, frame->first);
+
+ return NGX_OK;
+}
+
+
+static ngx_http_spdy_out_frame_t *
+ngx_http_spdy_get_ctl_frame(ngx_http_spdy_connection_t *sc, size_t size,
+ ngx_uint_t priority)
+{
+ ngx_chain_t *cl;
+ ngx_http_spdy_out_frame_t *frame;
+
+ frame = sc->free_ctl_frames;
+
+ if (frame) {
+ sc->free_ctl_frames = frame->free;
+
+ cl = frame->first;
+ cl->buf->pos = cl->buf->start;
+
+ } else {
+ frame = ngx_palloc(sc->pool, sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NULL;
+ }
+
+ cl = ngx_alloc_chain_link(sc->pool);
+ if (cl == NULL) {
+ return NULL;
+ }
+
+ cl->buf = ngx_create_temp_buf(sc->pool,
+ NGX_SPDY_CTL_FRAME_BUFFER_SIZE);
+ if (cl->buf == NULL) {
+ return NULL;
+ }
+
+ cl->buf->last_buf = 1;
+
+ frame->first = cl;
+ frame->last = cl;
+ frame->handler = ngx_http_spdy_ctl_frame_handler;
+ }
+
+ frame->free = NULL;
+
+#if (NGX_DEBUG)
+ if (size > NGX_SPDY_CTL_FRAME_BUFFER_SIZE - NGX_SPDY_FRAME_HEADER_SIZE) {
+ ngx_log_error(NGX_LOG_ALERT, sc->pool->log, 0,
+ "requested control frame is too big: %z", size);
+ return NULL;
+ }
+
+ frame->stream = NULL;
+ frame->size = size;
+#endif
+
+ frame->priority = priority;
+ frame->blocked = 0;
+
+ return frame;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_ctl_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_buf_t *buf;
+
+ buf = frame->first->buf;
+
+ if (buf->pos != buf->last) {
+ return NGX_AGAIN;
+ }
+
+ frame->free = sc->free_ctl_frames;
+ sc->free_ctl_frames = frame;
+
+ return NGX_OK;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_create_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t id,
+ ngx_uint_t priority)
+{
+ ngx_log_t *log;
+ ngx_uint_t index;
+ ngx_event_t *rev, *wev;
+ ngx_connection_t *fc;
+ ngx_http_log_ctx_t *ctx;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_core_srv_conf_t *cscf;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ fc = sc->free_fake_connections;
+
+ if (fc) {
+ sc->free_fake_connections = fc->data;
+
+ rev = fc->read;
+ wev = fc->write;
+ log = fc->log;
+ ctx = log->data;
+
+ } else {
+ fc = ngx_palloc(sc->pool, sizeof(ngx_connection_t));
+ if (fc == NULL) {
+ return NULL;
+ }
+
+ rev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+ if (rev == NULL) {
+ return NULL;
+ }
+
+ wev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+ if (wev == NULL) {
+ return NULL;
+ }
+
+ log = ngx_palloc(sc->pool, sizeof(ngx_log_t));
+ if (log == NULL) {
+ return NULL;
+ }
+
+ ctx = ngx_palloc(sc->pool, sizeof(ngx_http_log_ctx_t));
+ if (ctx == NULL) {
+ return NULL;
+ }
+
+ ctx->connection = fc;
+ ctx->request = NULL;
+ }
+
+ ngx_memcpy(log, sc->connection->log, sizeof(ngx_log_t));
+
+ log->data = ctx;
+
+ ngx_memzero(rev, sizeof(ngx_event_t));
+
+ rev->data = fc;
+ rev->ready = 1;
+ rev->handler = ngx_http_empty_handler;
+ rev->log = log;
+
+ ngx_memcpy(wev, rev, sizeof(ngx_event_t));
+
+ wev->write = 1;
+
+ ngx_memcpy(fc, sc->connection, sizeof(ngx_connection_t));
+
+ fc->data = sc->http_connection;
+ fc->read = rev;
+ fc->write = wev;
+ fc->sent = 0;
+ fc->log = log;
+ fc->buffered = 0;
+ fc->sndlowat = 1;
+
+ r = ngx_http_create_request(fc);
+ if (r == NULL) {
+ return NULL;
+ }
+
+ r->valid_location = 1;
+
+ fc->data = r;
+ sc->connection->requests++;
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ r->header_in = ngx_create_temp_buf(r->pool,
+ cscf->client_header_buffer_size);
+ if (r->header_in == NULL) {
+ ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NULL;
+ }
+
+ r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
+
+ stream = ngx_pcalloc(r->pool, sizeof(ngx_http_spdy_stream_t));
+ if (stream == NULL) {
+ ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NULL;
+ }
+
+ r->spdy_stream = stream;
+
+ stream->id = id;
+ stream->request = r;
+ stream->connection = sc;
+ stream->priority = priority;
+
+ sscf = ngx_http_get_module_srv_conf(r, ngx_http_spdy_module);
+
+ index = ngx_http_spdy_stream_index(sscf, id);
+
+ stream->index = sc->streams_index[index];
+ sc->streams_index[index] = stream;
+
+ sc->processing++;
+
+ return stream;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_get_stream_by_id(ngx_http_spdy_connection_t *sc,
+ ngx_uint_t sid)
+{
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ stream = sc->streams_index[ngx_http_spdy_stream_index(sscf, sid)];
+
+ while (stream) {
+ if (stream->id == sid) {
+ return stream;
+ }
+
+ stream = stream->index;
+ }
+
+ return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_header(ngx_http_request_t *r)
+{
+ u_char *p, *end, ch;
+ ngx_uint_t len, hash;
+ ngx_http_core_srv_conf_t *cscf;
+
+ enum {
+ sw_name_len = 0,
+ sw_name,
+ sw_value_len,
+ sw_value
+ } state;
+
+ state = r->state;
+
+ p = r->header_in->pos;
+ end = r->header_in->last;
+
+ switch (state) {
+
+ case sw_name_len:
+
+ if (end - p < NGX_SPDY_NV_NLEN_SIZE) {
+ return NGX_AGAIN;
+ }
+
+ len = ngx_spdy_frame_parse_uint16(p);
+
+ if (!len) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ p += NGX_SPDY_NV_NLEN_SIZE;
+
+ r->header_name_end = p + len;
+ r->lowcase_index = len;
+ r->invalid_header = 0;
+
+ state = sw_name;
+
+ /* fall through */
+
+ case sw_name:
+
+ if (r->header_name_end > end) {
+ break;
+ }
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ r->header_name_start = p;
+
+ hash = 0;
+
+ for ( /* void */ ; p != r->header_name_end; p++) {
+
+ ch = *p;
+
+ hash = ngx_hash(hash, ch);
+
+ if ((ch >= 'a' && ch <= 'z')
+ || (ch == '-')
+ || (ch >= '0' && ch <= '9')
+ || (ch == '_' && cscf->underscores_in_headers))
+ {
+ continue;
+ }
+
+ switch (ch) {
+ case '\0':
+ case LF:
+ case CR:
+ case ':':
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ if (ch >= 'A' && ch <= 'Z') {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ r->invalid_header = 1;
+ }
+
+ r->header_hash = hash;
+
+ state = sw_value_len;
+
+ /* fall through */
+
+ case sw_value_len:
+
+ if (end - p < NGX_SPDY_NV_VLEN_SIZE) {
+ break;
+ }
+
+ len = ngx_spdy_frame_parse_uint16(p);
+
+ if (!len) {
+ return NGX_ERROR;
+ }
+
+ p += NGX_SPDY_NV_VLEN_SIZE;
+
+ r->header_end = p + len;
+
+ state = sw_value;
+
+ /* fall through */
+
+ case sw_value:
+
+ if (r->header_end > end) {
+ break;
+ }
+
+ r->header_start = p;
+
+ for ( /* void */ ; p != r->header_end; p++) {
+
+ ch = *p;
+
+ if (ch == '\0') {
+
+ if (p == r->header_start) {
+ return NGX_ERROR;
+ }
+
+ r->header_size = p - r->header_start;
+ r->header_in->pos = p + 1;
+
+ return NGX_OK;
+ }
+
+ if (ch == CR || ch == LF) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+ }
+
+ r->header_size = p - r->header_start;
+ r->header_in->pos = p;
+
+ r->state = 0;
+
+ return NGX_DONE;
+ }
+
+ r->header_in->pos = p;
+ r->state = state;
+
+ return NGX_AGAIN;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r)
+{
+ u_char *old, *new;
+ size_t rest;
+ ngx_buf_t *buf;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_core_srv_conf_t *cscf;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy alloc large header buffer");
+
+ stream = r->spdy_stream;
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ if (stream->header_buffers
+ == (ngx_uint_t) cscf->large_client_header_buffers.num)
+ {
+ return NGX_DECLINED;
+ }
+
+ rest = r->header_in->last - r->header_in->pos;
+
+ if (rest >= cscf->large_client_header_buffers.size) {
+ return NGX_DECLINED;
+ }
+
+ buf = ngx_create_temp_buf(r->pool, cscf->large_client_header_buffers.size);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy large header alloc: %p %uz",
+ buf->pos, buf->end - buf->last);
+
+ old = r->header_in->pos;
+ new = buf->pos;
+
+ if (rest) {
+ buf->last = ngx_cpymem(new, old, rest);
+ }
+
+ if (r->header_name_end > old) {
+ r->header_name_end = new + (r->header_name_end - old);
+
+ } else if (r->header_end > old) {
+ r->header_end = new + (r->header_end - old);
+ }
+
+ r->header_in = buf;
+
+ stream->header_buffers++;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_handle_request_header(ngx_http_request_t *r)
+{
+ ngx_uint_t i;
+ ngx_table_elt_t *h;
+ ngx_http_core_srv_conf_t *cscf;
+ ngx_http_spdy_request_header_t *sh;
+
+ if (r->invalid_header) {
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ if (cscf->ignore_invalid_headers) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid header: \"%*s\"",
+ r->header_end - r->header_name_start,
+ r->header_name_start);
+ return NGX_OK;
+ }
+
+ } else {
+ for (i = 0; i < NGX_SPDY_REQUEST_HEADERS; i++) {
+ sh = &ngx_http_spdy_request_headers[i];
+
+ if (sh->hash != r->header_hash
+ || sh->len != r->lowcase_index
+ || ngx_strncmp(sh->header, r->header_name_start,
+ r->lowcase_index)
+ != 0)
+ {
+ continue;
+ }
+
+ return sh->handler(r);
+ }
+ }
+
+ h = ngx_list_push(&r->headers_in.headers);
+ if (h == NULL) {
+ ngx_http_spdy_close_stream(r->spdy_stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NGX_ERROR;
+ }
+
+ h->hash = r->header_hash;
+
+ h->key.len = r->lowcase_index;
+ h->key.data = r->header_name_start;
+ h->key.data[h->key.len] = '\0';
+
+ h->value.len = r->header_size;
+ h->value.data = r->header_start;
+ h->value.data[h->value.len] = '\0';
+
+ h->lowcase_key = h->key.data;
+
+ return NGX_OK;
+}
+
+
+void
+ngx_http_spdy_request_headers_init()
+{
+ ngx_uint_t i;
+ ngx_http_spdy_request_header_t *h;
+
+ for (i = 0; i < NGX_SPDY_REQUEST_HEADERS; i++) {
+ h = &ngx_http_spdy_request_headers[i];
+ h->hash = ngx_hash_key(h->header, h->len);
+ }
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_method(ngx_http_request_t *r)
+{
+ size_t k, len;
+ ngx_uint_t n;
+ const u_char *p, *m;
+
+ /*
+ * This array takes less than 256 sequential bytes,
+ * and if typical CPU cache line size is 64 bytes,
+ * it is prefetched for 4 load operations.
