From 3898d4b6601f951f630f615098f5546f7184fe90 Mon Sep 17 00:00:00 2001
From: SPRESENSE <41312067+SPRESENSE@users.noreply.github.com>
Date: Fri, 19 Apr 2019 17:40:58 +0900
Subject: [PATCH 1/2] Porting the code for NuttX
cwebsocket/src/cwebsocket/client.c | 801 +++++++++++++++++++----------
cwebsocket/src/cwebsocket/client.h | 177 ++++++-
cwebsocket/src/cwebsocket/common.c | 29 +-
cwebsocket/src/cwebsocket/common.h | 68 ++-
4 files changed, 752 insertions(+), 323 deletions(-)
@@ -24,116 +24,198 @@
#include "client.h"
-void cwebsocket_client_init(cwebsocket_client *websocket, cwebsocket_subprotocol *subprotocols[], int subprotocol_len) {
+/* for NUTTX */
+extern int getaddrinfo(const char *nodename, const char *servname,
+ const struct addrinfo *hints, struct addrinfo **res);
+extern void freeaddrinfo(struct addrinfo *res);
+extern int ws_sscanf(FAR const char *buf, FAR const char *fmt, ...);
+
+int cwebsocket_client_init(cwebsocket_client *websocket, cwebsocket_subprotocol **subprotocols, int subprotocol_len) {
+ if (subprotocol_len > WEBSOCKET_SUBPROTOCOL_MAX)
+ return -1;
websocket->fd = 0;
websocket->retry = 0;
websocket->uri = '\0';
websocket->flags = 0;
websocket->state = WEBSOCKET_STATE_CLOSED;
+ websocket->proxy_addr = NULL;
+ websocket->proxy_port = NULL;
+ websocket->headers = NULL;
+ websocket->num_headers = 0;
websocket->subprotocol_len = subprotocol_len;
int i;
for(i=0; i<subprotocol_len; i++) {
- syslog(LOG_DEBUG, "cwebsocket_client_init: loading subprotocol %s", subprotocols[i]->name);
+ WS_DEBUG("client_init: loading subprotocol %s\n", subprotocols[i]->name);
+
websocket->subprotocols[i] = subprotocols[i];
}
- const rlim_t kStackSize = CWS_STACK_SIZE_MIN * 1024 * 1024;
- struct rlimit rl;
- int result;
- result = getrlimit(RLIMIT_STACK, &rl);
- if (result == 0) {
- if (rl.rlim_cur < kStackSize) {
- rl.rlim_cur = kStackSize;
- result = setrlimit(RLIMIT_STACK, &rl);
- if(result != 0) {
- syslog(LOG_CRIT, "cwebsocket_client_init: unable to set stack space");
- exit(1);
- }
- }
+ websocket->subprotocol = websocket->subprotocols[0];
+ return 0;
+}
+
+void cwebsocket_client_set_proxy(cwebsocket_client *websocket, char *proxy_addr, char *proxy_port)
+{
+ if (strlen(proxy_addr) > 0 && strlen(proxy_port) > 0){
+ websocket->flags |= WEBSOCKET_FLAG_PROXY;
+ websocket->proxy_addr = proxy_addr;
+ websocket->proxy_port = proxy_port;
+ }else {
+ WS_DEBUG("client_set_proxy: invalid proxy_addr\n");
+ }
+}
+void cwebsocket_client_unset_proxy(cwebsocket_client *websocket)
+{
+ if (websocket->flags & WEBSOCKET_FLAG_PROXY){
+ websocket->proxy_addr = NULL;
+ websocket->proxy_port = NULL;
+ websocket->flags |= ~WEBSOCKET_FLAG_PROXY;
}
- getrlimit(RLIMIT_STACK, &rl);
- syslog(LOG_DEBUG, "cwebsocket_client_init: stack limit min=%ld, max=%ld\n", rl.rlim_cur, rl.rlim_max);
}
void cwebsocket_client_parse_uri(cwebsocket_client *websocket, const char *uri,
char *hostname, char *port, char *resource, char *querystring) {
- if(sscanf(uri, "ws://%[^:]:%[^/]%[^?]%s", hostname, port, resource, querystring) == 4) {
+ if(ws_sscanf(uri, "ws://%[^:]:%[^/]%[^?]%s", hostname, port, resource, querystring) == 4) {
return;
}
- else if(sscanf(uri, "ws://%[^:]:%[^/]%s", hostname, port, resource) == 3) {
+ else if(ws_sscanf(uri, "ws://%[^:]:%[^/]%s", hostname, port, resource) == 3) {
strcpy(querystring, "");
return;
}
- else if(sscanf(uri, "ws://%[^:]:%[^/]%s", hostname, port, resource) == 2) {
- strcpy(resource, "/");
+ else if(ws_sscanf(uri, "ws://%[^:]:%[^/]%s", hostname, port, resource) == 2) {
+ strncpy(resource, "/", strlen("/"));
strcpy(querystring, "");
return;
}
- else if(sscanf(uri, "ws://%[^/]%s", hostname, resource) == 2) {
- strcpy(port, "80");
+ else if(ws_sscanf(uri, "ws://%[^/]%s", hostname, resource) == 2) {
+ strncpy(port, "80", strlen("80"));
strcpy(querystring, "");
return;
}
- else if(sscanf(uri, "ws://%[^/]", hostname) == 1) {
- strcpy(port, "80");
- strcpy(resource, "/");
+ else if(ws_sscanf(uri, "ws://%[^/]", hostname) == 1) {
+ strncpy(port, "80", strlen("80"));
+ strncpy(resource, "/", strlen("/"));
strcpy(querystring, "");
return;
}
#ifdef ENABLE_SSL
- else if(sscanf(uri, "wss://%[^:]:%[^/]%[^?]%s", hostname, port, resource, querystring) == 4) {
+ else if(ws_sscanf(uri, "wss://%[^:]:%[^/]%[^?]%s", hostname, port, resource, querystring) == 4) {
websocket->flags |= WEBSOCKET_FLAG_SSL;
return;
}
- else if(sscanf(uri, "wss://%[^:]:%[^/]%s", hostname, port, resource) == 3) {
+ else if(ws_sscanf(uri, "wss://%[^:]:%[^/]%s", hostname, port, resource) == 3) {
strcpy(querystring, "");
websocket->flags |= WEBSOCKET_FLAG_SSL;
return;
}
- else if(sscanf(uri, "wss://%[^:]:%[^/]%s", hostname, port, resource) == 2) {
- strcpy(resource, "/");
+ else if(ws_sscanf(uri, "wss://%[^:]:%[^/]%s", hostname, port, resource) == 2) {
+ strncpy(resource, "/", strlen("/"));
strcpy(querystring, "");
websocket->flags |= WEBSOCKET_FLAG_SSL;
return;
}
- else if(sscanf(uri, "wss://%[^/]%s", hostname, resource) == 2) {
- strcpy(port, "443");
+ else if(ws_sscanf(uri, "wss://%[^/]%s", hostname, resource) == 2) {
+ strncpy(port, "443", strlen("443"));
strcpy(querystring, "");
websocket->flags |= WEBSOCKET_FLAG_SSL;
return;
}
- else if(sscanf(uri, "wss://%[^/]", hostname) == 1) {
- strcpy(port, "443");
- strcpy(resource, "/");
+ else if(ws_sscanf(uri, "wss://%[^/]", hostname) == 1) {
+ strncpy(port, "443", strlen("443"));
+ strncpy(resource, "/", strlen("/"));
strcpy(querystring, "");
websocket->flags |= WEBSOCKET_FLAG_SSL;
return;
}
#endif
else if(strstr(uri, "wss://") > 0) {
- syslog(LOG_CRIT, "cwebsocket_client_parse_uri: recompile with SSL support to use a secure connection");
+ WS_DEBUG("client_parse_uri: recompile with SSL support to use a secure connection");
exit(1);
}
else {
- syslog(LOG_CRIT, "cwebsocket_client_parse_uri: invalid websocket URL\n");
+ WS_DEBUG("client_parse_uri: invalid websocket URL : %s\n", uri);
exit(1);
}
}
+
+int cwebsocket_client_ssl_init(cwebsocket_client *websocket, char *cert_name, char *cli_cert, char *cli_key, char *passphrase) {
+#ifdef ENABLE_SSL
+ int ret= 0;
+
+ WS_DEBUG("client_connect: using secure (SSL) connection\n");
+
+ mbedtls_net_init( &websocket->ssl_net_ctx );
+ mbedtls_ssl_init( &websocket->ssl );
+ mbedtls_ssl_config_init( &websocket->conf );
+ mbedtls_x509_crt_init( &websocket->cacert );
+ mbedtls_ctr_drbg_init( &websocket->ctr_drbg );
+ mbedtls_entropy_init( &websocket->entropy );
+
+ if( ( ret = mbedtls_ctr_drbg_seed( &websocket->ctr_drbg, NULL, &websocket->entropy,
+ (const unsigned char *) "ssl_client1",
+ strlen( "ssl_client1" ) ) ) != 0 )
