--- /dev/null
+/*
+ * ws protocol handler plugin for "client_loopback_test"
+ *
+ * Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
+ *
+ * This file is made available under the Creative Commons CC0 1.0
+ * Universal Public Domain Dedication.
+ *
+ * The person who associated a work with this deed has dedicated
+ * the work to the public domain by waiving all of his or her rights
+ * to the work worldwide under copyright law, including all related
+ * and neighboring rights, to the extent allowed by law. You can copy,
+ * modify, distribute and perform the work, even for commercial purposes,
+ * all without asking permission.
+ *
+ * These test plugins are intended to be adapted for use in your code, which
+ * may be proprietary. So unlike the library itself, they are licensed
+ * Public Domain.
+ */
+#include "../lib/libwebsockets.h"
+#include <string.h>
+
+struct per_session_data__client_loopback_test {
+ struct lws *wsi;
+};
+
+/*
+ * This is a bit fiddly...
+ *
+ * 0) If you want the wss:// test to work, make sure the vhost is marked with
+ * enable-client-ssl if using lwsws, or call lws_init_vhost_client_ssl() on
+ * the vhost if you're doing it by hand.
+ *
+ * 1) enable the protocol on a vhost
+ *
+ * "ws-protocols": [{
+ * "client-loopback-test": {
+ * "status": "ok"
+ * }, ...
+ *
+ * the vhost should listen on 80 (ws://) or 443 (wss://)
+ *
+ * 2) mount the http part of the test one level down on the same vhost, eg
+ * {
+ * "mountpoint": "/c",
+ * "origin": "callback://client-loopback-test"
+ * }
+ *
+ * 3) Use a browser to visit the mountpoint with a URI attached for looping
+ * back, eg, if testing on localhost
+ *
+ * http://localhost/c/ws://localhost
+ * https://localhost/c/wss://localhost
+ *
+ * 4) The HTTP part of this test protocol will try to do the requested
+ * ws client connection, to the same test protocol on the same
+ * server.
+ */
+
+static int
+callback_client_loopback_test(struct lws *wsi, enum lws_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ struct lws_client_connect_info i;
+ struct per_session_data__client_loopback_test *pss =
+ (struct per_session_data__client_loopback_test *)user;
+ const char *p = (const char *)in;
+ char buf[100];
+ int n;
+
+ switch (reason) {
+
+ /* HTTP part */
+
+ case LWS_CALLBACK_HTTP:
+ if (len < 10)
+ return -1;
+
+ p++;
+ while (*p && *p != '/')
+ p++;
+ if (!*p) {
+ lws_return_http_status(wsi, 400, "Arg needs to be in format ws://xxx or wss://xxx");
+ return -1;
+ }
+ p++;
+
+ memset(&i, 0, sizeof(i));
+ i.context = lws_get_context(wsi);
+
+ // stacked /// get resolved to /
+
+ if (strncmp(p, "ws:/", 4) == 0) {
+ i.ssl_connection = 0;
+ i.port = 80;
+ p += 4;
+ } else
+ if (strncmp(p, "wss:/", 5) == 0) {
+ i.port = 443;
+ i.ssl_connection = 1;
+ p += 5;
+ } else {
+ sprintf(buf, "Arg %s is not in format ws://xxx or wss://xxx\n", p);
+ lws_return_http_status(wsi, 400, buf);
+ return -1;
+ }
+
+ i.address = p;
+ i.path = "";
+ i.host = p;
+ i.origin = p;
+ i.ietf_version_or_minus_one = -1;
+ i.protocol = "client-loopback-test";
+
+ pss->wsi = lws_client_connect_via_info(&i);
+ if (!pss->wsi)
+ lws_return_http_status(wsi, 401, "client-loopback-test: connect failed\n");
+ else {
+ lwsl_notice("client connection to %s:%d with ssl: %d started\n",
+ i.address, i.port, i.ssl_connection);
+ lws_return_http_status(wsi, 200, "OK");
+ }
+
+ /* either way, close the triggering http link */
+
+ return -1;
+
+ case LWS_CALLBACK_CLOSED_HTTP:
+ lwsl_notice("Http part closed\n");
+ break;
+
+ /* server part */
+
+ case LWS_CALLBACK_ESTABLISHED:
+ lwsl_notice("server part: LWS_CALLBACK_ESTABLISHED\n");
+ strcpy(buf + LWS_PRE, "Made it");
+ n = lws_write(wsi, (unsigned char *)buf + LWS_PRE,
+ 7, LWS_WRITE_TEXT);
+ if (n < 7)
+ return -1;
+ break;
+
+ /* client part */
+
+ case LWS_CALLBACK_CLIENT_ESTABLISHED:
+ lwsl_notice("Client connection established\n");
+ break;
+
+ case LWS_CALLBACK_CLIENT_RECEIVE:
+ strncpy(buf, in, sizeof(buf) - 1);
+ lwsl_notice("Client connection received %d from server '%s'\n", len, buf);
+
+ /* OK we are done with the client connection */
+ return -1;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const struct lws_protocols protocols[] = {
+ {
+ "client-loopback-test",
+ callback_client_loopback_test,
+ sizeof(struct per_session_data__client_loopback_test),
+ 1024, /* rx buf size must be >= permessage-deflate rx size */
+ },
+};
+
+LWS_VISIBLE int
+init_protocol_client_loopback_test(struct lws_context *context,
+ struct lws_plugin_capability *c)
+{
+ if (c->api_magic != LWS_PLUGIN_API_MAGIC) {
+ lwsl_err("Plugin API %d, library API %d", LWS_PLUGIN_API_MAGIC,
+ c->api_magic);
+ return 1;
+ }
+
+ c->protocols = protocols;
+ c->count_protocols = ARRAY_SIZE(protocols);
+ c->extensions = NULL;
+ c->count_extensions = 0;
+
+ return 0;
+}
+
+LWS_VISIBLE int
+destroy_protocol_client_loopback_test(struct lws_context *context)
+{
+ return 0;
+}