+ */
+ static const struct {
+ u_char len;
+ const u_char method[11];
+ uint32_t value;
+ } tests[] = {
+ { 3, "GET", NGX_HTTP_GET },
+ { 4, "POST", NGX_HTTP_POST },
+ { 4, "HEAD", NGX_HTTP_HEAD },
+ { 7, "OPTIONS", NGX_HTTP_OPTIONS },
+ { 8, "PROPFIND", NGX_HTTP_PROPFIND },
+ { 3, "PUT", NGX_HTTP_PUT },
+ { 5, "MKCOL", NGX_HTTP_MKCOL },
+ { 6, "DELETE", NGX_HTTP_DELETE },
+ { 4, "COPY", NGX_HTTP_COPY },
+ { 4, "MOVE", NGX_HTTP_MOVE },
+ { 9, "PROPPATCH", NGX_HTTP_PROPPATCH },
+ { 4, "LOCK", NGX_HTTP_LOCK },
+ { 6, "UNLOCK", NGX_HTTP_UNLOCK },
+ { 5, "PATCH", NGX_HTTP_PATCH },
+ { 5, "TRACE", NGX_HTTP_TRACE }
+ }, *test;
+
+ if (r->method_name.len) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ len = r->header_size;
+
+ r->method_name.len = len;
+ r->method_name.data = r->header_start;
+
+ test = tests;
+ n = sizeof(tests) / sizeof(tests[0]);
+
+ do {
+ if (len == test->len) {
+ p = r->method_name.data;
+ m = test->method;
+ k = len;
+
+ do {
+ if (*p++ != *m++) {
+ goto next;
+ }
+ } while (--k);
+
+ r->method = test->value;
+ return NGX_OK;
+ }
+
+ next:
+ test++;
+
+ } while (--n);
+
+ p = r->method_name.data;
+
+ do {
+ if ((*p < 'A' || *p > 'Z') && *p != '_') {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid method");
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ p++;
+
+ } while (--len);
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_scheme(ngx_http_request_t *r)
+{
+ if (r->schema_start) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ r->schema_start = r->header_start;
+ r->schema_end = r->header_end;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_url(ngx_http_request_t *r)
+{
+ if (r->unparsed_uri.len) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ r->uri_start = r->header_start;
+ r->uri_end = r->header_end;
+
+ if (ngx_http_parse_uri(r) != NGX_OK) {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ if (ngx_http_process_request_uri(r) != NGX_OK) {
+ return NGX_ERROR;
+ }
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_version(ngx_http_request_t *r)
+{
+ u_char *p, ch;
+
+ if (r->http_protocol.len) {
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ p = r->header_start;
+
+ if (r->header_size < 8 || !(ngx_str5cmp(p, 'H', 'T', 'T', 'P', '/'))) {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ ch = *(p + 5);
+
+ if (ch < '1' || ch > '9') {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ r->http_major = ch - '0';
+
+ for (p += 6; p != r->header_end - 2; p++) {
+
+ ch = *p;
+
+ if (ch < '0' || ch > '9') {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ r->http_major = r->http_major * 10 + ch - '0';
+ }
+
+ if (*p != '.') {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ ch = *(p + 1);
+
+ if (ch < '0' || ch > '9') {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ r->http_minor = ch - '0';
+
+ for (p += 2; p != r->header_end; p++) {
+
+ ch = *p;
+
+ if (ch < '0' || ch > '9') {
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+
+ r->http_minor = r->http_minor * 10 + ch - '0';
+ }
+
+ r->http_protocol.len = r->header_size;
+ r->http_protocol.data = r->header_start;
+ r->http_version = r->http_major * 1000 + r->http_minor;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_construct_request_line(ngx_http_request_t *r)
+{
+ u_char *p;
+
+ if (r->method_name.len == 0
+ || r->unparsed_uri.len == 0
+ || r->http_protocol.len == 0)
+ {
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return NGX_ERROR;
+ }
+
+ r->request_line.len = r->method_name.len + 1
+ + r->unparsed_uri.len + 1
+ + r->http_protocol.len;
+
+ p = ngx_pnalloc(r->pool, r->request_line.len + 1);
+ if (p == NULL) {
+ ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NGX_ERROR;
+ }
+
+ r->request_line.data = p;
+
+ p = ngx_cpymem(p, r->method_name.data, r->method_name.len);
+
+ *p++ = ' ';
+
+ p = ngx_cpymem(p, r->unparsed_uri.data, r->unparsed_uri.len);
+
+ *p++ = ' ';
+
+ ngx_memcpy(p, r->http_protocol.data, r->http_protocol.len + 1);
+
+ /* some modules expect the space character after method name */
+ r->method_name.data = r->request_line.data;
+
+ return NGX_OK;
+}
+
+
+static void
+ngx_http_spdy_run_request(ngx_http_request_t *r)
+{
+ ngx_uint_t i;
+ ngx_list_part_t *part;
+ ngx_table_elt_t *h;
+ ngx_http_header_t *hh;
+ ngx_http_core_main_conf_t *cmcf;
+
+ if (ngx_http_spdy_construct_request_line(r) != NGX_OK) {
+ return;
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy http request line: \"%V\"", &r->request_line);
+
+ cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
+
+ part = &r->headers_in.headers.part;
+ h = part->elts;
+
+ for (i = 0 ;; i++) {
+
+ if (i >= part->nelts) {
+ if (part->next == NULL) {
+ break;
+ }
+
+ part = part->next;
+ h = part->elts;
+ i = 0;
+ }
+
+ hh = ngx_hash_find(&cmcf->headers_in_hash, h[i].hash,
+ h[i].lowcase_key, h[i].key.len);
+
+ if (hh && hh->handler(r, &h[i], hh->offset) != NGX_OK) {
+ return;
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "http header: \"%V: %V\"", &h[i].key, &h[i].value);
+ }
+
+ r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
+
+ if (ngx_http_process_request_header(r) != NGX_OK) {
+ return;
+ }
+
+ ngx_http_process_request(r);
+}
+
+
+static ngx_int_t
+ngx_http_spdy_init_request_body(ngx_http_request_t *r)
+{
+ ngx_buf_t *buf;
+ ngx_temp_file_t *tf;
+ ngx_http_request_body_t *rb;
+ ngx_http_core_loc_conf_t *clcf;
+
+ rb = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t));
+ if (rb == NULL) {
+ return NGX_ERROR;
+ }
+
+ r->request_body = rb;
+
+ if (r->spdy_stream->in_closed) {
+ return NGX_OK;
+ }
+
+ rb->rest = r->headers_in.content_length_n;
+
+ clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+ if (r->request_body_in_file_only
+ || rb->rest > (off_t) clcf->client_body_buffer_size
+ || rb->rest < 0)
+ {
+ tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
+ if (tf == NULL) {
+ return NGX_ERROR;
+ }
+
+ tf->file.fd = NGX_INVALID_FILE;
+ tf->file.log = r->connection->log;
+ tf->path = clcf->client_body_temp_path;
+ tf->pool = r->pool;
+ tf->warn = "a client request body is buffered to a temporary file";
+ tf->log_level = r->request_body_file_log_level;
+ tf->persistent = r->request_body_in_persistent_file;
+ tf->clean = r->request_body_in_clean_file;
+
+ if (r->request_body_file_group_access) {
+ tf->access = 0660;
+ }
+
+ rb->temp_file = tf;
+
+ if (r->spdy_stream->in_closed
+ && ngx_create_temp_file(&tf->file, tf->path, tf->pool,
+ tf->persistent, tf->clean, tf->access)
+ != NGX_OK)
+ {
+ return NGX_ERROR;
+ }
+
+ buf = ngx_calloc_buf(r->pool);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ if (rb->rest == 0) {
+ buf->in_file = 1;
+ buf->file = &tf->file;
+ } else {
+ rb->buf = buf;
+ }
+
+ } else {
+
+ if (rb->rest == 0) {
+ return NGX_OK;
+ }
+
+ buf = ngx_create_temp_buf(r->pool, (size_t) rb->rest);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ rb->buf = buf;
+ }
+
+ rb->bufs = ngx_alloc_chain_link(r->pool);
+ if (rb->bufs == NULL) {
+ return NGX_ERROR;
+ }
+
+ rb->bufs->buf = buf;
+ rb->bufs->next = NULL;
+
+ rb->rest = 0;