+ {
+ WS_DEBUG(" failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
+ return -1;
+ }
+ ret = mbedtls_x509_crt_parse_file( &websocket->cacert, cert_name );
+ if( ret != 0 )
+ {
+ WS_DEBUG("nothing file = -0x%x\n", -ret);
+ return -1;
+ }
+
+ if( ( ret = mbedtls_ssl_config_defaults( &websocket->conf,
+ MBEDTLS_SSL_IS_CLIENT,
+ MBEDTLS_SSL_TRANSPORT_STREAM,
+ MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
+ {
+ WS_DEBUG(" failed\n ! mbedtls_ssl_config_defaults returned -0x%x\n\n", ret );
+ return -1;
+ }
+
+ /* OPTIONAL is not optimal for security,
+ * but makes interop easier in this simplified example */
+ mbedtls_ssl_conf_authmode( &websocket->conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
+ mbedtls_ssl_conf_ca_chain( &websocket->conf, &websocket->cacert, NULL );
+ mbedtls_ssl_conf_rng( &websocket->conf, NULL, &websocket->ctr_drbg );
+
+ if (cli_cert != NULL && cli_key != NULL){
+ ret = mbedtls_x509_crt_parse_file(&websocket->clicert, cli_cert);
+ if (ret == 0) {
+ ret = mbedtls_pk_parse_keyfile(&websocket->pkey, cli_key, passphrase);
+ if (ret != 0) {
+ WS_DEBUG("Private Key not found\n");
+ return -1;
+ }
+ } else {
+ WS_DEBUG("Client certificate not found\n");
+ return -1;
+ }
+ mbedtls_ssl_conf_own_cert(&websocket->conf, &websocket->clicert, &websocket->pkey);
+ }
+
+ return ret;
+#else
+ return -1;
+#endif
+}
+
int cwebsocket_client_connect(cwebsocket_client *websocket) {
if(websocket->state & WEBSOCKET_STATE_CONNECTED) {
- syslog(LOG_CRIT, "cwebsocket_client_connect: socket already connected");
+ WS_DEBUG("client_connect: socket already connected");
return -1;
}
if(websocket->state & WEBSOCKET_STATE_CONNECTING) {
- syslog(LOG_CRIT, "cwebsocket_client_connect: socket already connecting");
+ WS_DEBUG("client_connect: socket already connecting");
return -1;
}
if(websocket->state & WEBSOCKET_STATE_OPEN) {
- syslog(LOG_CRIT, "cwebsocket_client_connect: socket already open");
+ WS_DEBUG("client_connect: socket already open");
return -1;
}
@@ -154,24 +236,35 @@ int cwebsocket_client_connect(cwebsocket_client *websocket) {
#else
websocket->state = WEBSOCKET_STATE_CONNECTING;
#endif
-
+#ifdef ENABLE_SSL
+ uint32_t flags;
+ int ret;
+#endif
char hostname[100];
char port[6];
char resource[256];
char querystring[256];
+
+ memset(hostname, 0, 100);
+ memset(port, 0, 6);
+ memset(resource, 0, 256);
+ memset(querystring, 0, 100);
+
cwebsocket_client_parse_uri(websocket, websocket->uri, hostname, port, resource, querystring);
- syslog(LOG_DEBUG, "cwebsocket_client_connect: hostname=%s, port=%s, resource=%s, querystring=%s, secure=%i\n",
+ WS_DEBUG ("client_connect: hostname=%s, port=%s, resource=%s, querystring=%s, secure=%i\n",
hostname, port, resource, querystring, (websocket->flags & WEBSOCKET_FLAG_SSL));
- char handshake[1024];
- struct addrinfo hints, *servinfo;
+ char handshake[CWS_HANDSHAKE_BUFFER_MAX];
+ struct addrinfo hints, *servinfo;
+ time_t Tick0 = 0;
+ time(&Tick0);
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
- srand(time(NULL));
+ srand(Tick0);
char nonce[16];
static const char alphanum[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz";
int i;
@@ -180,100 +273,178 @@ int cwebsocket_client_connect(cwebsocket_client *websocket) {
}
char *seckey = cwebsocket_base64_encode((const unsigned char *)nonce, sizeof(nonce));
- snprintf(handshake, 1024,
- "GET %s%s HTTP/1.1\r\n"
- "Host: %s:%s\r\n"
- "Upgrade: WebSocket\r\n"
- "Connection: Upgrade\r\n"
- "Sec-WebSocket-Key: %s\r\n"
- "Sec-WebSocket-Version: 13\r\n"
+ snprintf(handshake, CWS_HANDSHAKE_BUFFER_MAX,
+ "GET %s%s HTTP/1.1\r\n"
+ "Host: %s:%s\r\n"
+ "Upgrade: WebSocket\r\n"
+ "Connection: Upgrade\r\n"
+ "Sec-WebSocket-Key: %s\r\n"
+ "Sec-WebSocket-Version: 13\r\n"
,resource, querystring, hostname, port, seckey);
+ if((websocket->headers != NULL) && (websocket->num_headers > 0)) {
+ for(i = 0; i < websocket->num_headers; i++) {
+ strncat(handshake, websocket->headers[i], (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
+ strncat(handshake, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
+ }
+ }
+
if(websocket->subprotocol_len > 0) {
- strcat(handshake, "Sec-WebSocket-Protocol: ");
+ strncat(handshake, "Sec-WebSocket-Protocol: ", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
for(i=0; i<websocket->subprotocol_len; i++) {
- strcat(handshake, websocket->subprotocols[i]->name);
+ strncat(handshake, websocket->subprotocols[i]->name, (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
if(i<websocket->subprotocol_len) {
- strcat(handshake, " ");
+ strncat(handshake, " ", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
}
else {
- strcat(handshake, "\r\n");
+ strncat(handshake, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
}
}
+ strncat(handshake, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
}
- strcat(handshake, "\r\n");
+ strncat(handshake, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(handshake)));
- if(getaddrinfo(hostname, port, &hints, &servinfo) != 0 ) {
- freeaddrinfo(servinfo);
- const char *errmsg = "invalid hostname or IP";
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", errmsg);
- cwebsocket_client_onerror(websocket, errmsg);
- return -1;
- }
+ if(websocket->flags & WEBSOCKET_FLAG_SSL) {
+#ifdef ENABLE_SSL
+ if( ( ret = mbedtls_ssl_setup( &websocket->ssl, &websocket->conf ) ) != 0 )
+ {
+ WS_DEBUG( " failed\n ! mbedtls_ssl_setup returned -0x%x\n\n", -ret );
+ goto fail;
+ }
+ if(websocket->flags & WEBSOCKET_FLAG_PROXY) {
+ /* SSL On / Proxy On
+ Execute CONNECT command of non-secure message after connecting to proxy server.
+ */
+ if( ( ret = mbedtls_net_connect( &websocket->ssl_net_ctx, websocket->proxy_addr,
+ websocket->proxy_port, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
+ {
+ WS_DEBUG(" failed\n ! mbedtls_net_connect proxy returned %d\n\n", ret );
+ goto fail;
+ }
+ if(websocket->flags & WEBSOCKET_FLAG_PROXY) {
+ char proxy_connect[CWS_HANDSHAKE_BUFFER_MAX];
+
+ snprintf(proxy_connect, CWS_HANDSHAKE_BUFFER_MAX,
+ "CONNECT %s:%s HTTP/1.1\r\n"
+ "Host: %s\r\n"
+ , hostname, port, hostname);
+ strncat(proxy_connect, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(proxy_connect)));
+ if(write(websocket->ssl_net_ctx.fd, proxy_connect, strlen(proxy_connect)) == -1) {
+ WS_DEBUG("proxy_client_write: NG A\n");
+ goto fail;
+ }
+ if(cwebsocket_client_read_handshake(websocket, seckey, websocket->flags) == -1) {
+ WS_DEBUG("proxy_client_read_handshake for SSL: %s\n", seckey);
+ goto fail;
+ }
+ }
+ }else{
+ /* SSL On / Proxy OFF
+ Connecting to websocket server.
