libwebsockets/test-server/test-server-dumb-increment.c

94 lines
2.7 KiB
C

/*
* libwebsockets-test-server - libwebsockets test implementation
*
* 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.
*
* The test apps 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 "test-server.h"
/* dumb_increment protocol */
int
callback_dumb_increment(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len)
{
unsigned char buf[LWS_PRE + 512];
struct per_session_data__dumb_increment *pss =
(struct per_session_data__dumb_increment *)user;
unsigned char *p = &buf[LWS_PRE];
int n, m;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
pss->number = 0;
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
n = sprintf((char *)p, "%d", pss->number++);
m = lws_write(wsi, p, n, LWS_WRITE_TEXT);
if (m < n) {
lwsl_err("ERROR %d writing to di socket\n", n);
return -1;
}
if (close_testing && pss->number == 50) {
lwsl_info("close tesing limit, closing\n");
return -1;
}
break;
case LWS_CALLBACK_RECEIVE:
if (len < 6)
break;
if (strcmp((const char *)in, "reset\n") == 0)
pss->number = 0;
if (strcmp((const char *)in, "closeme\n") == 0) {
lwsl_notice("dumb_inc: closing as requested\n");
lws_close_reason(wsi, LWS_CLOSE_STATUS_GOINGAWAY,
(unsigned char *)"seeya", 5);
return -1;
}
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info(wsi);
/* you could return non-zero here and kill the connection */
break;
/*
* this just demonstrates how to handle
* LWS_CALLBACK_WS_PEER_INITIATED_CLOSE and extract the peer's close
* code and auxiliary data. You can just not handle it if you don't
* have a use for this.
*/
case LWS_CALLBACK_WS_PEER_INITIATED_CLOSE:
lwsl_notice("LWS_CALLBACK_WS_PEER_INITIATED_CLOSE: len %lu\n",
(unsigned long)len);
for (n = 0; n < (int)len; n++)
lwsl_notice(" %d: 0x%02X\n", n,
((unsigned char *)in)[n]);
break;
default:
break;
}
return 0;
}