+
+ return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_spdy_read_request_body(ngx_http_request_t *r,
+ ngx_http_client_body_handler_pt post_handler)
+{
+ ngx_http_spdy_stream_t *stream;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy read request body");
+
+ stream = r->spdy_stream;
+
+ switch (stream->skip_data) {
+
+ case NGX_SPDY_DATA_DISCARD:
+ post_handler(r);
+ return NGX_OK;
+
+ case NGX_SPDY_DATA_ERROR:
+ if (r->headers_in.content_length_n == -1) {
+ return NGX_HTTP_REQUEST_ENTITY_TOO_LARGE;
+ } else {
+ return NGX_HTTP_BAD_REQUEST;
+ }
+
+ case NGX_SPDY_DATA_INTERNAL_ERROR:
+ return NGX_HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ if (!r->request_body && ngx_http_spdy_init_request_body(r) != NGX_OK) {
+ stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+ return NGX_HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ if (stream->in_closed) {
+ post_handler(r);
+ return NGX_OK;
+ }
+
+ r->request_body->post_handler = post_handler;
+
+ return NGX_AGAIN;
+}
+
+
+void
+ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc)
+{
+ ngx_event_t *ev;
+ ngx_connection_t *fc;
+ ngx_http_spdy_stream_t **index, *s;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_connection_t *sc;
+
+ sc = stream->connection;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy close stream %ui, processing %ui",
+ stream->id, sc->processing);
+
+ if (!stream->out_closed) {
+ if (ngx_http_spdy_send_rst_stream(sc, stream->id,
+ NGX_SPDY_INTERNAL_ERROR,
+ stream->priority)
+ != NGX_OK)
+ {
+ sc->connection->error = 1;
+ }
+ }
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ index = sc->streams_index + ngx_http_spdy_stream_index(sscf, stream->id);
+
+ for ( ;; ) {
+ s = *index;
+
+ if (s == NULL) {
+ break;
+ }
+
+ if (s == stream) {
+ *index = s->index;
+ break;
+ }
+
+ index = &s->index;
+ }
+
+ fc = stream->request->connection;
+
+ ngx_http_free_request(stream->request, rc);
+
+ ev = fc->read;
+
+ if (ev->active || ev->disabled) {
+ ngx_del_event(ev, NGX_READ_EVENT, 0);
+ }
+
+ if (ev->timer_set) {
+ ngx_del_timer(ev);
+ }
+
+ if (ev->prev) {
+ ngx_delete_posted_event(ev);
+ }
+
+ ev = fc->write;
+
+ if (ev->active || ev->disabled) {
+ ngx_del_event(ev, NGX_WRITE_EVENT, 0);
+ }
+
+ if (ev->timer_set) {
+ ngx_del_timer(ev);
+ }
+
+ if (ev->prev) {
+ ngx_delete_posted_event(ev);
+ }
+
+ fc->data = sc->free_fake_connections;
+ sc->free_fake_connections = fc;
+
+ sc->processing--;
+
+ if (sc->processing || sc->blocked) {
+ return;
+ }
+
+ ev = sc->connection->read;
+
+ ev->handler = ngx_http_spdy_handle_connection_handler;
+ ngx_post_event(ev, &ngx_posted_events);
+}
+
+
+static void
+ngx_http_spdy_handle_connection_handler(ngx_event_t *rev)
+{
+ ngx_connection_t *c;
+
+ rev->handler = ngx_http_spdy_read_handler;
+
+ if (rev->ready) {
+ ngx_http_spdy_read_handler(rev);
+ return;
+ }
+
+ c = rev->data;
+
+ ngx_http_spdy_handle_connection(c->data);
+}
+
+
+static void
+ngx_http_spdy_keepalive_handler(ngx_event_t *rev)
+{
+ ngx_connection_t *c;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_connection_t *sc;
+
+ c = rev->data;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy keepalive handler");
+
+ if (rev->timedout || c->close) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+#if (NGX_HAVE_KQUEUE)
+
+ if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
+ if (rev->pending_eof) {
+ c->log->handler = NULL;
+ ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
+ "kevent() reported that client %V closed "
+ "keepalive connection", &c->addr_text);
+#if (NGX_HTTP_SSL)
+ if (c->ssl) {
+ c->ssl->no_send_shutdown = 1;
+ }
+#endif
+ ngx_http_close_connection(c);
+ return;
+ }
+ }
+
+#endif
+
+ c->destroyed = 0;
+ c->idle = 0;
+ ngx_reusable_connection(c, 0);
+
+ sc = c->data;
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ sc->pool = ngx_create_pool(sscf->pool_size, sc->connection->log);
+ if (sc->pool == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->streams_index = ngx_pcalloc(sc->pool,
+ ngx_http_spdy_streams_index_size(sscf)
+ * sizeof(ngx_http_spdy_stream_t *));
+ if (sc->streams_index == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ c->write->handler = ngx_http_spdy_write_handler;
+
+ rev->handler = ngx_http_spdy_read_handler;
+ ngx_http_spdy_read_handler(rev);
+}
+
+
+static void
+ngx_http_spdy_finalize_connection(ngx_http_spdy_connection_t *sc,
+ ngx_int_t rc)
+{
+ ngx_uint_t i, size;
+ ngx_event_t *ev;
+ ngx_connection_t *c, *fc;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ c = sc->connection;
+
+ if (!sc->processing) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ c->error = 1;
+ c->read->handler = ngx_http_empty_handler;
+
+ sc->last_out = NULL;
+
+ sc->blocked = 1;
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ size = ngx_http_spdy_streams_index_size(sscf);
+
+ for (i = 0; i < size; i++) {
+ stream = sc->streams_index[i];
+
+ while (stream) {
+ r = stream->request;
+
+ fc = r->connection;
+ fc->error = 1;
+
+ if (stream->waiting) {
+ r->blocked -= stream->waiting;
+ stream->waiting = 0;
+ ev = fc->write;
+
+ } else {
+ ev = fc->read;
+ }
+
+ stream = stream->index;
+
+ ev->eof = 1;
+ ev->handler(ev);
+ }
+ }
+
+ sc->blocked = 0;
+
+ if (sc->processing) {
+ return;
+ }
+
+ ngx_http_close_connection(c);
+}
+
+
+static void
+ngx_http_spdy_pool_cleanup(void *data)
+{
+ ngx_http_spdy_connection_t *sc = data;
+
+ if (sc->pool) {
+ ngx_destroy_pool(sc->pool);
+ }
+}
+
+
+static void *
+ngx_http_spdy_zalloc(void *opaque, u_int items, u_int size)
+{
+ ngx_http_spdy_connection_t *sc = opaque;
+
+ return ngx_palloc(sc->connection->pool, items * size);
+}
+
+
+static void
+ngx_http_spdy_zfree(void *opaque, void *address)
+{
+#if 0
+ ngx_http_spdy_connection_t *sc = opaque;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy zfree: %p", address);
+#endif
+}
diff --git a/src/http/ngx_http_spdy.h b/src/http/ngx_http_spdy.h
new file mode 100644
index 000000000..4294e3d50
--- /dev/null
+++ b/src/http/ngx_http_spdy.h
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#ifndef _NGX_HTTP_SPDY_H_INCLUDED_
+#define _NGX_HTTP_SPDY_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+#include <zlib.h>
+
+
+#define NGX_SPDY_VERSION 2
+
+#ifdef TLSEXT_TYPE_next_proto_neg
+#define NGX_SPDY_NPN_ADVERTISE "\x06spdy/2"
+#define NGX_SPDY_NPN_NEGOTIATED "spdy/2"
+#endif
+
+#define NGX_SPDY_STATE_BUFFER_SIZE 16
+
+#define NGX_SPDY_CTL_BIT 1
+
+#define NGX_SPDY_SYN_STREAM 1
+#define NGX_SPDY_SYN_REPLY 2
+#define NGX_SPDY_RST_STREAM 3
+#define NGX_SPDY_SETTINGS 4
+#define NGX_SPDY_NOOP 5
+#define NGX_SPDY_PING 6
+#define NGX_SPDY_GOAWAY 7
+#define NGX_SPDY_HEADERS 8
+
+#define NGX_SPDY_FRAME_HEADER_SIZE 8
+
+#define NGX_SPDY_SID_SIZE 4
+
+#define NGX_SPDY_SYN_STREAM_SIZE 10
+#define NGX_SPDY_SYN_REPLY_SIZE 6
+#define NGX_SPDY_RST_STREAM_SIZE 8
+#define NGX_SPDY_PING_SIZE 4
+#define NGX_SPDY_GOAWAY_SIZE 4
+#define NGX_SPDY_NV_NUM_SIZE 2
+#define NGX_SPDY_NV_NLEN_SIZE 2
+#define NGX_SPDY_NV_VLEN_SIZE 2
+#define NGX_SPDY_SETTINGS_NUM_SIZE 4
