fix-hostname-to-be-server-name--allow-switches-in-any-order.patch
[platform/upstream/libwebsockets.git] / test-server / test-client.c
1 /*
2  * libwebsockets-test-client - libwebsockets test implementation
3  *
4  * Copyright (C) 2011 Andy Green <andy@warmcat.com>
5  *
6  *  This library is free software; you can redistribute it and/or
7  *  modify it under the terms of the GNU Lesser General Public
8  *  License as published by the Free Software Foundation:
9  *  version 2.1 of the License.
10  *
11  *  This library is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  *  Lesser General Public License for more details.
15  *
16  *  You should have received a copy of the GNU Lesser General Public
17  *  License along with this library; if not, write to the Free Software
18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
19  *  MA  02110-1301  USA
20  */
21
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <getopt.h>
26 #include <string.h>
27
28 #include "../lib/libwebsockets.h"
29 #include <poll.h>
30
31 static unsigned int opts;
32
33 /*
34  * This demo shows how to connect multiple websockets simultaneously to a
35  * websocket server (there is no restriction on their having to be the same
36  * server just it simplifies the demo).
37  *
38  *  dumb-increment-protocol:  we connect to the server and print the number
39  *                              we are given
40  *
41  *  lws-mirror-protocol: draws random circles, which are mirrored on to every
42  *                              client (see them being drawn in every browser
43  *                              session also using the test server)
44  */
45
46 enum demo_protocols {
47
48         PROTOCOL_DUMB_INCREMENT,
49         PROTOCOL_LWS_MIRROR,
50
51         /* always last */
52         DEMO_PROTOCOL_COUNT
53 };
54
55
56 /* dumb_increment protocol */
57
58 static int
59 callback_dumb_increment(struct libwebsocket *wsi,
60                         enum libwebsocket_callback_reasons reason,
61                                                void *user, void *in, size_t len)
62 {
63         switch (reason) {
64
65         case LWS_CALLBACK_CLIENT_RECEIVE:
66                 ((char *)in)[len] = '\0';
67                 fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in);
68                 break;
69
70         default:
71                 break;
72         }
73
74         return 0;
75 }
76
77
78 /* lws-mirror_protocol */
79
80
81 static int
82 callback_lws_mirror(struct libwebsocket *wsi,
83                         enum libwebsocket_callback_reasons reason,
84                                                void *user, void *in, size_t len)
85 {
86         unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 4096 +
87                                                   LWS_SEND_BUFFER_POST_PADDING];
88         int l;
89
90         switch (reason) {
91
92         case LWS_CALLBACK_CLIENT_ESTABLISHED:
93
94                 /*
95                  * start the ball rolling,
96                  * LWS_CALLBACK_CLIENT_WRITEABLE will come next service
97                  */
98
99                 libwebsocket_callback_on_writable(wsi);
100                 break;
101
102         case LWS_CALLBACK_CLIENT_RECEIVE:
103 /*              fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in); */
104                 break;
105
106         case LWS_CALLBACK_CLIENT_WRITEABLE:
107
108                 l = sprintf((char *)&buf[LWS_SEND_BUFFER_PRE_PADDING],
109                                         "c #%06X %d %d %d;",
110                                         (int)random() & 0xffffff,
111                                         (int)random() % 500,
112                                         (int)random() % 250,
113                                         (int)random() % 24);
114
115                 libwebsocket_write(wsi,
116                    &buf[LWS_SEND_BUFFER_PRE_PADDING], l, opts | LWS_WRITE_TEXT);
117
118                 /* get notified as soon as we can write again */
119
120                 libwebsocket_callback_on_writable(wsi);
121
122                 /*
123                  * without at least this delay, we choke the browser
124                  * and the connection stalls, despite we now take care about
125                  * flow control
126                  */
127
128                 usleep(200);
129                 break;
130
131         default:
132                 break;
133         }
134
135         return 0;
136 }
137
138
139 /* list of supported protocols and callbacks */
140
