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#import "platform/http_thread_apple.h"
#include "platform/http_request.hpp"
#import "platform/http_session_manager.h"
#include "platform/http_thread_callback.hpp"
#include "platform/platform.hpp"
#include "base/logging.hpp"
#include "base/macros.hpp"
#define TIMEOUT_IN_SECONDS 60.0
@interface HttpThreadImpl ()<NSURLSessionDataDelegate>
{
downloader::IHttpThreadCallback * m_callback;
NSURLSessionDataTask * m_dataTask;
int64_t m_begRange;
int64_t m_endRange;
int64_t m_downloadedBytes;
int64_t m_expectedSize;
BOOL m_cancelRequested;
}
@end
@implementation HttpThreadImpl
#ifdef OMIM_OS_IPHONE
static id<DownloadIndicatorProtocol> downloadIndicator = nil;
+ (void)setDownloadIndicatorProtocol:(id<DownloadIndicatorProtocol>)indicator
{
downloadIndicator = indicator;
}
#endif
- (void)dealloc
{
LOG(LDEBUG, ("ID:", [self hash], "Connection is destroyed"));
[m_dataTask cancel];
#ifdef OMIM_OS_IPHONE
[downloadIndicator enableStandby];
[downloadIndicator disableDownloadIndicator];
#endif
}
- (void)cancel
{
[m_dataTask cancel];
m_cancelRequested = true;
}
- (instancetype)initWithURL:(string const &)url
callback:(downloader::IHttpThreadCallback &)cb
begRange:(int64_t)beg
endRange:(int64_t)end
expectedSize:(int64_t)size
postBody:(string const &)pb
{
self = [super init];
m_callback = &cb;
m_begRange = beg;
m_endRange = end;
m_downloadedBytes = 0;
m_expectedSize = size;
NSMutableURLRequest * request =
[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@(url.c_str())]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:TIMEOUT_IN_SECONDS];
// use Range header only if we don't download whole file from start
if (!(beg == 0 && end < 0))
{
NSString * val;
if (end > 0)
{
LOG(LDEBUG, (url, "downloading range [", beg, ",", end, "]"));
val = [[NSString alloc] initWithFormat: @"bytes=%qi-%qi", beg, end];
}
else
{
LOG(LDEBUG, (url, "resuming download from position", beg));
val = [[NSString alloc] initWithFormat: @"bytes=%qi-", beg];
}
[request addValue:val forHTTPHeaderField:@"Range"];
}
if (!pb.empty())
{
NSData * postData = [NSData dataWithBytes:pb.data() length:pb.size()];
[request setHTTPBody:postData];
[request setHTTPMethod:@"POST"];
[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
}
// set user-agent with unique client id only for mapswithme requests
if (url.find("mapswithme.com") != string::npos)
{
static string const uid = GetPlatform().UniqueClientId();
[request addValue:@(uid.c_str()) forHTTPHeaderField:@"User-Agent"];
}
#ifdef OMIM_OS_IPHONE
[downloadIndicator disableStandby];
[downloadIndicator enableDownloadIndicator];
#endif
// create the task with the request and start loading the data
m_dataTask = [[HttpSessionManager sharedManager] dataTaskWithRequest:request
delegate:self
completionHandler:nil];
if (m_dataTask)
{
[m_dataTask resume];
LOG(LDEBUG, ("ID:", [self hash], "Starting data task for", url));
}
else
{
LOG(LERROR, ("Can't create data task for", url));
return nil;
}
return self;
}
/// We cancel and don't support any redirects to avoid data corruption
/// @TODO Display content to user - router is redirecting us somewhere
- (void)URLSession:(NSURLSession *)session
task:(NSURLSessionTask *)task
willPerformHTTPRedirection:(NSHTTPURLResponse *)response
newRequest:(NSURLRequest *)request
completionHandler:(void (^)(NSURLRequest *))completionHandler
{
LOG(LWARNING, ("Canceling because of redirect from", response.URL.absoluteString.UTF8String, "to",
request.URL.absoluteString.UTF8String));
completionHandler(nil);
m_callback->OnFinish(static_cast<NSHTTPURLResponse *>(response).statusCode, m_begRange,
m_endRange);
}
/// @return -1 if can't decode
+ (int64_t)getContentRange:(NSDictionary *)httpHeader
{
if (NSString * cr = [httpHeader valueForKey:@"Content-Range"])
{
NSArray * arr = [cr componentsSeparatedByString:@"/"];
if ([arr count])
return [(NSString *)[arr objectAtIndex:[arr count] - 1] longLongValue];
}
return -1;
}
- (void)URLSession:(NSURLSession *)session
dataTask:(NSURLSessionDataTask *)dataTask
didReceiveResponse:(NSURLResponse *)response
completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))completionHandler
{
// This method is called when the server has determined that it
// has enough information to create the NSURLResponse.