+#define NGX_SPDY_SETTINGS_IDF_SIZE 4
+#define NGX_SPDY_SETTINGS_VAL_SIZE 4
+
+#define NGX_SPDY_SETTINGS_PAIR_SIZE \
+ (NGX_SPDY_SETTINGS_IDF_SIZE + NGX_SPDY_SETTINGS_VAL_SIZE)
+
+#define NGX_SPDY_HIGHEST_PRIORITY 0
+#define NGX_SPDY_LOWEST_PRIORITY 3
+
+#define NGX_SPDY_FLAG_FIN 0x01
+#define NGX_SPDY_FLAG_UNIDIRECTIONAL 0x02
+#define NGX_SPDY_FLAG_CLEAR_SETTINGS 0x01
+
+#define NGX_SPDY_MAX_FRAME_SIZE ((1 << 24) - 1)
+
+#define NGX_SPDY_DATA_DISCARD 1
+#define NGX_SPDY_DATA_ERROR 2
+#define NGX_SPDY_DATA_INTERNAL_ERROR 3
+
+
+typedef struct ngx_http_spdy_connection_s ngx_http_spdy_connection_t;
+typedef struct ngx_http_spdy_out_frame_s ngx_http_spdy_out_frame_t;
+
+
+typedef u_char *(*ngx_http_spdy_handler_pt) (ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+
+struct ngx_http_spdy_connection_s {
+ ngx_connection_t *connection;
+ ngx_http_connection_t *http_connection;
+
+ ngx_uint_t processing;
+
+ u_char buffer[NGX_SPDY_STATE_BUFFER_SIZE];
+ size_t buffer_used;
+ ngx_http_spdy_handler_pt handler;
+
+ z_stream zstream_in;
+ z_stream zstream_out;
+
+ ngx_pool_t *pool;
+
+ ngx_http_spdy_out_frame_t *free_ctl_frames;
+ ngx_connection_t *free_fake_connections;
+
+ ngx_http_spdy_stream_t **streams_index;
+
+ ngx_http_spdy_out_frame_t *last_out;
+ ngx_http_spdy_stream_t *last_stream;
+
+ ngx_http_spdy_stream_t *stream;
+
+ ngx_uint_t headers;
+ size_t length;
+ u_char flags;
+
+ ngx_uint_t last_sid;
+
+ unsigned blocked:2;
+ unsigned waiting:1; /* FIXME better name */
+};
+
+
+struct ngx_http_spdy_stream_s {
+ ngx_uint_t id;
+ ngx_http_request_t *request;
+ ngx_http_spdy_connection_t *connection;
+ ngx_http_spdy_stream_t *index;
+ ngx_http_spdy_stream_t *next;
+
+ ngx_uint_t header_buffers;
+ ngx_uint_t waiting;
+ ngx_http_spdy_out_frame_t *free_frames;
+ ngx_chain_t *free_data_headers;
+
+ unsigned priority:2;
+ unsigned handled:1;
+ unsigned in_closed:1;
+ unsigned out_closed:1;
+ unsigned skip_data:2;
+};
+
+
+struct ngx_http_spdy_out_frame_s {
+ ngx_http_spdy_out_frame_t *next;
+ ngx_chain_t *first;
+ ngx_chain_t *last;
+ ngx_int_t (*handler)(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame);
+
+ ngx_http_spdy_out_frame_t *free;
+
+ ngx_http_spdy_stream_t *stream;
+ size_t size;
+
+ ngx_uint_t priority;
+ unsigned blocked:1;
+ unsigned fin:1;
+};
+
+
+static ngx_inline void
+ngx_http_spdy_queue_frame(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_http_spdy_out_frame_t **out;
+
+ for (out = &sc->last_out; *out; out = &(*out)->next)
+ {
+ if (frame->priority >= (*out)->priority) {
+ break;
+ }
+ }
+
+ frame->next = *out;
+ *out = frame;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_queue_blocked_frame(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_http_spdy_out_frame_t **out;
+
+ for (out = &sc->last_out; *out && !(*out)->blocked; out = &(*out)->next)
+ {
+ if (frame->priority >= (*out)->priority) {
+ break;
+ }
+ }
+
+ frame->next = *out;
+ *out = frame;
+}
+
+
+void ngx_http_spdy_init(ngx_event_t *rev);
+void ngx_http_spdy_request_headers_init();
+
+ngx_int_t ngx_http_spdy_read_request_body(ngx_http_request_t *r,
+ ngx_http_client_body_handler_pt post_handler);
+
+void ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc);
+
+ngx_int_t ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc);
+
+
+#define ngx_spdy_frame_aligned_write_uint16(p, s) \
+ (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
+
+#define ngx_spdy_frame_aligned_write_uint32(p, s) \
+ (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t))
+
+#if (NGX_HAVE_NONALIGNED)
+
+#define ngx_spdy_frame_write_uint16 ngx_spdy_frame_aligned_write_uint16
+#define ngx_spdy_frame_write_uint32 ngx_spdy_frame_aligned_write_uint32
+
+#else
+
+#define ngx_spdy_frame_write_uint16(p, s) \
+ ((p)[0] = (u_char) (s) >> 8, (p)[1] = (u_char) (s), (p) + sizeof(uint16_t))
+
+#define ngx_spdy_frame_write_uint32(p, s) \
+ ((p)[0] = (u_char) (s) >> 24, \
+ (p)[1] = (u_char) (s) >> 16, \
+ (p)[2] = (u_char) (s) >> 8, \
+ (p)[3] = (u_char) (s), (p) + sizeof(uint32_t))
+
+#endif
+
+
+#define ngx_spdy_ctl_frame_head(t) \
+ ((uint32_t) NGX_SPDY_CTL_BIT << 31 | NGX_SPDY_VERSION << 16 | (t))
+
+#define ngx_spdy_frame_write_head(p, t) \
+ ngx_spdy_frame_aligned_write_uint32(p, ngx_spdy_ctl_frame_head(t))
+
+#define ngx_spdy_frame_write_flags_and_len(p, f, l) \
+ ngx_spdy_frame_aligned_write_uint32(p, (f) << 24 | (l))
+
+#define ngx_spdy_frame_write_sid ngx_spdy_frame_aligned_write_uint32
+
+#endif /* _NGX_HTTP_SPDY_H_INCLUDED_ */
diff --git a/src/http/ngx_http_spdy_filter_module.c b/src/http/ngx_http_spdy_filter_module.c
new file mode 100644
index 000000000..8fe46b2e9
--- /dev/null
+++ b/src/http/ngx_http_spdy_filter_module.c
@@ -0,0 +1,999 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <nginx.h>
+#include <ngx_http_spdy_module.h>
+
+#include <zlib.h>
+
+
+#define NGX_SPDY_WRITE_BUFFERED NGX_HTTP_WRITE_BUFFERED
+
+#define ngx_http_spdy_nv_nsize(h) (NGX_SPDY_NV_NLEN_SIZE + sizeof(h) - 1)
+#define ngx_http_spdy_nv_vsize(h) (NGX_SPDY_NV_VLEN_SIZE + sizeof(h) - 1)
+
+#define ngx_http_spdy_nv_write_num ngx_spdy_frame_write_uint16
+#define ngx_http_spdy_nv_write_nlen ngx_spdy_frame_write_uint16
+#define ngx_http_spdy_nv_write_vlen ngx_spdy_frame_write_uint16
+
+#define ngx_http_spdy_nv_write_name(p, h) \
+ ngx_cpymem(ngx_http_spdy_nv_write_nlen(p, sizeof(h) - 1), h, sizeof(h) - 1)
+
+#define ngx_http_spdy_nv_write_val(p, h) \
+ ngx_cpymem(ngx_http_spdy_nv_write_vlen(p, sizeof(h) - 1), h, sizeof(h) - 1)
+
+static ngx_inline ngx_int_t ngx_http_spdy_filter_send(
+ ngx_connection_t *fc, ngx_http_spdy_stream_t *stream);
+
+static ngx_http_spdy_out_frame_t *ngx_http_spdy_filter_get_data_frame(
+ ngx_http_spdy_stream_t *stream, size_t len, ngx_uint_t flags,
+ ngx_chain_t *first, ngx_chain_t *last);
+
+static ngx_int_t ngx_http_spdy_syn_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_int_t ngx_http_spdy_data_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_inline void ngx_http_spdy_handle_frame(
+ ngx_http_spdy_stream_t *stream, ngx_http_spdy_out_frame_t *frame);
+static ngx_inline void ngx_http_spdy_handle_stream(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_stream_t *stream);
+
+static void ngx_http_spdy_filter_cleanup(void *data);
+
+static ngx_int_t ngx_http_spdy_filter_init(ngx_conf_t *cf);
+
+
+static ngx_http_module_t ngx_http_spdy_filter_module_ctx = {
+ NULL, /* preconfiguration */
+ ngx_http_spdy_filter_init, /* postconfiguration */
+
+ NULL, /* create main configuration */
+ NULL, /* init main configuration */
+
+ NULL, /* create server configuration */
+ NULL, /* merge server configuration */
+
+ NULL, /* create location configuration */
+ NULL /* merge location configuration */
+};
+
+
+ngx_module_t ngx_http_spdy_filter_module = {
+ NGX_MODULE_V1,
+ &ngx_http_spdy_filter_module_ctx, /* module context */
+ NULL, /* module directives */
+ NGX_HTTP_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
+static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
+
+
+static ngx_int_t