+ */
+ if( ( ret = mbedtls_net_connect( &websocket->ssl_net_ctx, hostname,
+ port, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
+ {
+ WS_DEBUG(" failed\n ! mbedtls_net_connect returned %d\n\n", ret );
+ goto fail;
+ }
+ }
- websocket->fd = socket(servinfo->ai_family, servinfo->ai_socktype, servinfo->ai_protocol);
- if(websocket->fd < 0) {
- freeaddrinfo(servinfo);
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- return -1;
- }
+ mbedtls_ssl_set_bio( &websocket->ssl, &websocket->ssl_net_ctx, NULL, NULL, NULL);
- if(connect(websocket->fd, servinfo->ai_addr, servinfo->ai_addrlen) != 0 ) {
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- websocket->state = WEBSOCKET_STATE_CLOSED;
- if(websocket->retry > 0) {
- sleep(websocket->retry);
- cwebsocket_client_connect(websocket);
+ while( ( ret = mbedtls_ssl_handshake( &websocket->ssl ) ) != 0 )
+ {
+ if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
+ {
+ WS_DEBUG(" failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
+ goto fail;
+ }
}
- return -1;
- }
- freeaddrinfo(servinfo);
+ websocket->fd = websocket->ssl_net_ctx.fd;
- int optval = 1;
- if(setsockopt(websocket->fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof optval) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- return -1;
- }
+ /* In real life, we probably want to bail out when ret != 0 */
+ if( ( flags = mbedtls_ssl_get_verify_result( &websocket->ssl ) ) != 0 )
+ {
+ char vrfy_buf[512];
-#ifdef ENABLE_SSL
+ mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags );
- websocket->ssl = NULL;
- websocket->sslctx = NULL;
+ WS_DEBUG("%s\n", vrfy_buf );
- if(websocket->flags & WEBSOCKET_FLAG_SSL) {
-
- syslog(LOG_DEBUG, "cwebsocket_client_connect: using secure (SSL) connection");
+ }
+ else
+ WS_DEBUG(" certificate ok\n");
+#endif
+ }else {
+ if(websocket->flags & WEBSOCKET_FLAG_PROXY) {
+ if(getaddrinfo(websocket->proxy_addr, websocket->proxy_port, &hints, &servinfo) != 0 ) {
+ freeaddrinfo(servinfo);
+ const char *errmsg = "invalid hostname or IP";
+ WS_DEBUG("client_proxy_connect: %s", websocket->proxy_addr);
+ cwebsocket_client_onerror(websocket, errmsg);
+ goto fail;
+ }
+ }else {
+ if(getaddrinfo(hostname, port, &hints, &servinfo) != 0 ) {
+ freeaddrinfo(servinfo);
+ const char *errmsg = "invalid hostname or IP";
+ WS_DEBUG("client_non_proxy_connect: %s", errmsg);
+ cwebsocket_client_onerror(websocket, errmsg);
+ goto fail;
+ }
+ }
- SSL_load_error_strings();
- SSL_library_init();
+ websocket->fd = socket(servinfo->ai_family, servinfo->ai_socktype, servinfo->ai_protocol);
+ if(websocket->fd < 0) {
+ freeaddrinfo(servinfo);
+ goto fail;
+ }
- websocket->sslctx = SSL_CTX_new(SSLv23_client_method());
- if(websocket->sslctx == NULL) {
- ERR_print_errors_fp(stderr);
- return -1;
- }
+ if(connect(websocket->fd, servinfo->ai_addr, servinfo->ai_addrlen) != 0 ) {
+ freeaddrinfo(servinfo);
+ websocket->state = WEBSOCKET_STATE_CLOSED;
+ if(websocket->retry > 0) {
+ usleep(websocket->retry * 1000);
+ cwebsocket_client_connect(websocket);
+ }
+ goto fail;
+ }
+ freeaddrinfo(servinfo);
- websocket->ssl = SSL_new(websocket->sslctx);
- if(websocket->ssl == NULL) {
- ERR_print_errors_fp(stderr);
- return -1;
- }
+ int optval = 1;
+ if(setsockopt(websocket->fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof optval) == -1) {
+ goto fail;
+ }
+ struct timeval tv;
+ tv.tv_sec = 1; /* 1 second Timeout */
+ tv.tv_usec = 0;
- if(!SSL_set_fd(websocket->ssl, websocket->fd)) {
- ERR_print_errors_fp(stderr);
- return -1;
- }
+ if(setsockopt(websocket->fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(struct timeval)) == -1) {
+ goto fail;
+ }
- if(SSL_connect(websocket->ssl) != 1) {
- ERR_print_errors_fp(stderr);
- return -1;
- }
+ if(websocket->flags & WEBSOCKET_FLAG_PROXY) {
+ /* SSL Off / Proxy On
+ Execute CONNECT command after connecting to proxy server.
+ */
+ char proxy_connect[CWS_HANDSHAKE_BUFFER_MAX];
+
+ snprintf(proxy_connect, CWS_HANDSHAKE_BUFFER_MAX,
+ "CONNECT %s:%s HTTP/1.1\r\n"
+ "Host: %s\r\n"
+ , hostname, port, hostname);
+ strncat(proxy_connect, "\r\n", (CWS_HANDSHAKE_BUFFER_MAX - strlen(proxy_connect)));
+ if(write(websocket->fd, proxy_connect, strlen(proxy_connect)) == -1) {
+ WS_DEBUG("proxy_client_write: NG\n");
+ goto fail;
+ }
+ if(cwebsocket_client_read_handshake(websocket, seckey, websocket->flags) == -1) {
+ WS_DEBUG("proxy_client_read_handshake: %s\n", seckey);
+ goto fail;
+ }
+ }
}
-#endif
#ifdef ENABLE_THREADS
pthread_mutex_lock(&websocket->lock);
@@ -284,17 +455,16 @@ int cwebsocket_client_connect(cwebsocket_client *websocket) {
#endif
if(cwebsocket_client_write(websocket, handshake, strlen(handshake)) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- return -1;
+ WS_DEBUG("client_connect: NG\n");
+ goto fail;
}
- if(cwebsocket_client_read_handshake(websocket, seckey) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_connect: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- return -1;
+ if(cwebsocket_client_read_handshake(websocket, seckey, 0) == -1) {
+ WS_DEBUG("client_connect: %s\n", seckey);
+ goto fail;
}
+ free(seckey);
#ifdef ENABLE_THREADS
pthread_mutex_lock(&websocket->lock);
websocket->state = WEBSOCKET_STATE_OPEN;
@@ -306,11 +476,15 @@ int cwebsocket_client_connect(cwebsocket_client *websocket) {
cwebsocket_client_onopen(websocket);
return 0;
+fail:
+ free(seckey);
+ cwebsocket_client_close(websocket, 1009, "connect failed");
+ return -1;
}
int cwebsocket_client_handshake_handler(cwebsocket_client *websocket, const char *handshake_response, char *seckey) {
uint8_t flags = 0;
- syslog(LOG_DEBUG, "cwebsocket_client_handshake_handler: handshake response: \n%s\n", handshake_response);
+ WS_DEBUG("client_handshake_handler: handshake response: \n%s\n", handshake_response);
char *ptr = NULL, *token = NULL;
for(token = strtok((char *)handshake_response, "\r\n"); token != NULL; token = strtok(NULL, "\r\n")) {
if(*token == 'H' && *(token+1) == 'T' && *(token+2) == 'T' && *(token+3) == 'P') {
@@ -324,20 +498,21 @@ int cwebsocket_client_handshake_handler(cwebsocket_client *websocket, const char
} else {
ptr = strchr(token, ' ');
if(ptr == NULL) {
- syslog(LOG_ERR, "cwebsocket_client_handshake_handler: invalid HTTP header sent: %s", token);
+ WS_DEBUG("client_handshake_handler: invalid HTTP header sent: %s\n", token);
cwebsocket_client_onerror(websocket, "invalid HTTP header sent");
return -1;
}
*ptr = '\0';
if(strcasecmp(token, "Upgrade:") == 0) {
- if(strcasecmp(ptr+1, "websocket") != 0) {
+
+ if(strncasecmp(ptr+1, "websocket", strlen("websocket") -1) != 0) {
cwebsocket_client_onerror(websocket, "cwebsocket_client_handshake_handler: invalid HTTP upgrade header");
return -1;
}
flags |= CWS_HANDSHAKE_HAS_UPGRADE;
}
if(strcasecmp(token, "Connection:") == 0) {
- if(strcasecmp(ptr+1, "upgrade") != 0) {
+ if(strncasecmp(ptr+1, "upgrade", strlen("upgrade") -1) != 0) {
cwebsocket_client_onerror(websocket, "cwebsocket_client_handshake_handler: invalid HTTP connection header");
return -1;
}
@@ -346,27 +521,24 @@ int cwebsocket_client_handshake_handler(cwebsocket_client *websocket, const char
if(strcasecmp(token, "Sec-WebSocket-Protocol:") == 0) {
int i;
for(i=0; i<websocket->subprotocol_len; i++) {
- if(strcasecmp(ptr+1, websocket->subprotocols[i]->name) == 0) {
+ if(strncasecmp(ptr+1, websocket->subprotocols[i]->name, strlen(websocket->subprotocols[i]->name) -1) == 0) {
websocket->subprotocol = websocket->subprotocols[i];
- syslog(LOG_DEBUG, "cwebsocket_client_handshake_handler: setting subprotocol to %s", websocket->subprotocol->name);
