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/*
* nullplug.c: provide a null implementation of the Plug vtable which
* ignores all calls. Occasionally useful in cases where we want to
* make a network connection just to see if it works, but not do
* anything with it afterwards except close it again.
*/
#include "putty.h"
void nullplug_log(Plug *plug, PlugLogType type, SockAddr *addr,
int port, const char *err_msg, int err_code)
{
}
void nullplug_closing(Plug *plug, PlugCloseType type, const char *error_msg)
{
}
void nullplug_receive(Plug *plug, int urgent, const char *data, size_t len)
{
}
void nullplug_sent(Plug *plug, size_t bufsize)
{
}
static const PlugVtable nullplug_plugvt = {
.log = nullplug_log,
.closing = nullplug_closing,
.receive = nullplug_receive,
.sent = nullplug_sent,
};
static Plug nullplug_plug = { &nullplug_plugvt };
/*
* There's a singleton instance of nullplug, because it's not
* interesting enough to worry about making more than one of them.
*/
Plug *const nullplug = &nullplug_plug;
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