+ngx_http_spdy_header_filter(ngx_http_request_t *r)
+{
+ int rc;
+ size_t len;
+ u_char *p, *buf, *last;
+ ngx_buf_t *b;
+ ngx_str_t host;
+ ngx_uint_t i, j, count, port;
+ ngx_chain_t *cl;
+ ngx_list_part_t *part, *pt;
+ ngx_table_elt_t *header, *h;
+ ngx_connection_t *c;
+ ngx_http_cleanup_t *cln;
+ ngx_http_core_loc_conf_t *clcf;
+ ngx_http_core_srv_conf_t *cscf;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_out_frame_t *frame;
+ ngx_http_spdy_connection_t *sc;
+ struct sockaddr_in *sin;
+#if (NGX_HAVE_INET6)
+ struct sockaddr_in6 *sin6;
+#endif
+ u_char addr[NGX_SOCKADDR_STRLEN];
+
+ if (!r->spdy_stream) {
+ return ngx_http_next_header_filter(r);
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy header filter");
+
+ if (r->header_sent) {
+ return NGX_OK;
+ }
+
+ r->header_sent = 1;
+
+ if (r != r->main) {
+ return NGX_OK;
+ }
+
+ c = r->connection;
+
+ if (r->method == NGX_HTTP_HEAD) {
+ r->header_only = 1;
+ }
+
+ switch (r->headers_out.status) {
+
+ case NGX_HTTP_OK:
+ case NGX_HTTP_PARTIAL_CONTENT:
+ break;
+
+ case NGX_HTTP_NOT_MODIFIED:
+ r->header_only = 1;
+ break;
+
+ case NGX_HTTP_NO_CONTENT:
+ r->header_only = 1;
+
+ ngx_str_null(&r->headers_out.content_type);
+
+ r->headers_out.content_length = NULL;
+ r->headers_out.content_length_n = -1;
+
+ /* fall through */
+
+ default:
+ r->headers_out.last_modified_time = -1;
+ r->headers_out.last_modified = NULL;
+ }
+
+ len = NGX_SPDY_NV_NUM_SIZE
+ + ngx_http_spdy_nv_nsize("version")
+ + ngx_http_spdy_nv_vsize("HTTP/1.1")
+ + ngx_http_spdy_nv_nsize("status")
+ + ngx_http_spdy_nv_vsize("418");
+
+ clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+ if (r->headers_out.server == NULL) {
+ len += ngx_http_spdy_nv_nsize("server");
+ len += clcf->server_tokens ? ngx_http_spdy_nv_vsize(NGINX_VER)
+ : ngx_http_spdy_nv_vsize("nginx");
+ }
+
+ if (r->headers_out.date == NULL) {
+ len += ngx_http_spdy_nv_nsize("date")
+ + ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
+ }
+
+ if (r->headers_out.content_type.len) {
+ len += ngx_http_spdy_nv_nsize("content-type")
+ + NGX_SPDY_NV_VLEN_SIZE + r->headers_out.content_type.len;
+
+ if (r->headers_out.content_type_len == r->headers_out.content_type.len
+ && r->headers_out.charset.len)
+ {
+ len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
+ }
+ }
+
+ if (r->headers_out.content_length == NULL
+ && r->headers_out.content_length_n >= 0)
+ {
+ len += ngx_http_spdy_nv_nsize("content-length")
+ + NGX_SPDY_NV_VLEN_SIZE + NGX_OFF_T_LEN;
+ }
+
+ if (r->headers_out.last_modified == NULL
+ && r->headers_out.last_modified_time != -1)
+ {
+ len += ngx_http_spdy_nv_nsize("last-modified")
+ + ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
+ }
+
+ if (r->headers_out.location
+ && r->headers_out.location->value.len
+ && r->headers_out.location->value.data[0] == '/')
+ {
+ r->headers_out.location->hash = 0;
+
+ if (clcf->server_name_in_redirect) {
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+ host = cscf->server_name;
+
+ } else if (r->headers_in.server.len) {
+ host = r->headers_in.server;
+
+ } else {
+ host.len = NGX_SOCKADDR_STRLEN;
+ host.data = addr;
+
+ if (ngx_connection_local_sockaddr(c, &host, 0) != NGX_OK) {
+ return NGX_ERROR;
+ }
+ }
+
+ switch (c->local_sockaddr->sa_family) {
+
+#if (NGX_HAVE_INET6)
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
+ port = ntohs(sin6->sin6_port);
+ break;
+#endif
+#if (NGX_HAVE_UNIX_DOMAIN)
+ case AF_UNIX:
+ port = 0;
+ break;
+#endif
+ default: /* AF_INET */
+ sin = (struct sockaddr_in *) c->local_sockaddr;
+ port = ntohs(sin->sin_port);
+ break;
+ }
+
+ len += ngx_http_spdy_nv_nsize("location")
+ + ngx_http_spdy_nv_vsize("https://")
+ + host.len
+ + r->headers_out.location->value.len;
+
+ if (clcf->port_in_redirect) {
+
+#if (NGX_HTTP_SSL)
+ if (c->ssl)
+ port = (port == 443) ? 0 : port;
+ else
+#endif
+ port = (port == 80) ? 0 : port;
+
+ } else {
+ port = 0;
+ }
+
+ if (port) {
+ len += sizeof(":65535") - 1;
+ }
+
+ } else {
+ ngx_str_null(&host);
+ port = 0;
+ }
+
+ part = &r->headers_out.headers.part;
+ header = part->elts;
+
+ for (i = 0; /* void */; i++) {
+
+ if (i >= part->nelts) {
+ if (part->next == NULL) {
+ break;
+ }
+
+ part = part->next;
+ header = part->elts;
+ i = 0;
+ }
+
+ if (header[i].hash == 0) {
+ continue;
+ }
+
+ len += NGX_SPDY_NV_NLEN_SIZE + header[i].key.len
+ + NGX_SPDY_NV_VLEN_SIZE + header[i].value.len;
+ }
+
+ buf = ngx_alloc(len, r->pool->log);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ last = buf + NGX_SPDY_NV_NUM_SIZE;
+
+ last = ngx_http_spdy_nv_write_name(last, "version");
+ last = ngx_http_spdy_nv_write_val(last, "HTTP/1.1");
+
+ last = ngx_http_spdy_nv_write_name(last, "status");
+ last = ngx_spdy_frame_write_uint16(last, 3);
+ last = ngx_sprintf(last, "%03ui", r->headers_out.status);
+
+ count = 2;
+
+ if (r->headers_out.server == NULL) {
+ last = ngx_http_spdy_nv_write_name(last, "server");
+ last = clcf->server_tokens
+ ? ngx_http_spdy_nv_write_val(last, NGINX_VER)
+ : ngx_http_spdy_nv_write_val(last, "nginx");
+
+ count++;
+ }
+
+ if (r->headers_out.date == NULL) {
+ last = ngx_http_spdy_nv_write_name(last, "date");
+
+ last = ngx_http_spdy_nv_write_vlen(last, ngx_cached_http_time.len);
+
+ last = ngx_cpymem(last, ngx_cached_http_time.data,
+ ngx_cached_http_time.len);
+
+ count++;
+ }
+
+ if (r->headers_out.content_type.len) {
+
+ last = ngx_http_spdy_nv_write_name(last, "content-type");
+
+ p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+ last = ngx_cpymem(p, r->headers_out.content_type.data,
+ r->headers_out.content_type.len);
+
+ if (r->headers_out.content_type_len == r->headers_out.content_type.len
+ && r->headers_out.charset.len)
+ {
+ last = ngx_cpymem(last, "; charset=", sizeof("; charset=") - 1);
+
+ last = ngx_cpymem(last, r->headers_out.charset.data,
+ r->headers_out.charset.len);
+
+ /* update r->headers_out.content_type for possible logging */
+
+ r->headers_out.content_type.len = last - p;
+ r->headers_out.content_type.data = p;
+ }
+
+ (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+ r->headers_out.content_type.len);
+
+ count++;
+ }
+
+ if (r->headers_out.content_length == NULL
+ && r->headers_out.content_length_n >= 0)
+ {
+ last = ngx_http_spdy_nv_write_name(last, "content-length");
+
+ p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+ last = ngx_sprintf(p, "%O", r->headers_out.content_length_n);
+
+ (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+ last - p);
+
+ count++;
+ }
+
+ if (r->headers_out.last_modified == NULL
+ && r->headers_out.last_modified_time != -1)
+ {
+ last = ngx_http_spdy_nv_write_name(last, "last-modified");
+
+ p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+ last = ngx_http_time(p, r->headers_out.last_modified_time);
+
+ (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+ last - p);
+
+ count++;
+ }
+
+ if (host.data) {
+
+ last = ngx_http_spdy_nv_write_name(last, "location");
+
+ p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+ last = ngx_cpymem(p, "http", sizeof("http") - 1);
+
+#if (NGX_HTTP_SSL)
