mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
c9731c5f17
This is a huge patch that should be a global NOP. For unix type platforms it enables -Wconversion to issue warnings (-> error) for all automatic casts that seem less than ideal but are normally concealed by the toolchain. This is things like passing an int to a size_t argument. Once enabled, I went through all args on my default build (which build most things) and tried to make the removed default cast explicit. With that approach it neither change nor bloat the code, since it compiles to whatever it was doing before, just with the casts made explicit... in a few cases I changed some length args from int to size_t but largely left the causes alone. From now on, new code that is relying on less than ideal casting will complain and nudge me to improve it by warnings.
261 lines
6.4 KiB
C
261 lines
6.4 KiB
C
/*
|
|
* libwebsockets-test-server - libwebsockets test implementation
|
|
*
|
|
* Written in 2010-2019 by 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.
|
|
*/
|
|
|
|
#if !defined (LWS_PLUGIN_STATIC)
|
|
#define LWS_DLL
|
|
#define LWS_INTERNAL
|
|
#include <libwebsockets.h>
|
|
#endif
|
|
|
|
#include <time.h>
|
|
#include <string.h>
|
|
#ifdef WIN32
|
|
#include <io.h>
|
|
#include <gettimeofday.h>
|
|
#endif
|
|
|
|
|
|
typedef enum {
|
|
WALK_NONE,
|
|
WALK_INITIAL,
|
|
WALK_LIST,
|
|
WALK_FINAL
|
|
} e_walk;
|
|
|
|
struct per_session_data__lws_status {
|
|
struct per_session_data__lws_status *next;
|
|
struct lws *wsi;
|
|
time_t time_est;
|
|
char user_agent[256];
|
|
|
|
e_walk walk;
|
|
struct per_session_data__lws_status *walk_next;
|
|
unsigned char subsequent:1;
|
|
unsigned char changed_partway:1;
|
|
unsigned char wss_over_h2:1;
|
|
};
|
|
|
|
struct per_vhost_data__lws_status {
|
|
struct per_session_data__lws_status *live_pss_list;
|
|
struct lws_context *context;
|
|
struct lws_vhost *vhost;
|
|
const struct lws_protocols *protocol;
|
|
int count_live_pss;
|
|
};
|
|
|
|
static void
|
|
trigger_resend(struct per_vhost_data__lws_status *vhd)
|
|
{
|
|
lws_start_foreach_ll(struct per_session_data__lws_status *, pss,
|
|
vhd->live_pss_list) {
|
|
if (pss->walk == WALK_NONE) {
|
|
pss->subsequent = 0;
|
|
pss->walk_next = vhd->live_pss_list;
|
|
pss->walk = WALK_INITIAL;
|
|
} else
|
|
pss->changed_partway = 1;
|
|
} lws_end_foreach_ll(pss, next);
|
|
|
|
lws_callback_on_writable_all_protocol(vhd->context, vhd->protocol);
|
|
}
|
|
|
|
/* lws-status protocol */
|
|
|
|
int
|
|
callback_lws_status(struct lws *wsi, enum lws_callback_reasons reason,
|
|
void *user, void *in, size_t len)
|
|
{
|
|
struct per_session_data__lws_status *pss =
|
|
(struct per_session_data__lws_status *)user;
|
|
struct per_vhost_data__lws_status *vhd =
|
|
(struct per_vhost_data__lws_status *)
|
|
lws_protocol_vh_priv_get(lws_get_vhost(wsi),
|
|
lws_get_protocol(wsi));
|
|
char buf[LWS_PRE + 384], ip[24], *start = buf + LWS_PRE - 1, *p = start,
|
|
*end = buf + sizeof(buf) - 1;
|
|
int n, m;
|
|
|
|
switch (reason) {
|
|
|
|
case LWS_CALLBACK_PROTOCOL_INIT:
|
|
vhd = lws_protocol_vh_priv_zalloc(lws_get_vhost(wsi),
|
|
lws_get_protocol(wsi),
|
|
sizeof(struct per_vhost_data__lws_status));
|
|
vhd->context = lws_get_context(wsi);
|
|
vhd->protocol = lws_get_protocol(wsi);
|
|
vhd->vhost = lws_get_vhost(wsi);
|
|
break;
|
|
|
|
case LWS_CALLBACK_ESTABLISHED:
|
|
|
|
/*
|
|
* This shows how to stage sending a single ws message in
|
|
* multiple fragments. In this case, it lets us trade off
|
|
* memory needed to make the data vs time to send it.
