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add function to manually setup proxy. Useful on iOS where getenv doesn't return proxy settings

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This commit is contained in:
shys 2013-10-24 14:27:50 +02:00
parent 8b2d6f0ee7
commit 9c8200c9c9
2 changed files with 59 additions and 0 deletions
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56
lib/libwebsockets.c
View file

@ -2268,6 +2268,62 @@ bail:
return NULL;
}
/**
* libwebsocket_set_proxy() - Setups proxy to libwebsocket_context.
* @context: pointer to struct libwebsocket_context you want set proxy to
* @proxy: pointer to c string containing proxy in format address:port
*
* Returns 0 if proxy string was parsed and proxy was setup.
* Returns -1 if @proxy is NULL or has incorrect format.
*
* IMPORTANT! You should call this function right after creation of the libwebsocket_context
* and before call to connect. If you call this function after connect behavior is undefined.
* This function will override proxy settings made on libwebsocket_context creation with genenv() call.
*/
LWS_VISIBLE int
libwebsocket_set_proxy(struct libwebsocket_context *context, const char *proxy)
{
int ret = -1;
if (proxy == NULL) {
return ret;
}
char *p = NULL;
char *storage = (char *)malloc(strlen(proxy)+1);
if (storage == NULL) {
lwsl_err("couldn't allocate memory to copy proxy string\n");
return ret;
}
p = storage;
if (p) {
strcpy(p, proxy);
strncpy(context->http_proxy_address, p,
sizeof(context->http_proxy_address) - 1);
context->http_proxy_address[
sizeof(context->http_proxy_address) - 1] = '\0';
p = strchr(context->http_proxy_address, ':');
if (p == NULL) {
lwsl_err("http_proxy needs to be ads:port\n");
return ret;
}
*p = '\0';
context->http_proxy_port = atoi(p + 1);
lwsl_notice(" Proxy %s:%u\n",
context->http_proxy_address,
context->http_proxy_port);
free(storage);
ret = 0;
}
return ret;
}
/**
* libwebsockets_get_protocol() - Returns a protocol pointer from a websocket
* connection.

3
lib/libwebsockets.h
View file

@ -830,6 +830,9 @@ lwsl_emit_syslog(int level, const char *line);
LWS_VISIBLE LWS_EXTERN struct libwebsocket_context *
libwebsocket_create_context(struct lws_context_creation_info *info);
LWS_VISIBLE LWS_EXTERN int
libwebsocket_set_proxy(struct libwebsocket_context *context, const char *proxy);
LWS_VISIBLE LWS_EXTERN void
libwebsocket_context_destroy(struct libwebsocket_context *context);