+ if (c->ssl) {
+ *last++ ='s';
+ }
+#endif
+
+ *last++ = ':'; *last++ = '/'; *last++ = '/';
+
+ last = ngx_cpymem(last, host.data, host.len);
+
+ if (port) {
+ last = ngx_sprintf(last, ":%ui", port);
+ }
+
+ last = ngx_cpymem(last, r->headers_out.location->value.data,
+ r->headers_out.location->value.len);
+
+ /* update r->headers_out.location->value for possible logging */
+
+ r->headers_out.location->value.len = last - p;
+ r->headers_out.location->value.data = p;
+ ngx_str_set(&r->headers_out.location->key, "location");
+
+ (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+ r->headers_out.location->value.len);
+
+ count++;
+ }
+
+ part = &r->headers_out.headers.part;
+ header = part->elts;
+
+ for (i = 0; /* void */; i++) {
+
+ if (i >= part->nelts) {
+ if (part->next == NULL) {
+ break;
+ }
+
+ part = part->next;
+ header = part->elts;
+ i = 0;
+ }
+
+ if (header[i].hash == 0 || header[i].hash == 2) {
+ continue;
+ }
+
+ if ((header[i].key.len == 6
+ && ngx_strncasecmp(header[i].key.data,
+ (u_char *) "status", 6) == 0)
+ || (header[i].key.len == 7
+ && ngx_strncasecmp(header[i].key.data,
+ (u_char *) "version", 7) == 0))
+ {
+ header[i].hash = 0;
+ continue;
+ }
+
+ last = ngx_http_spdy_nv_write_nlen(last, header[i].key.len);
+
+ ngx_strlow(last, header[i].key.data, header[i].key.len);
+ last += header[i].key.len;
+
+ p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+ last = ngx_cpymem(p, header[i].value.data, header[i].value.len);
+
+ pt = part;
+ h = header;
+
+ for (j = i + 1; /* void */; j++) {
+
+ if (j >= pt->nelts) {
+ if (pt->next == NULL) {
+ break;
+ }
+
+ pt = pt->next;
+ h = pt->elts;
+ j = 0;
+ }
+
+ if (h[j].hash == 0 || h[j].hash == 2
+ || h[j].key.len != header[i].key.len
+ || ngx_strncasecmp(header[i].key.data, h[j].key.data,
+ header[i].key.len))
+ {
+ continue;
+ }
+
+ *last++ = '\0';
+
+ last = ngx_cpymem(last, h[j].value.data, h[j].value.len);
+
+ h[j].hash = 2;
+ }
+
+ (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+ last - p);
+
+ count++;
+ }
+
+ (void) ngx_spdy_frame_write_uint16(buf, count);
+
+ stream = r->spdy_stream;
+ sc = stream->connection;
+
+ len = last - buf;
+
+ b = ngx_create_temp_buf(r->pool, NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SYN_REPLY_SIZE
+ + deflateBound(&sc->zstream_out, len));
+ if (b == NULL) {
+ ngx_free(buf);
+ return NGX_ERROR;
+ }
+
+ b->last += NGX_SPDY_FRAME_HEADER_SIZE + NGX_SPDY_SYN_REPLY_SIZE;
+
+ sc->zstream_out.next_in = buf;
+ sc->zstream_out.avail_in = len;
+ sc->zstream_out.next_out = b->last;
+ sc->zstream_out.avail_out = b->end - b->last;
+
+ rc = deflate(&sc->zstream_out, Z_SYNC_FLUSH);
+
+ ngx_free(buf);
+
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "spdy deflate() failed: %d", rc);
+ return NGX_ERROR;
+ }
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ sc->zstream_out.next_in, sc->zstream_out.next_out,
+ sc->zstream_out.avail_in, sc->zstream_out.avail_out,
+ rc);
+
+ b->last = sc->zstream_out.next_out;
+
+ p = b->pos;
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_SYN_REPLY);
+
+ len = b->last - b->pos;
+
+ r->header_size = len;
+
+ if (r->header_only) {
+ b->last_buf = 1;
+ p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_FIN,
+ len - NGX_SPDY_FRAME_HEADER_SIZE);
+ } else {
+ p = ngx_spdy_frame_write_flags_and_len(p, 0,
+ len - NGX_SPDY_FRAME_HEADER_SIZE);
+ }
+
+ (void) ngx_spdy_frame_write_sid(p, stream->id);
+
+ cl = ngx_alloc_chain_link(r->pool);
+ if (cl == NULL) {
+ return NGX_ERROR;
+ }
+
+ cl->buf = b;
+ cl->next = NULL;
+
+ frame = ngx_palloc(r->pool, sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ frame->first = cl;
+ frame->last = cl;
+ frame->handler = ngx_http_spdy_syn_frame_handler;
+ frame->free = NULL;
+ frame->stream = stream;
+ frame->size = len;
+ frame->priority = stream->priority;
+ frame->blocked = 1;
+ frame->fin = r->header_only;
+
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
+ "spdy:%ui create SYN_REPLY frame %p: size:%uz",
+ stream->id, frame, frame->size);
+
+ ngx_http_spdy_queue_blocked_frame(sc, frame);
+
+ r->blocked++;
+
+ cln = ngx_http_cleanup_add(r, 0);
+ if (cln == NULL) {
+ return NGX_ERROR;
+ }
+
+ cln->handler = ngx_http_spdy_filter_cleanup;
+ cln->data = stream;
+
+ stream->waiting = 1;
+
+ return ngx_http_spdy_filter_send(c, stream);
+}
+
+
+static ngx_int_t
+ngx_http_spdy_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
+{
+ off_t size;
+ ngx_buf_t *b;
+ ngx_chain_t *cl, *ll, *out, **ln;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_out_frame_t *frame;
+
+ stream = r->spdy_stream;
+
+ if (stream == NULL) {
+ return ngx_http_next_body_filter(r, in);
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy body filter \"%V?%V\"", &r->uri, &r->args);
+
+ if (in == NULL || r->header_only) {
+
+ if (stream->waiting) {
+ return NGX_AGAIN;
+ }
+
+ r->connection->buffered &= ~NGX_SPDY_WRITE_BUFFERED;
+
+ return NGX_OK;
+ }
+
+ size = 0;
+ ln = &out;
+ ll = in;
+
+ for ( ;; ) {
+ b = ll->buf;
+#if 1
+ if (ngx_buf_size(b) == 0 && !ngx_buf_special(b)) {
+ ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+ "zero size buf in spdy body filter "
+ "t:%d r:%d f:%d %p %p-%p %p %O-%O",
+ b->temporary,
+ b->recycled,
+ b->in_file,
+ b->start,
+ b->pos,
+ b->last,
+ b->file,
+ b->file_pos,
+ b->file_last);
+
+ ngx_debug_point();
+ return NGX_ERROR;
+ }
+#endif
+ cl = ngx_alloc_chain_link(r->pool);
+ if (cl == NULL) {
+ return NGX_ERROR;
+ }
+
+ size += ngx_buf_size(b);
+ cl->buf = b;
+
+ *ln = cl;
+ ln = &cl->next;
+
+ if (ll->next == NULL) {
+ break;
+ }
+
+ ll = ll->next;
+ }
+
+ if (size > NGX_SPDY_MAX_FRAME_SIZE) {
+ ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+ "FIXME: chain too big in spdy filter: %O", size);
+ return NGX_ERROR;
+ }
+
+ frame = ngx_http_spdy_filter_get_data_frame(stream, (size_t) size,
+ b->last_buf, out, cl);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_http_spdy_queue_frame(stream->connection, frame);
+
+ stream->waiting++;
+
+ r->main->blocked++;
+
+ return ngx_http_spdy_filter_send(r->connection, stream);
+}
+
+
+static ngx_http_spdy_out_frame_t *
+ngx_http_spdy_filter_get_data_frame(ngx_http_spdy_stream_t *stream,
+ size_t len, ngx_uint_t fin, ngx_chain_t *first, ngx_chain_t *last)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_uint_t flags;
+ ngx_chain_t *cl;
+ ngx_http_spdy_out_frame_t *frame;
+
+
+ frame = stream->free_frames;
+
+ if (frame) {
+ stream->free_frames = frame->free;
+
+ } else {
+ frame = ngx_palloc(stream->request->pool,
+ sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NULL;
+ }
+ }
+
+ ngx_log_debug4(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
+ "spdy:%ui create DATA frame %p: len:%uz fin:%ui",
+ stream->id, frame, len, fin);
+
+ if (len || fin) {
+
+ flags = fin ? NGX_SPDY_FLAG_FIN : 0;
+
+ cl = ngx_chain_get_free_buf(stream->request->pool,
+ &stream->free_data_headers);
+ if (cl == NULL) {
+ return NULL;
+ }
+
+ buf = cl->buf;
+
+ if (buf->start) {
+ p = buf->start;
+ buf->pos = p;
+
+ p += sizeof(uint32_t);
+