141 static struct libwebsocket_protocols protocols[] = {
142
143         [PROTOCOL_DUMB_INCREMENT] = {
144                 .name = "dumb-increment-protocol",
145                 .callback = callback_dumb_increment,
146         },
147         [PROTOCOL_LWS_MIRROR] = {
148                 .name = "lws-mirror-protocol",
149                 .callback = callback_lws_mirror,
150         },
151         [DEMO_PROTOCOL_COUNT] = {  /* end of list */
152                 .callback = NULL
153         }
154 };
155
156 static struct option options[] = {
157         { "help",       no_argument,            NULL, 'h' },
158         { "port",       required_argument,      NULL, 'p' },
159         { "ssl",        no_argument,            NULL, 's' },
160         { "killmask",   no_argument,            NULL, 'k' },
161         { NULL, 0, 0, 0 }
162 };
163
164
165 int main(int argc, char **argv)
166 {
167         int n = 0;
168         int port = 7681;
169         int use_ssl = 0;
170         struct libwebsocket_context *context;
171         const char *address;
172         struct libwebsocket *wsi_dumb;
173         struct libwebsocket *wsi_mirror;
174
175         fprintf(stderr, "libwebsockets test client\n"
176                         "(C) Copyright 2010 Andy Green <andy@warmcat.com> "
177                                                     "licensed under LGPL2.1\n");
178
179         if (argc < 2)
180                 goto usage;
181
182         optind++;
183
184         while (n >= 0) {
185                 n = getopt_long(argc, argv, "khsp:", options, NULL);
186                 if (n < 0)
187                         continue;
188                 switch (n) {
189                 case 's':
190                         use_ssl = 2; /* 2 = allow selfsigned */
191                         break;
192                 case 'p':
193                         port = atoi(optarg);
194                         break;
195                 case 'k':
196                         opts = LWS_WRITE_CLIENT_IGNORE_XOR_MASK;
197                         break;
198                 case 'h':
199                         goto usage;
200                 }
201         }
202
203         if (optind >= argc)
204                 goto usage;
205
206         address = argv[optind];
207
208         /*
209          * create the websockets context.  This tracks open connections and
210          * knows how to route any traffic and which protocol version to use,
211          * and if each connection is client or server side.
212          *
213          * For this client-only demo, we tell it to not listen on any port.
214          */
215
216         context = libwebsocket_create_context(CONTEXT_PORT_NO_LISTEN,
217                                               protocols, NULL, NULL, -1, -1, 0);
218         if (context == NULL) {
219                 fprintf(stderr, "Creating libwebsocket context failed\n");
220                 return 1;
221         }
222
223
224         /* create a client websocket using dumb increment protocol */
225
226         wsi_dumb = libwebsocket_client_connect(context, address, port, use_ssl,
227                         "/", argv[optind], argv[optind],
228                                        protocols[PROTOCOL_DUMB_INCREMENT].name);
229
230         if (wsi_dumb == NULL) {
231                 fprintf(stderr, "libwebsocket dumb connect failed\n");
232                 return -1;
233         }
234
235         /* create a client websocket using mirror protocol */
236
237         wsi_mirror = libwebsocket_client_connect(context, address, port,
238              use_ssl,  "/", argv[optind], argv[optind],
239                                        protocols[PROTOCOL_LWS_MIRROR].name);
240
241         if (wsi_mirror == NULL) {
242                 fprintf(stderr, "libwebsocket dumb connect failed\n");
243                 return -1;
244         }
245
246         fprintf(stderr, "Websocket connections opened\n");
247
248         /*
249          * sit there servicing the websocket context to handle incoming
250          * packets, and drawing random circles on the mirror protocol websocket
251          */
252
253         n = 0;
254         while (n >= 0)
255                 n = libwebsocket_service(context, 1000);
256
257         libwebsocket_context_destroy(context);
258
259         return 0;
260
261 usage:
262         fprintf(stderr, "Usage: libwebsockets-test-client "
263                                              "<server address> [--port=<p>] "
264                                              "[--ssl]\n");
265         return 1;
266 }