+ WS_DEBUG("client_handshake_handler: setting subprotocol to %s\n", websocket->subprotocol->name);
}
}
}
if(strcasecmp(token, "Sec-WebSocket-Accept:") == 0) {
char* response = cwebsocket_create_key_challenge_response(seckey);
- if(strcmp(ptr+1, response) != 0) {
- free(seckey);
+ if(strncmp(ptr+1, response, strlen(response) -1) != 0) {
if(websocket->subprotocol->onerror != NULL) {
char errmsg[255];
sprintf(errmsg, "cwebsocket_client_handshake_handler: Sec-WebSocket-Accept header does not match computed sha1/base64 response. expected=%s, actual=%s", response, ptr+1);
cwebsocket_client_onerror(websocket, errmsg);
- free(response);
- return -1;
}
+ free(response);
return -1;
}
free(response);
- free(seckey);
flags |= CWS_HANDSHAKE_HAS_ACCEPT;
}
}
@@ -377,11 +549,11 @@ int cwebsocket_client_handshake_handler(cwebsocket_client *websocket, const char
cwebsocket_client_close(websocket, 1002, "invalid websocket HTTP headers");
return -1;
}
- syslog(LOG_DEBUG, "cwebsocket_client_handshake_handler: handshake successful");
+ WS_DEBUG("client_handshake_handler: handshake successful\n");
return 0;
}
-int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey) {
+int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey, int flags) {
int byte, tmplen = 0;
uint32_t bytes_read = 0;
@@ -394,12 +566,11 @@ int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey)
if(byte == 0) return -1;
if(byte == -1) {
- syslog(LOG_ERR, "cwebsocket_client_read_handshake: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
+ WS_DEBUG("client_read_handshake: %s", strerror(errno));
return -1;
}
if(bytes_read == CWS_HANDSHAKE_BUFFER_MAX) {
- syslog(LOG_ERR, "cwebsocket_client_read_handshake: handshake response too large. CWS_HANDSHAKE_BUFFER_MAX = %i bytes.", CWS_HANDSHAKE_BUFFER_MAX);
+ WS_DEBUG("client_read_handshake: handshake response too large. CWS_HANDSHAKE_BUFFER_MAX = %i bytes.", CWS_HANDSHAKE_BUFFER_MAX);
cwebsocket_client_onerror(websocket, "handshake response too large");
return -1;
}
@@ -414,22 +585,62 @@ int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey)
memcpy(buf, data, tmplen);
buf[tmplen+1] = '\0';
- return cwebsocket_client_handshake_handler(websocket, buf, seckey);
+ if(flags & WEBSOCKET_FLAG_PROXY) {
+ return cwebsocket_proxy_client_handshake_handler(websocket, buf);
+ } else {
+ return cwebsocket_client_handshake_handler(websocket, buf, seckey);
+ }
+}
+
+int cwebsocket_proxy_client_handshake_handler(cwebsocket_client *websocket, const char *handshake_response) {
+ uint8_t flags = 0;
+ WS_DEBUG("proxy_client_handshake_handler: handshake response: \n%s\n", handshake_response);
+ char *ptr = NULL, *token = NULL;
+
+ /*
+ The response code from the proxy server allows only 200.
+ */
+ for(token = strtok((char *)handshake_response, "\r\n"); token != NULL; token = strtok(NULL, "\r\n")) {
+ if(*token == 'H' && *(token+1) == 'T' && *(token+2) == 'T' && *(token+3) == 'P') {
+ ptr = strchr(token, ' ');
+ ptr = strchr(ptr+1, ' ');
+ *ptr = '\0';
+ if((websocket->flags & WEBSOCKET_FLAG_PROXY) && (strcmp(token, "HTTP/1.1 200") == 0 || strcmp(token, "HTTP/1.0 200") == 0)) {
+ WS_DEBUG("client_handshake_handler: proxy handshake successful\n");
+ return 0;
+ }
+ } else {
+ ptr = strchr(token, ' ');
+ if(ptr == NULL) {
+ WS_DEBUG("client_handshake_handler: invalid HTTP header sent: %s\n", token);
+ cwebsocket_client_onerror(websocket, "invalid HTTP header sent");
+ return -1;
+ }
+ *ptr = '\0';
+ }
+ }
+ if(((flags & CWS_HANDSHAKE_HAS_UPGRADE) == 0) || ((flags & CWS_HANDSHAKE_HAS_CONNECTION) == 0) ||
+ ((flags & CWS_HANDSHAKE_HAS_ACCEPT) == 0)) {
+ // TODO send http error code (500?)
+ cwebsocket_client_close(websocket, 1002, "invalid websocket HTTP headers");
+ return -1;
+ }
+ WS_DEBUG("client_handshake_handler: handshake successful\n");
+ return 0;
}
void cwebsocket_client_listen(cwebsocket_client *websocket) {
while(websocket->state & WEBSOCKET_STATE_OPEN) {
- syslog(LOG_DEBUG, "cwebsocket_client_listen: calling cwebsocket_client_read_data");
+ WS_DEBUG("client_listen: calling cwebsocket_client_read_data");
cwebsocket_client_read_data(websocket);
}
- syslog(LOG_DEBUG, "cwebsocket_client_listen: shutting down");
+ WS_DEBUG("client_listen: shutting down");
}
#ifdef ENABLE_THREADS
void *cwebsocket_client_onmessage_thread(void *ptr) {
cwebsocket_client_thread_args *args = (cwebsocket_client_thread_args *)ptr;
cwebsocket_client_onmessage(args->socket, args->message);
- //free(args->message->payload);
free(args->message);
free(ptr);
return NULL;
@@ -452,28 +663,23 @@ int cwebsocket_client_send_control_frame(cwebsocket_client *websocket, opcode co
control_frame[4] = masking_key[2];
control_frame[5] = masking_key[3];
if(code & CLOSE) {
- uint16_t close_code = 1000;
if(payload_len >= 2) {
if(payload_len > 2) {
- char parsed_payload[payload_len];
- memcpy(parsed_payload, &payload[0], payload_len);
- parsed_payload[payload_len] = '\0';
- close_code = (control_frame[6] << 8) + control_frame[7];
int i;
for(i=0; i<payload_len; i++) {
- control_frame[6+i] = (parsed_payload[i] ^ masking_key[i % 4]) & 0xff;
+ control_frame[header_len+i] = (payload[i] ^ masking_key[i % 4]) & 0xff;
}
- syslog(LOG_DEBUG, "cwebsocket_client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, code=%i, payload=%s",
- code, frame_type, payload_len, close_code, parsed_payload);
+ WS_DEBUG("client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, payload=%s\n",
+ code, frame_type, payload_len, payload + 2);
}
else {
- syslog(LOG_DEBUG, "cwebsocket_client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, code=%i, payload=(null)",
- code, frame_type, payload_len, close_code);
+ WS_DEBUG("client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, payload=(null)\n",
+ code, frame_type, payload_len);
}
}
else {
- syslog(LOG_DEBUG, "cwebsocket_client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, code=%i, payload=(null)",
- code, frame_type, payload_len, close_code);
+ WS_DEBUG("client_send_control_frame: opcode=%#04x, frame_type=%s, payload_len=%i, payload=(null)\n",
+ code, frame_type, payload_len);
}
}
else {
@@ -484,16 +690,15 @@ int cwebsocket_client_send_control_frame(cwebsocket_client *websocket, opcode co
}
bytes_written = cwebsocket_client_write(websocket, control_frame, frame_len);
if(bytes_written == 0) {
- syslog(LOG_DEBUG, "cwebsocket_client_send_control_frame: remote host closed the connection");
+ WS_DEBUG("client_send_control_frame: remote host closed the connection\n");
return 0;
}
else if(bytes_written == -1) {
- syslog(LOG_CRIT, "cwebsocket_client_send_control_frame: error sending %s control frame. %s", frame_type, strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
+ WS_DEBUG("client_send_control_frame: error sending control frame\n");
return -1;
}
else {
- syslog(LOG_DEBUG, "cwebsocket_client_send_control_frame: wrote %zd byte %s frame", bytes_written, frame_type);
+ WS_DEBUG("client_send_control_frame: wrote %zd byte\n", bytes_written);
}
return bytes_written;
}
@@ -508,8 +713,9 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
uint8_t *data = malloc(CWS_DATA_BUFFER_MAX);
if(data == NULL) {
- perror("out of memory");
- exit(-1);
+ WS_DEBUG("client_read_data: data out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ return -1;
}
memset(data, 0, CWS_DATA_BUFFER_MAX);
@@ -520,9 +726,10 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
while(bytes_read < frame_size && (websocket->state & WEBSOCKET_STATE_OPEN)) {
if(bytes_read >= CWS_DATA_BUFFER_MAX) {
- syslog(LOG_ERR, "cwebsocket_client_read_data: frame too large. RECEIVE_BUFFER_MAX = %i bytes. bytes_read=%i, header_length=%i",