+ (void) ngx_spdy_frame_write_flags_and_len(p, flags, len);
+
+ } else {
+ p = ngx_palloc(stream->request->pool, NGX_SPDY_FRAME_HEADER_SIZE);
+ if (p == NULL) {
+ return NULL;
+ }
+
+ buf->pos = p;
+ buf->start = p;
+
+ p = ngx_spdy_frame_write_sid(p, stream->id);
+ p = ngx_spdy_frame_write_flags_and_len(p, flags, len);
+
+ buf->last = p;
+ buf->end = p;
+
+ buf->tag = (ngx_buf_tag_t) &ngx_http_spdy_filter_module;
+ buf->memory = 1;
+ }
+
+ cl->next = first;
+ first = cl;
+ }
+
+ frame->first = first;
+ frame->last = last;
+ frame->handler = ngx_http_spdy_data_frame_handler;
+ frame->free = NULL;
+ frame->stream = stream;
+ frame->size = NGX_SPDY_FRAME_HEADER_SIZE + len;
+ frame->priority = stream->priority;
+ frame->blocked = 0;
+ frame->fin = fin;
+
+ return frame;
+}
+
+
+static ngx_inline ngx_int_t
+ngx_http_spdy_filter_send(ngx_connection_t *fc, ngx_http_spdy_stream_t *stream)
+{
+ if (ngx_http_spdy_send_output_queue(stream->connection) == NGX_ERROR) {
+ fc->error = 1;
+ return NGX_ERROR;
+ }
+
+ if (stream->waiting) {
+ fc->buffered |= NGX_SPDY_WRITE_BUFFERED;
+ fc->write->delayed = 1;
+ return NGX_AGAIN;
+ }
+
+ fc->buffered &= ~NGX_SPDY_WRITE_BUFFERED;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_syn_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_buf_t *buf;
+ ngx_http_spdy_stream_t *stream;
+
+ buf = frame->first->buf;
+
+ if (buf->pos != buf->last) {
+ return NGX_AGAIN;
+ }
+
+ stream = frame->stream;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy:%ui SYN_REPLY frame %p was sent", stream->id, frame);
+
+ ngx_free_chain(stream->request->pool, frame->first);
+
+ ngx_http_spdy_handle_frame(stream, frame);
+
+ ngx_http_spdy_handle_stream(sc, stream);
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_data_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_chain_t *cl, *ln;
+ ngx_http_spdy_stream_t *stream;
+
+ stream = frame->stream;
+
+ cl = frame->first;
+
+ if (cl->buf->tag == (ngx_buf_tag_t) &ngx_http_spdy_filter_module) {
+
+ if (cl->buf->pos != cl->buf->last) {
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy:%ui DATA frame %p was sent partially",
+ stream->id, frame);
+
+ return NGX_AGAIN;
+ }
+
+ ln = cl->next;
+
+ cl->next = stream->free_data_headers;
+ stream->free_data_headers = cl;
+
+ if (cl == frame->last) {
+ goto done;
+ }
+
+ cl = ln;
+ }
+
+ for ( ;; ) {
+ if (ngx_buf_size(cl->buf) != 0) {
+
+ if (cl != frame->first) {
+ frame->first = cl;
+ ngx_http_spdy_handle_stream(sc, stream);
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy:%ui DATA frame %p was sent partially",
+ stream->id, frame);
+
+ return NGX_AGAIN;
+ }
+
+ ln = cl->next;
+
+ ngx_free_chain(stream->request->pool, cl);
+
+ if (cl == frame->last) {
+ goto done;
+ }
+
+ cl = ln;
+ }
+
+done:
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy:%ui DATA frame %p was sent", stream->id, frame);
+
+ stream->request->header_size += NGX_SPDY_FRAME_HEADER_SIZE;
+
+ ngx_http_spdy_handle_frame(stream, frame);
+
+ ngx_http_spdy_handle_stream(sc, stream);
+
+ return NGX_OK;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_handle_frame(ngx_http_spdy_stream_t *stream,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_http_request_t *r;
+
+ r = stream->request;
+
+ r->connection->sent += frame->size;
+ r->blocked--;
+
+ if (frame->fin) {
+ stream->out_closed = 1;
+ }
+
+ frame->free = stream->free_frames;
+ stream->free_frames = frame;
+
+ stream->waiting--;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_handle_stream(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_stream_t *stream)
+{
+ ngx_connection_t *fc;
+
+ fc = stream->request->connection;
+
+ fc->write->delayed = 0;
+
+ if (stream->handled) {
+ return;
+ }
+
+ if (sc->blocked == 2) {
+ stream->handled = 1;
+
+ stream->next = sc->last_stream;
+ sc->last_stream = stream;
+ }
+}
+
+
+static void
+ngx_http_spdy_filter_cleanup(void *data)
+{
+ ngx_http_spdy_stream_t *stream = data;
+
+ ngx_http_request_t *r;
+ ngx_http_spdy_out_frame_t *frame, **fn;
+
+ if (stream->waiting == 0) {
+ return;
+ }
+
+ r = stream->request;
+
+ fn = &stream->connection->last_out;
+
+ for ( ;; ) {
+ frame = *fn;
+
+ if (frame == NULL) {
+ break;
+ }
+
+ if (frame->stream == stream && !frame->blocked) {
+
+ stream->waiting--;
+ r->blocked--;
+
+ *fn = frame->next;
+ continue;
+ }
+
+ fn = &frame->next;
+ }
+}
+
+
+static ngx_int_t
+ngx_http_spdy_filter_init(ngx_conf_t *cf)
+{
+ ngx_http_next_header_filter = ngx_http_top_header_filter;
+ ngx_http_top_header_filter = ngx_http_spdy_header_filter;
+
+ ngx_http_next_body_filter = ngx_http_top_body_filter;
+ ngx_http_top_body_filter = ngx_http_spdy_body_filter;
+
+ return NGX_OK;
+}
diff --git a/src/http/ngx_http_spdy_module.c b/src/http/ngx_http_spdy_module.c
new file mode 100644
index 000000000..7f02a18ca
--- /dev/null
+++ b/src/http/ngx_http_spdy_module.c
@@ -0,0 +1,351 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_spdy_module.h>
+
+
+static ngx_int_t ngx_http_spdy_add_variables(ngx_conf_t *cf);
+
+static ngx_int_t ngx_http_spdy_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data);
+static ngx_int_t ngx_http_spdy_request_priority_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data);
+
+static ngx_int_t ngx_http_spdy_module_init(ngx_cycle_t *cycle);
+
+static void *ngx_http_spdy_create_main_conf(ngx_conf_t *cf);
+static char *ngx_http_spdy_init_main_conf(ngx_conf_t *cf, void *conf);
+
+static void *ngx_http_spdy_create_srv_conf(ngx_conf_t *cf);
+static char *ngx_http_spdy_merge_srv_conf(ngx_conf_t *cf, void *parent,
+ void *child);
+
+static char *ngx_http_spdy_recv_buffer_size(ngx_conf_t *cf, void *post,
+ void *data);
+static char *ngx_http_spdy_pool_size(ngx_conf_t *cf, void *post, void *data);
+static char *ngx_http_spdy_streams_index_mask(ngx_conf_t *cf, void *post,
+ void *data);
+
+
+static ngx_conf_num_bounds_t ngx_http_spdy_headers_comp_bounds = {
+ ngx_conf_check_num_bounds, 0, 9
+};
+
+static ngx_conf_post_t ngx_http_spdy_recv_buffer_size_post =
+ { ngx_http_spdy_recv_buffer_size };
+static ngx_conf_post_t ngx_http_spdy_pool_size_post =
+ { ngx_http_spdy_pool_size };
+static ngx_conf_post_t ngx_http_spdy_streams_index_mask_post =
+ { ngx_http_spdy_streams_index_mask };
+
+
+static ngx_command_t ngx_http_spdy_commands[] = {
+
+ { ngx_string("spdy_recv_buffer_size"),
+ NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_size_slot,
+ NGX_HTTP_MAIN_CONF_OFFSET,
+ offsetof(ngx_http_spdy_main_conf_t, recv_buffer_size),
+ &ngx_http_spdy_recv_buffer_size_post },
+
+ { ngx_string("spdy_pool_size"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_size_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, pool_size),
+ &ngx_http_spdy_pool_size_post },
+
+ { ngx_string("spdy_max_concurrent_streams"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, concurrent_streams),
+ NULL },
+
+ { ngx_string("spdy_streams_index_size"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, streams_index_mask),
+ &ngx_http_spdy_streams_index_mask_post },
+