// check if this is OK (not a 404 or the like)
if ([response isKindOfClass:[NSHTTPURLResponse class]])
{
NSInteger const statusCode = [(NSHTTPURLResponse *)response statusCode];
LOG(LDEBUG, ("Got response with status code", statusCode));
// When we didn't ask for chunks, code should be 200
// When we asked for a chunk, code should be 206
bool const isChunk = !(m_begRange == 0 && m_endRange < 0);
if ((isChunk && statusCode != 206) || (!isChunk && statusCode != 200))
{
LOG(LWARNING, ("Received invalid HTTP status code, canceling download", statusCode));
completionHandler(NSURLSessionResponseCancel);
m_callback->OnFinish(statusCode, m_begRange, m_endRange);
return;
}
else if (m_expectedSize > 0)
{
// get full file expected size from Content-Range header
int64_t sizeOnServer = [HttpThreadImpl getContentRange:[(NSHTTPURLResponse *)response allHeaderFields]];
// if it's absent, use Content-Length instead
if (sizeOnServer < 0)
sizeOnServer = [response expectedContentLength];
// We should always check returned size, even if it's invalid (-1)
if (m_expectedSize != sizeOnServer)
{
LOG(LWARNING, ("Canceling download - server replied with invalid size", sizeOnServer,
"!=", m_expectedSize));
completionHandler(NSURLSessionResponseCancel);
m_callback->OnFinish(downloader::non_http_error_code::kInconsistentFileSize, m_begRange, m_endRange);
return;
}
}
completionHandler(NSURLSessionResponseAllow);
}
else
{
// In theory, we should never be here.
ASSERT(false, ("Invalid non-http response, aborting request"));
completionHandler(NSURLSessionResponseCancel);
m_callback->OnFinish(downloader::non_http_error_code::kNonHttpResponse, m_begRange, m_endRange);
}
}
- (void)URLSession:(NSURLSession *)session
dataTask:(NSURLSessionDataTask *)dataTask
didReceiveData:(NSData *)data
{
int64_t const length = [data length];
m_downloadedBytes += length;
if(!m_callback->OnWrite(m_begRange + m_downloadedBytes - length, [data bytes], length))
{
[m_dataTask cancel];
m_callback->OnFinish(downloader::non_http_error_code::kWriteException, m_begRange, m_endRange);
}
}
- (void)URLSession:(NSURLSession *)session
task:(NSURLSessionTask *)task
didCompleteWithError:(NSError *)error
{
if (error.code == NSURLErrorCancelled || m_cancelRequested)
return;
if (error)
m_callback->OnFinish([error code], m_begRange, m_endRange);
else
m_callback->OnFinish(200, m_begRange, m_endRange);
}
@end
class HttpThread
{
public:
HttpThread(HttpThreadImpl * request)
: m_request(request)
{}
HttpThreadImpl * m_request;
};
///////////////////////////////////////////////////////////////////////////////////////
namespace downloader
{
HttpThread * CreateNativeHttpThread(string const & url,
downloader::IHttpThreadCallback & cb,
int64_t beg,
int64_t end,
int64_t size,
string const & pb)
{
HttpThreadImpl * request = [[HttpThreadImpl alloc] initWithURL:url callback:cb begRange:beg endRange:end expectedSize:size postBody:pb];
return new HttpThread(request);
}
void DeleteNativeHttpThread(HttpThread * request)
{
[request->m_request cancel];
delete request;
}
} // namespace downloader
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