+ WS_DEBUG("client_read_data: frame too large. RECEIVE_BUFFER_MAX = %i bytes. bytes_read=%i, header_length=%i",
CWS_DATA_BUFFER_MAX, bytes_read, header_length);
cwebsocket_client_close(websocket, 1009, "frame too large");
+ free(data);
return -1;
}
@@ -532,11 +739,11 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
char *errmsg = "server closed the connection";
cwebsocket_client_onerror(websocket, errmsg);
cwebsocket_client_close(websocket, 1006, errmsg);
+ free(data);
return -1;
}
if(byte == -1) {
- syslog(LOG_ERR, "cwebsocket_client_read_data: error reading frame: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
+ free(data);
return -1;
}
bytes_read++;
@@ -553,8 +760,9 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
if(frame.mask == 1) {
const char *errmsg = "received masked frame from server";
- syslog(LOG_CRIT, "cwebsocket_client_read_data: %s", errmsg);
+ WS_DEBUG("client_read_data: %s", errmsg);
cwebsocket_client_onerror(websocket, errmsg);
+ free(data);
return -1;
}
@@ -596,113 +804,137 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
char *payload = malloc(sizeof(char) * payload_length+1);
if(payload == NULL) {
- perror("out of memory");
- exit(-1);
+ WS_DEBUG("client_read_data: payload out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ free(data);
+ return -1;
}
memcpy(payload, &data[header_length], payload_length);
payload[payload_length] = '\0';
free(data);
+ data = NULL;
size_t utf8_code_points = 0;
if(utf8_count_code_points((uint8_t *)payload, &utf8_code_points)) {
- syslog(LOG_ERR, "cwebsocket_client_read_data: received %lld byte malformed utf8 text payload: %s", payload_length, payload);
+ WS_DEBUG("client_read_data: received %lld byte malformed utf8 text payload: %s", payload_length, payload);
cwebsocket_client_onerror(websocket, "received malformed utf8 payload");
+ free(payload);
return -1;
}
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received %lld byte text payload: %s", payload_length, payload);
+ WS_DEBUG("client_read_data: received %lld byte text payload: %s", payload_length, payload);
if(websocket->subprotocol != NULL && websocket->subprotocol->onmessage != NULL) {
#ifdef ENABLE_THREADS
- cwebsocket_message *message = malloc(sizeof(cwebsocket_message));
+ cwebsocket_dsp_message *message = malloc(sizeof(cwebsocket_dsp_message));
if(message == NULL) {
- perror("out of memory");
- exit(-1);
+ WS_DEBUG("client_read_data: text message out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ free(payload);
+ return -1;
}
- memset(message, 0, sizeof(cwebsocket_message));
+ memset(message, 0, sizeof(cwebsocket_dsp_message));
message->opcode = frame.opcode;
- message->payload_len = frame.payload_len;
+ message->payload_len = payload_length;
message->payload = payload;
cwebsocket_client_thread_args *args = malloc(sizeof(cwebsocket_client_thread_args));
if(args == NULL) {
- perror("out of memory");
- exit(-1);
+ WS_DEBUG ("client_read_data: text args out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ free(payload);
+ return -1;
}
memset(args, 0, sizeof(cwebsocket_client_thread_args));
args->socket = websocket;
args->message = message;
if(pthread_create(&websocket->thread, NULL, cwebsocket_client_onmessage_thread, (void *)args) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_read_data: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
- return -1;
+ free(payload);
+ free(message);
+ free(args);
+ return -1;
}
+ free(payload);
return bytes_read;
#else
- cwebsocket_message message = {0};
+ cwebsocket_dsp_message message = {0};
message.opcode = frame.opcode;
- message.payload_len = frame.payload_len;
+ message.payload_len = payload_length;
message.payload = payload;
- cwebsocket_client_onmessage(websocket, &message);
- //free(payload);
- return bytes_read;
+ cwebsocket_client_onmessage(websocket, &message);
+ free(payload);
+ return bytes_read;
#endif
}
- syslog(LOG_WARNING, "cwebsocket_client_read_data: onmessage callback undefined");
+ WS_DEBUG("client_read_data: onmessage callback undefined\n");
+ free(payload);
return bytes_read;
}
else if(frame.fin && frame.opcode == BINARY_FRAME) {
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received BINARY payload. bytes=%lld", payload_length);
+ WS_DEBUG("client_read_data: received BINARY payload. bytes=%lld\n", payload_length);
char *payload = malloc(sizeof(char) * payload_length);
if(payload == NULL) {
perror("out of memory");
+ free(data);
exit(-1);
}
memcpy(payload, &data[header_length], payload_length);
free(data);
+ data = NULL;
if(websocket->subprotocol->onmessage != NULL) {
#ifdef ENABLE_THREADS
- cwebsocket_message *message = malloc(sizeof(cwebsocket_message));
+ cwebsocket_dsp_message *message = malloc(sizeof(cwebsocket_dsp_message));
if(message == NULL) {
- perror("out of memory");
- exit(-1);
+ WS_DEBUG("client_read_data: binary message out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ free(payload);
+ return -1;
}
message->opcode = frame.opcode;
- message->payload_len = frame.payload_len;
+ message->payload_len = payload_length;
message->payload = payload;
cwebsocket_client_thread_args *args = malloc(sizeof(cwebsocket_client_thread_args));
+ if(args == NULL) {
+ WS_DEBUG("client_read_data: binary args out of memory");
+ cwebsocket_client_close(websocket, 1009, "out of memory");
+ return -1;
+ }
args->socket = websocket;
args->message = message;
if(pthread_create(&websocket->thread, NULL, cwebsocket_client_onmessage_thread, (void *)args) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_read_data: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
+ free(payload);
+ free(message);
+ free(args);
return -1;
}
+ free(payload);
return bytes_read;
#else
- cwebsocket_message message;
+ cwebsocket_dsp_message message;
message.opcode = frame.opcode;
- message.payload_len = frame.payload_len;
+ message.payload_len = payload_length;
message.payload = payload;
- websocket->subprotocol->onmessage(websocket, &message);
+ cwebsocket_client_onmessage(websocket, &message);
free(payload);
return bytes_read;
#endif
}
- syslog(LOG_WARNING, "cwebsocket_client_read_data: onmessage callback undefined");
+ WS_DEBUG("client_read_data: onmessage callback undefined");
+ free(payload);
return bytes_read;
}
else if(frame.opcode == CONTINUATION) {
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received CONTINUATION opcode");
+ WS_DEBUG("client_read_data: onmessage callback undefined");
+ free(data);
return 0;
}
else if(frame.opcode == PING) {
@@ -713,20 +945,22 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
cwebsocket_client_close(websocket, 1002, "control frames must not exceed 125 bytes");
return -1;
}
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received PING control frame");
+ WS_DEBUG("client_read_data: received PING control frame");
uint8_t payload[payload_length];
memcpy(payload, &data[header_length], payload_length);
payload[payload_length] = '\0';
free(data);
- return cwebsocket_client_send_control_frame(websocket, 0x0A, "PONG", payload, payload_length);
+ return cwebsocket_client_send_control_frame(websocket, PONG, "PONG", payload, payload_length);
}
else if(frame.opcode == PONG) {
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received PONG control frame");
+ WS_DEBUG("client_read_data: received PONG control frame");
+ free(data);
return 0;
}
else if(frame.opcode == CLOSE) {
if(frame.payload_len > 125) {
cwebsocket_client_close(websocket, 1002, "control frames must not exceed 125 bytes");
+ free(data);
return -1;
}
int code = 0;