+ { ngx_string("spdy_recv_timeout"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_msec_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, recv_timeout),
+ NULL },
+
+ { ngx_string("spdy_keepalive_timeout"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_msec_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, keepalive_timeout),
+ NULL },
+
+ { ngx_string("spdy_headers_comp"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ NGX_HTTP_SRV_CONF_OFFSET,
+ offsetof(ngx_http_spdy_srv_conf_t, headers_comp),
+ &ngx_http_spdy_headers_comp_bounds },
+
+ ngx_null_command
+};
+
+
+static ngx_http_module_t ngx_http_spdy_module_ctx = {
+ ngx_http_spdy_add_variables, /* preconfiguration */
+ NULL, /* postconfiguration */
+
+ ngx_http_spdy_create_main_conf, /* create main configuration */
+ ngx_http_spdy_init_main_conf, /* init main configuration */
+
+ ngx_http_spdy_create_srv_conf, /* create server configuration */
+ ngx_http_spdy_merge_srv_conf, /* merge server configuration */
+
+ NULL, /* create location configuration */
+ NULL /* merge location configuration */
+};
+
+
+ngx_module_t ngx_http_spdy_module = {
+ NGX_MODULE_V1,
+ &ngx_http_spdy_module_ctx, /* module context */
+ ngx_http_spdy_commands, /* module directives */
+ NGX_HTTP_MODULE, /* module type */
+ NULL, /* init master */
+ ngx_http_spdy_module_init, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_http_variable_t ngx_http_spdy_vars[] = {
+
+ { ngx_string("spdy"), NULL,
+ ngx_http_spdy_variable, 0, 0, 0 },
+
+ { ngx_string("spdy_request_priority"), NULL,
+ ngx_http_spdy_request_priority_variable, 0, 0, 0 },
+
+ { ngx_null_string, NULL, NULL, 0, 0, 0 }
+};
+
+
+static ngx_int_t
+ngx_http_spdy_add_variables(ngx_conf_t *cf)
+{
+ ngx_http_variable_t *var, *v;
+
+ for (v = ngx_http_spdy_vars; v->name.len; v++) {
+ var = ngx_http_add_variable(cf, &v->name, v->flags);
+ if (var == NULL) {
+ return NGX_ERROR;
+ }
+
+ var->get_handler = v->get_handler;
+ var->data = v->data;
+ }
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data)
+{
+ if (r->spdy_stream) {
+ v->len = 1;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+ v->data = (u_char *) "2";
+
+ return NGX_OK;
+ }
+
+ *v = ngx_http_variable_null_value;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_request_priority_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data)
+{
+ if (r->spdy_stream) {
+ v->len = 1;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+
+ v->data = ngx_pnalloc(r->pool, 1);
+ if (v->data == NULL) {
+ return NGX_ERROR;
+ }
+
+ v->data[0] = '0' + (u_char) r->spdy_stream->priority;
+
+ return NGX_OK;
+ }
+
+ *v = ngx_http_variable_null_value;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_module_init(ngx_cycle_t *cycle)
+{
+ ngx_http_spdy_request_headers_init();
+
+ return NGX_OK;
+}
+
+
+static void *
+ngx_http_spdy_create_main_conf(ngx_conf_t *cf)
+{
+ ngx_http_spdy_main_conf_t *smcf;
+
+ smcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_spdy_main_conf_t));
+ if (smcf == NULL) {
+ return NULL;
+ }
+
+ smcf->recv_buffer_size = NGX_CONF_UNSET_SIZE;
+
+ return smcf;
+}
+
+
+static char *
+ngx_http_spdy_init_main_conf(ngx_conf_t *cf, void *conf)
+{
+ ngx_http_spdy_main_conf_t *smcf = conf;
+
+ if (smcf->recv_buffer_size == NGX_CONF_UNSET_SIZE) {
+ smcf->recv_buffer_size = 256 * 1024;
+ }
+
+ return NGX_CONF_OK;
+}
+
+
+static void *
+ngx_http_spdy_create_srv_conf(ngx_conf_t *cf)
+{
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_spdy_srv_conf_t));
+ if (sscf == NULL) {
+ return NULL;
+ }
+
+ sscf->pool_size = NGX_CONF_UNSET_SIZE;
+
+ sscf->concurrent_streams = NGX_CONF_UNSET_UINT;
+ sscf->streams_index_mask = NGX_CONF_UNSET_UINT;
+
+ sscf->recv_timeout = NGX_CONF_UNSET_MSEC;
+ sscf->keepalive_timeout = NGX_CONF_UNSET_MSEC;
+
+ sscf->headers_comp = NGX_CONF_UNSET;
+
+ return sscf;
+}
+
+
+static char *
+ngx_http_spdy_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
+{
+ ngx_http_spdy_srv_conf_t *prev = parent;
+ ngx_http_spdy_srv_conf_t *conf = child;
+
+ ngx_conf_merge_size_value(conf->pool_size, prev->pool_size, 4096);
+
+ ngx_conf_merge_uint_value(conf->concurrent_streams,
+ prev->concurrent_streams, 100);
+
+ ngx_conf_merge_uint_value(conf->streams_index_mask,
+ prev->streams_index_mask, 32 - 1);
+
+ ngx_conf_merge_msec_value(conf->recv_timeout,
+ prev->recv_timeout, 30000);
+ ngx_conf_merge_msec_value(conf->keepalive_timeout,
+ prev->keepalive_timeout, 180000);
+
+ ngx_conf_merge_value(conf->headers_comp, prev->headers_comp, 0);
+
+ return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_recv_buffer_size(ngx_conf_t *cf, void *post, void *data)
+{
+ size_t *sp = data;
+
+ if (*sp <= 2 * NGX_SPDY_STATE_BUFFER_SIZE) {
+ return "value is too small";
+ }
+
+ return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_pool_size(ngx_conf_t *cf, void *post, void *data)
+{
+ size_t *sp = data;
+
+ if (*sp < NGX_MIN_POOL_SIZE) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "the pool size must be no less than %uz",
+ NGX_MIN_POOL_SIZE);
+ return NGX_CONF_ERROR;
+ }
+
+ if (*sp % NGX_POOL_ALIGNMENT) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "the pool size must be a multiple of %uz",
+ NGX_POOL_ALIGNMENT);
+ return NGX_CONF_ERROR;
+ }
+
+ return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_streams_index_mask(ngx_conf_t *cf, void *post, void *data)
+{
+ ngx_uint_t *np = data;
+
+ ngx_uint_t mask;
+
+ mask = *np - 1;
+
+ if (*np == 0 || (*np & mask)) {
+ return "must be a power of two";
+ }
+
+ *np = mask;
+
+ return NGX_CONF_OK;
+}
diff --git a/src/http/ngx_http_spdy_module.h b/src/http/ngx_http_spdy_module.h
new file mode 100644
index 000000000..97a7a13a6
--- /dev/null
+++ b/src/http/ngx_http_spdy_module.h
@@ -0,0 +1,36 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#ifndef _NGX_HTTP_SPDY_MODULE_H_INCLUDED_
+#define _NGX_HTTP_SPDY_MODULE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+typedef struct {
+ size_t recv_buffer_size;
+ u_char *recv_buffer;
+} ngx_http_spdy_main_conf_t;
+
+
+typedef struct {
+ size_t pool_size;
+ ngx_uint_t concurrent_streams;
+ ngx_uint_t streams_index_mask;
+ ngx_msec_t recv_timeout;
+ ngx_msec_t keepalive_timeout;
+ ngx_int_t headers_comp;
+} ngx_http_spdy_srv_conf_t;
+
+
+extern ngx_module_t ngx_http_spdy_module;
+
+
+#endif /* _NGX_HTTP_SPDY_MODULE_H_INCLUDED_ */
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index e9ea72c46..5cd42fe6c 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -440,6 +440,13 @@ ngx_http_upstream_init(ngx_http_request_t *r)
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
"http init upstream, client timer: %d", c->read->timer_set);
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ ngx_http_upstream_init_request(r);
+ return;
+ }
+#endif
+
if (c->read->timer_set) {
ngx_del_timer(c->read);
}
@@ -1018,6 +1025,12 @@ ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
return;
}
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ return;
+ }
+#endif
+
#if (NGX_HAVE_KQUEUE)
if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-12 18:20:30 +0300