|
|
*/
|
|
|
|
vhd->count_live_pss++;
|
|
pss->next = vhd->live_pss_list;
|
|
vhd->live_pss_list = pss;
|
|
|
|
pss->wss_over_h2 = !!len;
|
|
|
|
time(&pss->time_est);
|
|
pss->wsi = wsi;
|
|
|
|
#if defined(LWS_WITH_HTTP_UNCOMMON_HEADERS)
|
|
if (lws_hdr_copy(wsi, pss->user_agent, sizeof(pss->user_agent),
|
|
WSI_TOKEN_HTTP_USER_AGENT) < 0) /* too big */
|
|
#endif
|
|
strcpy(pss->user_agent, "unknown");
|
|
trigger_resend(vhd);
|
|
break;
|
|
|
|
case LWS_CALLBACK_SERVER_WRITEABLE:
|
|
switch (pss->walk) {
|
|
case WALK_INITIAL:
|
|
n = LWS_WRITE_TEXT | LWS_WRITE_NO_FIN;
|
|
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
|
|
"{ \"version\":\"%s\","
|
|
" \"wss_over_h2\":\"%d\","
|
|
" \"hostname\":\"%s\","
|
|
" \"wsi\":\"%d\", \"conns\":[",
|
|
lws_get_library_version(),
|
|
pss->wss_over_h2,
|
|
lws_canonical_hostname(vhd->context),
|
|
vhd->count_live_pss);
|
|
pss->walk = WALK_LIST;
|
|
pss->walk_next = vhd->live_pss_list;
|
|
break;
|
|
case WALK_LIST:
|
|
n = LWS_WRITE_CONTINUATION | LWS_WRITE_NO_FIN;
|
|
if (!pss->walk_next)
|
|
goto walk_final;
|
|
|
|
if (pss->subsequent)
|
|
*p++ = ',';
|
|
pss->subsequent = 1;
|
|
|
|
m = 0;
|
|
lws_start_foreach_ll(struct per_session_data__lws_status *,
|
|
pss2, vhd->live_pss_list) {
|
|
if (pss2 == pss->walk_next) {
|
|
m = 1;
|
|
break;
|
|
}
|
|
} lws_end_foreach_ll(pss2, next);
|
|
|
|
if (!m) {
|
|
/* our next guy went away */
|
|
pss->walk = WALK_FINAL;
|
|
pss->changed_partway = 1;
|
|
break;
|
|
}
|
|
|
|
strcpy(ip, "unknown");
|
|
lws_get_peer_simple(pss->walk_next->wsi, ip, sizeof(ip));
|
|
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
|
|
"{\"peer\":\"%s\",\"time\":\"%ld\","
|
|
"\"ua\":\"%s\"}",
|
|
ip, (unsigned long)pss->walk_next->time_est,
|
|
pss->walk_next->user_agent);
|
|
pss->walk_next = pss->walk_next->next;
|
|
if (!pss->walk_next)
|
|
pss->walk = WALK_FINAL;
|
|
break;
|
|
case WALK_FINAL:
|
|
walk_final:
|
|
n = LWS_WRITE_CONTINUATION;
|
|
p += lws_snprintf(p, 4, "]}");
|
|
if (pss->changed_partway) {
|
|
pss->changed_partway = 0;
|
|
pss->subsequent = 0;
|
|
pss->walk_next = vhd->live_pss_list;
|
|
pss->walk = WALK_INITIAL;
|
|
} else
|
|
pss->walk = WALK_NONE;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
m = lws_write(wsi, (unsigned char *)start, lws_ptr_diff_size_t(p, start), (unsigned int)n);
|
|
if (m < 0) {
|
|
lwsl_err("ERROR %d writing to di socket\n", m);
|
|
return -1;
|
|
}
|
|
|
|
if (pss->walk != WALK_NONE)
|
|
lws_callback_on_writable(wsi);
|
|
break;
|
|
|
|
case LWS_CALLBACK_RECEIVE:
|
|
lwsl_notice("pmd test: RX len %d\n", (int)len);
|
|
break;
|
|
|
|
case LWS_CALLBACK_CLOSED:
|
|
// lwsl_debug("****** LWS_CALLBACK_CLOSED\n");
|
|
lws_start_foreach_llp(struct per_session_data__lws_status **,
|
|
ppss, vhd->live_pss_list) {
|
|
if (*ppss == pss) {
|
|
*ppss = pss->next;
|
|
break;
|
|
}
|
|
} lws_end_foreach_llp(ppss, next);
|
|
|
|
trigger_resend(vhd);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define LWS_PLUGIN_PROTOCOL_LWS_STATUS \
|
|
{ \
|
|
"lws-status", \
|
|
callback_lws_status, \
|
|
sizeof(struct per_session_data__lws_status), \
|
|
512, /* rx buf size must be >= permessage-deflate rx size */ \
|
|
0, NULL, 0 \
|
|
}
|
|
|
|
#if !defined (LWS_PLUGIN_STATIC)
|
|
|
|
static const struct lws_protocols protocols[] = {
|
|
LWS_PLUGIN_PROTOCOL_LWS_STATUS
|
|
};
|
|
|
|
LWS_VISIBLE const lws_plugin_protocol_t lws_status = {
|
|
.hdr = {
|
|
"lws status",
|
|
"lws_protocol_plugin",
|
|
LWS_PLUGIN_API_MAGIC
|
|
},
|
|
|
|
.protocols = protocols,
|
|
.count_protocols = LWS_ARRAY_SIZE(protocols),
|
|
.extensions = NULL,
|
|
.count_extensions = 0,
|
|
};
|
|
|
|
#endif
|