@@ -739,7 +973,7 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
memcpy(payload, &data[header_length], (payload_length) * sizeof(uint8_t));
payload[payload_length] = '\0';
free(data);
- syslog(LOG_DEBUG, "cwebsocket_client_read_data: received CLOSE control frame. payload_length=%lld, code=%i, reason=%s", payload_length, code, payload);
+ WS_DEBUG("client_read_data: received CLOSE control frame. payload_length=%lld, code=%i, reason=%s", payload_length, code, payload);
cwebsocket_client_close(websocket, code, NULL);
return 0;
}
@@ -747,7 +981,7 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
free(data);
char closemsg[50];
sprintf(closemsg, "received unsupported opcode: %#04x", frame.opcode);
- syslog(LOG_ERR, "cwebsocket_client_read_data: %s", closemsg);
+ WS_DEBUG("client_read_data: %s", closemsg);
cwebsocket_print_frame(&frame);
cwebsocket_client_onerror(websocket, closemsg);
cwebsocket_client_close(websocket, 1002, closemsg);
@@ -756,25 +990,26 @@ int cwebsocket_client_read_data(cwebsocket_client *websocket) {
void cwebsocket_client_create_masking_key(uint8_t *masking_key) {
uint8_t mask_bit;
- struct timeval tv;
- gettimeofday(&tv, NULL);
- srand(tv.tv_usec * tv.tv_sec);
+ time_t Tick0 = 0;
+
+ time(&Tick0);
+ srand(Tick0);
mask_bit = rand();
memcpy(masking_key, &mask_bit, 4);
}
-ssize_t cwebsocket_client_write_data(cwebsocket_client *websocket, const char *data, uint64_t payload_len, opcode code) {
+int cwebsocket_client_write_data(cwebsocket_client *websocket, const char *data, uint64_t payload_len, opcode code) {
if((websocket->state & WEBSOCKET_STATE_OPEN) == 0) {
- syslog(LOG_DEBUG, "cwebsocket_client_write_data: websocket closed");
+ WS_DEBUG("client_write_data: websocket closed");
cwebsocket_client_onerror(websocket, "websocket closed");
return -1;
}
- uint32_t header_length = 6 + (payload_len > 125 ? 2 : 0) + (payload_len > 0xffff ? 8 : 0);
+ uint32_t header_length = 6 + (payload_len > 125 ? 2 : 0) + (payload_len > 0xffff ? 6 : 0);
uint8_t masking_key[4];
uint8_t header[header_length];
- ssize_t bytes_written;
+ int bytes_written;
cwebsocket_client_create_masking_key(masking_key);
header[0] = (code | 0x80);
@@ -808,7 +1043,7 @@ ssize_t cwebsocket_client_write_data(cwebsocket_client *websocket, const char *d
header[13] = masking_key[3];
}
else {
- syslog(LOG_CRIT, "cwebsocket_client_write_data: frame too large");
+ WS_DEBUG("client_write_data: frame too large");
cwebsocket_client_close(websocket, 1009, "frame too large");
return -1;
}
@@ -827,74 +1062,86 @@ ssize_t cwebsocket_client_write_data(cwebsocket_client *websocket, const char *d
bytes_written = cwebsocket_client_write(websocket, framebuf, frame_length);
if(bytes_written == -1) {
- syslog(LOG_ERR, "cwebsocket_client_write_data: error: %s", strerror(errno));
- cwebsocket_client_onerror(websocket, strerror(errno));
+ WS_DEBUG("client_write_data: error: %d", bytes_written);
return -1;
}
- syslog(LOG_DEBUG, "cwebsocket_client_write_data: bytes_written=%zu, frame_length=%i, payload_len=%lld, payload=%s\n",
+ WS_DEBUG("client_write_data: bytes_written=%zu, frame_length=%i, payload_len=%lld, payload=%s\n",
bytes_written, frame_length, (long long)payload_len, data);
return bytes_written;
}
void cwebsocket_client_close(cwebsocket_client *websocket, uint16_t code, const char *message) {
+ int code32 = 0;
- if((websocket->state & WEBSOCKET_STATE_OPEN) == 0 || websocket->fd < 1) {
+ if(websocket->state == 0) {
return;
}
-#ifdef ENABLE_THREADS
- pthread_mutex_lock(&websocket->lock);
- websocket->state = WEBSOCKET_STATE_CLOSING;
- pthread_mutex_unlock(&websocket->lock);
+#ifdef ENABLE_SSL
+ if((websocket->state & WEBSOCKET_STATE_OPEN) != 0) {
#else
- websocket->state = WEBSOCKET_STATE_CLOSING;
+ if((websocket->state & WEBSOCKET_STATE_OPEN) != 0 && websocket->fd > 0) {
#endif
- syslog(LOG_DEBUG, "cwebsocket_client_close: code=%i, message=%s\n", code, message);
+#ifdef ENABLE_THREADS
+ pthread_mutex_lock(&websocket->lock);
+ websocket->state = WEBSOCKET_STATE_CLOSING;
+ pthread_mutex_unlock(&websocket->lock);
+#else
+ websocket->state = WEBSOCKET_STATE_CLOSING;
+#endif
- int code32 = 0;
- if(code > 0) {
- code = code ? htons(code) : htons(1005);
- int message_len = (message == NULL) ? 0 : strlen(message) + 2;
- uint8_t close_frame[message_len];
- close_frame[0] = code & 0xFF;
- close_frame[1] = (code >> 8);
- code32 = (close_frame[0] << 8) + (close_frame[1]);
- int i;
- for(i=0; i<message_len; i++) {
- close_frame[i+2] = message[i];
+ WS_DEBUG("client_close: code=%i, message=%s\n", code, message);
+
+ if(code > 0) {
+ code = code ? htons(code) : htons(1005);
+ int message_len = (message == NULL) ? 2 : strlen(message) + 2;
+ uint8_t close_frame[message_len];
+ close_frame[0] = code & 0xFF;
+ close_frame[1] = (code >> 8);
+ code32 = (close_frame[0] << 8) + (close_frame[1]);
+ int i;
+ for(i=0; i<message_len; i++) {
+ close_frame[i+2] = message[i];
+ }
+ cwebsocket_client_send_control_frame(websocket, CLOSE, "CLOSE", close_frame, message_len);
+ }
+ else {
+ cwebsocket_client_send_control_frame(websocket, CLOSE, "CLOSE", NULL, 0);
}
- cwebsocket_client_send_control_frame(websocket, CLOSE, "CLOSE", close_frame, message_len);
- }
- else {
- cwebsocket_client_send_control_frame(websocket, CLOSE, "CLOSE", NULL, 0);
}
#ifdef ENABLE_SSL
- if(websocket->ssl != NULL) {
- SSL_shutdown(websocket->ssl);
- SSL_free(websocket->ssl);
- }
- if(websocket->sslctx != NULL) {
- SSL_CTX_free(websocket->sslctx);
- }
-#else
- if(shutdown(websocket->fd, SHUT_WR) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_close: unable to shutdown websocket: %s", strerror(errno));
- }
- char buf[1];
- while(read(websocket->fd, buf, 1) > 0) { buf[0] = '\0'; }
- if(close(websocket->fd) == -1) {
- syslog(LOG_ERR, "cwebsocket_client_close: error closing websocket: %s\n", strerror(errno));
- cwebsocket_client_onclose(websocket, 1011, strerror(errno));
+ if(websocket->flags & WEBSOCKET_FLAG_SSL) {
+ WS_DEBUG("ssl_client_close: code=%i, message=%s\n", code, message);
+
+ mbedtls_ssl_close_notify( &websocket->ssl );
+
+ mbedtls_net_free( &websocket->ssl_net_ctx );
+ mbedtls_x509_crt_free( &websocket->cacert );
+ mbedtls_ssl_free( &websocket->ssl );
+ mbedtls_ssl_config_free( &websocket->conf );
+ mbedtls_ctr_drbg_free( &websocket->ctr_drbg );
+ mbedtls_entropy_free( &websocket->entropy );
+ }else {
+#endif
+ if(shutdown(websocket->fd, SHUT_WR) == -1) {
+ WS_DEBUG("cwebsocket_client_close: unable to shutdown websocket: %s", strerror(errno));
+ }
+ char buf[1];
+ while(read(websocket->fd, buf, 1) > 0) { buf[0] = '\0'; }
+ if(close(websocket->fd) == -1) {
+ WS_DEBUG("cwebsocket_client_close: error closing websocket: %s\n", strerror(errno));
+ }
+#ifdef ENABLE_SSL
}
- websocket->fd = 0;
#endif
-
cwebsocket_client_onclose(websocket, code32, message);
+ websocket->fd = 0;
+
#ifdef ENABLE_THREADS
pthread_mutex_lock(&websocket->lock);
websocket->state = WEBSOCKET_STATE_CLOSED;
@@ -904,7 +1151,6 @@ void cwebsocket_client_close(cwebsocket_client *websocket, uint16_t code, const
websocket->state = WEBSOCKET_STATE_CLOSED;
#endif
- syslog(LOG_DEBUG, "cwebsocket_client_close: websocket closed\n");
websocket->state = 0;
if(websocket->flags & WEBSOCKET_FLAG_AUTORECONNECT) {
@@ -912,33 +1158,33 @@ void cwebsocket_client_close(cwebsocket_client *websocket, uint16_t code, const
}
}
-ssize_t inline cwebsocket_client_read(cwebsocket_client *websocket, void *buf, int len) {
+ssize_t cwebsocket_client_read(cwebsocket_client *websocket, void *buf, int len) {
#ifdef ENABLE_SSL
return (websocket->flags & WEBSOCKET_FLAG_SSL) ?
- SSL_read(websocket->ssl, buf, len) :
+ mbedtls_ssl_read(&websocket->ssl, buf, len ) :
read(websocket->fd, buf, len);
#else
return read(websocket->fd, buf, len);
#endif
}
-ssize_t inline cwebsocket_client_write(cwebsocket_client *websocket, void *buf, int len) {
+ssize_t cwebsocket_client_write(cwebsocket_client *websocket, void *buf, int len) {
#ifdef ENABLE_THREADS
ssize_t bytes_written;
pthread_mutex_lock(&websocket->write_lock);
- #ifdef USESSL
- bytes_written = (websocket->flags & WEBSOCKET_FLAG_SSL) ?
- SSL_write(websocket->ssl, buf, len) :
- write(websocket->fd, buf, len);
- #else
- bytes_written = write(websocket->fd, buf, len);
- #endif
+#ifdef ENABLE_SSL
+ bytes_written = (websocket->flags & WEBSOCKET_FLAG_SSL) ?
+ mbedtls_ssl_write(&websocket->ssl, buf, len ) :
+ write(websocket->fd, buf, len);
+#else
+ bytes_written = write(websocket->fd, buf, len);
+#endif
pthread_mutex_unlock(&websocket->write_lock);
return bytes_written;
#else
#ifdef ENABLE_SSL
return (websocket->flags & WEBSOCKET_FLAG_SSL) ?
- SSL_write(websocket->ssl, buf, len) :
+ mbedtls_ssl_write(&websocket->ssl, buf, len) :
write(websocket->fd, buf, len);
#else
return write(websocket->fd, buf, len);
@@ -952,20 +1198,41 @@ void cwebsocket_client_onopen(cwebsocket_client *websocket) {
}
}
-void cwebsocket_client_onmessage(cwebsocket_client *websocket, cwebsocket_message *message) {
+void cwebsocket_client_onmessage(cwebsocket_client *websocket, cwebsocket_dsp_message *message) {
if(websocket->subprotocol != NULL && websocket->subprotocol->onmessage != NULL) {
- websocket->subprotocol->onmessage(websocket, message);
+ uint64_t len;
+ websocket->message.opcode = message->opcode;
+
+ for (len = 0; len < message->payload_len; len += MAX_CHUNK_SIZE){
+ if (len + MAX_CHUNK_SIZE > message->payload_len){
+ websocket->message.chunk_len = (message->payload_len - len);
+ memcpy(websocket->message.payload, &message->payload[len], (message->payload_len - len));
+ websocket->message.payload[(message->payload_len - len)] = '\0';
+ } else {
+ websocket->message.chunk_len = MAX_CHUNK_SIZE;
+ memcpy(websocket->message.payload, &message->payload[len], MAX_CHUNK_SIZE);
+ websocket->message.payload[MAX_CHUNK_SIZE] = '\0';
+ }
+ websocket->message.chunk_pos = len;
+ websocket->message.payload_len = message->payload_len;
+ websocket->subprotocol->onmessage(websocket);
+ }
}
}
void cwebsocket_client_onclose(cwebsocket_client *websocket, int code, const char *message) {
if(websocket->subprotocol != NULL && websocket->subprotocol->onclose != NULL) {
- websocket->subprotocol->onclose(websocket, code, message);
+ strncpy(websocket->message.payload, message, MAX_CHUNK_SIZE);
+ websocket->code = code;
+ websocket->message.payload_len = strlen(message);
+ websocket->subprotocol->onclose(websocket);
}
}
void cwebsocket_client_onerror(cwebsocket_client *websocket, const char *error) {
if(websocket->subprotocol != NULL && websocket->subprotocol->onerror != NULL) {
- websocket->subprotocol->onerror(websocket, error);
+ strncpy(websocket->message.payload, error, MAX_CHUNK_SIZE);
+ websocket->message.payload_len = strlen(error);
+ websocket->subprotocol->onerror(websocket);
}
}
@@ -26,65 +26,212 @@
#define CWEBSOCKET_CLIENT_H
#include <time.h>
+#include <sys/time.h>
+#include <strings.h>
#include <ctype.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <sys/resource.h>
+#include <errno.h>
+#include "sys/socket.h"
+#include "netdb.h"
+#include "arpa/inet.h"
#include "common.h"
+#ifdef ENABLE_THREADS
+#include "pthread.h"
+#endif
+
+/**
+ * @file client.h
+ * @brief WebSocket API
+ */
+
+/**
+ * @ingroup lteiftop
+ * @defgroup netwebsocket WebSocket
+ * @brief WebSocket interface
+ * @{
+ */
+
#define WEBSOCKET_FLAG_AUTORECONNECT (1 << 1)
+#define WEBSOCKET_FLAG_PROXY (1 << 5)
+
+#define WEBSOCKET_SUBPROTOCOL_MAX 4
#ifdef __cplusplus
extern "C" {
#endif
+/**
+ * @defgroup websockcomstr Structure for common interface
+ * Data structure for common interface
+ * @{
+ */
+
typedef struct _cwebsocket {
int fd;
int retry;
char *uri;
uint8_t flags;
uint8_t state;
+ char *proxy_addr;
+ char *proxy_port;
+ char **headers;
+ int num_headers;
#ifdef ENABLE_SSL
- SSL_CTX *sslctx;
- SSL *ssl;
+ mbedtls_ssl_context ssl;
+ mbedtls_net_context ssl_net_ctx;
+ mbedtls_ssl_config conf;
+ mbedtls_x509_crt cacert;
+ mbedtls_x509_crt clicert;
+ mbedtls_pk_context pkey;
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
#endif
#ifdef ENABLE_THREADS
pthread_t thread;
pthread_mutex_t lock;
pthread_mutex_t write_lock;
#endif
+ cwebsocket_app_message message;
+ int code;
size_t subprotocol_len;
cwebsocket_subprotocol *subprotocol;
- cwebsocket_subprotocol *subprotocols[];
+ cwebsocket_subprotocol *subprotocols[WEBSOCKET_SUBPROTOCOL_MAX];
} cwebsocket_client;
typedef struct {
cwebsocket_client *socket;
- cwebsocket_message *message;
+ cwebsocket_dsp_message *message;
} cwebsocket_client_thread_args;
// "public"
-void cwebsocket_client_init(cwebsocket_client *websocket, cwebsocket_subprotocol *subprotocols[], int subprotocol_len);
+
+/**
+ * @brief Initialized the client connection on a websocket
+ *
+ * @param[in] websocket : Data structure for common interface
+ * @param[in] subprotocols : The array information for sub protocol
+ * @param[in] subprotocol_len : Actual size of the subprotocol.
+ *
+ * @retval On success, 0 is returned. On error, -1 is returned.
+ *
+ * @detail Initialized the client connection on a websocket
+ *
+ */
+int cwebsocket_client_init(cwebsocket_client *websocket, cwebsocket_subprotocol **subprotocols, int subprotocol_len);
+
+/**
+ * @brief Initialized the ssl information on a websocket
+ *
+ * @param[in] websocket : Data structure for common interface
+ * @param[in] cert_name : Certificate name in file system
+ * @param[in] pers : Personalization data (Device specific identifiers)
+ * (Can be NULL)
+ *
+ * @retval On success, 0 is returned. On error, -1 is returned.
+ *
+ * @detail Initialized the ssl information on a websocket
+ *
+ */
+int cwebsocket_client_ssl_init(cwebsocket_client *websocket, char *cert_name, char *cli_cert, char *cli_key, char *passphrase);
+
+/**
+ * @brief Conneted to the websocket server
+ *
+ * @param[in] websocket : Data structure for common interface.(Set the server name to the uri)
+ *
+ * @retval On success, 0 is returned. On error, -1 is returned.
+ *
+ * @detail Conneted to the websocket server
+ *
+ */
int cwebsocket_client_connect(cwebsocket_client *websocket);
+/**
+ * @brief Read the packet data from the websocket server
+ *
+ * @param[in] websocket : Data structure for common interface.
+ *
+ * @retval On success, Read() shall return the length of the message in bytes. On error, -1 is returned.
+ * On finish, 0 is returne.
+ *
+ * @detail Read the packet data from the websocket server
+ *
+ */
int cwebsocket_client_read_data(cwebsocket_client *websocket);
-ssize_t cwebsocket_client_write_data(cwebsocket_client *websocket, const char *data, uint64_t len, opcode code);
-void cwebsocket_client_run(cwebsocket_client *websocket);
+
+/**
+ * @brief Wrote the packet data to the websocket server
+ *
+ * @param[in] websocket : Data structure for common interface.
+ *
+ * @retval On success, Write() shall return the length of the message in bytes. On error, -1 is returned.
+ *
+ * @detail Wrote the packet data to the websocket server
+ *
+ */
+int cwebsocket_client_write_data(cwebsocket_client *websocket, const char *data, uint64_t len, opcode code);
+
+/**
+ * @brief Closed the websocket session to server
+ *
+ * @param[in] websocket : Data structure for common interface.
+ * @param[in] code : Closed code. (Refer to chapter 7.4 of RFC6455.)
+ * @param[in] reason : Closed reason.
+ *
+ * @retval Nothing
+ *
+ * @detail Closed the websocket session to server
+ *
+ */
+
void cwebsocket_client_close(cwebsocket_client *websocket, uint16_t code, const char *reason);
-void cwebsocket_client_listen(cwebsocket_client *websocket);
+
+/**
+ * @brief Set the proxy address for websocket
+ *
+ * @param[in] websocket : Data structure for common interface.
+ * @param[in] proxy_addr : Proxy address.
+ * @param[in] proxy_port : Proxy port.
+ *
+ * @retval Nothing
+ *
+ * @detail Set the proxy address for websocket
+ *
+ */
+void cwebsocket_client_set_proxy(cwebsocket_client *websocket, char *proxy_addr, char *proxy_port);
+
+/**
+ * @brief Released the proxy features for websocket
+ *
+ * @param[in] websocket : Data structure for common interface.
+ *
+ * @retval Nothing
+ *
+ * @detail Released the proxy address for websocket
+ *
+ */
+void cwebsocket_client_unset_proxy(cwebsocket_client *websocket);
// "private"
+void cwebsocket_client_run(cwebsocket_client *websocket);
+void cwebsocket_client_listen(cwebsocket_client *websocket);
void cwebsocket_client_parse_uri(cwebsocket_client *websocket, const char *uri, char *hostname, char *port, char *resource, char *querystring);
int cwebsocket_client_handshake_handler(cwebsocket_client *websocket, const char *handshake_response, char *seckey);
-int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey);
+int cwebsocket_client_read_handshake(cwebsocket_client *websocket, char *seckey, int flags);
int cwebsocket_client_send_control_frame(cwebsocket_client *websocket, opcode opcode, const char *frame_type, uint8_t *payload, int payload_len);
void cwebsocket_client_create_masking_key(uint8_t *masking_key);
-ssize_t inline cwebsocket_client_read(cwebsocket_client *websocket, void *buf, int len);
-ssize_t inline cwebsocket_client_write(cwebsocket_client *websocket, void *buf, int len);
+int cwebsocket_client_read(cwebsocket_client *websocket, void *buf, int len);
+int cwebsocket_client_write(cwebsocket_client *websocket, void *buf, int len);
+
void cwebsocket_client_onopen(cwebsocket_client *websocket);
-void cwebsocket_client_onmessage(cwebsocket_client *websocket, cwebsocket_message *message);
+void cwebsocket_client_onmessage(cwebsocket_client *websocket, cwebsocket_dsp_message *message);
void cwebsocket_client_onclose(cwebsocket_client *websocket, int code, const char *message);
void cwebsocket_client_onerror(cwebsocket_client *websocket, const char *error);
+ssize_t cwebsocket_proxy_client_write(int fd, void *buf, int len);
+int cwebsocket_proxy_client_handshake_handler(cwebsocket_client *websocket, const char *handshake_response);
+int cwebsocket_proxy_client_read_handshake(cwebsocket_client *websocket);
+/**@}*/
+
#ifdef __cplusplus
}
#endif
@@ -23,25 +23,26 @@
*/
#include "common.h"
+#include "mbedtls/base64.h"
+#include "mbedtls/sha1.h"
+
char* cwebsocket_base64_encode(const unsigned char *input, int length) {
- BIO *bmem, *b64;
- BUF_MEM *bptr;
- b64 = BIO_new(BIO_f_base64());
- bmem = BIO_new(BIO_s_mem());
- b64 = BIO_push(b64, bmem);
- BIO_write(b64, input, length);
- BIO_flush(b64);
- BIO_get_mem_ptr(b64, &bptr);
- char *buff = (char *)malloc(bptr->length);
- memcpy(buff, bptr->data, bptr->length-1);
- buff[bptr->length-1] = '\0';
- BIO_free_all(b64);
+
+ unsigned char buffer[128];
+ size_t olen;
+
+ mbedtls_base64_encode(buffer, sizeof( buffer ), &olen, input, length );
+
+ char *buff = (char *)malloc(olen);
+ memcpy(buff, buffer, olen-1);
+ buff[olen-1] = '\0';
+
return buff;
}
void cwebsocket_print_frame(cwebsocket_frame *frame) {
- syslog(LOG_DEBUG, "cwebsocket_print_frame: fin=%i, rsv1=%i, rsv2=%i, rsv3=%i, opcode=%#04x, mask=%i, payload_len=%lld\n",
+ WS_DEBUG("print_frame: fin=%i, rsv1=%i, rsv2=%i, rsv3=%i, opcode=%#04x, mask=%i, payload_len=%lld\n",
frame->fin, frame->rsv1, frame->rsv2, frame->rsv3, frame->opcode, frame->mask, frame->payload_len);
}
@@ -53,6 +54,6 @@ char* cwebsocket_create_key_challenge_response(const char *seckey) {
memcpy(sha1buf, seckey, seckey_len);
memcpy(&sha1buf[seckey_len], GUID, 36);
unsigned char sha1_bytes[20];
- SHA1((const unsigned char *)sha1buf, total_len, sha1_bytes);
+ mbedtls_sha1((const unsigned char *)sha1buf, total_len, sha1_bytes);
return cwebsocket_base64_encode((const unsigned char *)sha1_bytes, sizeof(sha1_bytes));
}
@@ -28,31 +28,36 @@
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
-#include <syslog.h>
#include <string.h>
-#include <errno.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <openssl/sha.h>
-#include <openssl/hmac.h>
-#include <openssl/evp.h>
-#include <openssl/bio.h>
-#include <openssl/buffer.h>
+
#include "utf8.h"
+#include "sys/socket.h"
+
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
+//#define ENABLE_WEBSOCKET_DEBUG
+
+#ifdef ENABLE_WEBSOCKET_DEBUG
+#define WS_DEBUG(...) printf(__VA_ARGS__)
+#else
+#define WS_DEBUG(...)
+#endif
+
+//#define ENABLE_SSL
+
#ifdef ENABLE_SSL
- #include <openssl/rand.h>
- #include <openssl/ssl.h>
- #include <openssl/err.h>
+#include "mbedtls/config.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/net.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/error.h"
+#if defined(MBEDTLS_SSL_CACHE_C)
+#include "mbedtls/ssl_cache.h"
+#endif
#endif
#if defined(__linux__)
@@ -72,11 +77,11 @@
(char)(((p & ((uint64_t)0xff << 48)) >> 48) & 0xff), (char)(((p & ((uint64_t)0xff << 56)) >> 56) & 0xff) }
#ifndef CWS_HANDSHAKE_BUFFER_MAX
- #define CWS_HANDSHAKE_BUFFER_MAX 256 // bytes
+ #define CWS_HANDSHAKE_BUFFER_MAX 1024 // bytes
#endif
#ifndef CWS_DATA_BUFFER_MAX
- #define CWS_DATA_BUFFER_MAX 65543 // bytes
+ #define CWS_DATA_BUFFER_MAX 4096 // bytes
#endif
#ifndef CWS_STACK_SIZE_MIN
@@ -103,10 +108,9 @@
extern "C" {
#endif
-typedef enum {
- TRUE,
- FALSE
-} bool;
+#define MAX_CHUNK_SIZE 256
+
+typedef int ssize_t;
typedef enum {
CONTINUATION = 0x00,
@@ -132,20 +136,30 @@ typedef struct {
uint32_t opcode;
uint64_t payload_len;
char *payload;
-} cwebsocket_message;
+} cwebsocket_dsp_message;
+
+typedef struct {
+ uint32_t opcode;
+ uint64_t payload_len;
+ uint64_t chunk_len;
+ uint64_t chunk_pos;
+ char payload[MAX_CHUNK_SIZE + 1];
+} cwebsocket_app_message;
typedef struct {
char *name;
void (*onopen)(void *arg);
- void (*onmessage)(void *arg, cwebsocket_message *message);
- void (*onclose)(void *arg, int code, const char *message);
- void (*onerror)(void *arg, const char *error);
+ void (*onmessage)(void *arg);
+ void (*onclose)(void *arg);
+ void (*onerror)(void *arg);
} cwebsocket_subprotocol;
char* cwebsocket_create_key_challenge_response(const char *seckey);
char* cwebsocket_base64_encode(const unsigned char *input, int length);
void cwebsocket_print_frame(cwebsocket_frame *frame);
+void ws_thread_new( const char *pcName, void( *pxThread )( void *pvParameters ), void *pvArg, int iStackSize, int iPriority);
+
#ifdef __cplusplus
}
#endif
--
2.37.1