Extend SNI support for mqtt, websockets and raw tls

Author: caiohamamura

app/modules/mqtt.c

@@ -989,6 +989,7 @@ static sint8 mqtt_socket_do_connect(struct lmqtt_userdata *mud)
   if(mud->conf.flags.secure)
   {
     NODE_DBG("mqtt_socket_do_connect using espconn_secure\n");
+    
     espconn_status = espconn_secure_connect(&mud->pesp_conn);
   }
   else
@@ -1020,6 +1021,13 @@ static void socket_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
   NODE_DBG("socket_dns_found success: ");
   NODE_DBG(IPSTR, IP2STR(&(ipaddr->addr)));
   NODE_DBG("\n");
+  #ifdef CLIENT_SSL_ENABLE
+  if(mud->conf.flags.secure)
+  {
+    NODE_DBG("socket_dns_found configuring hostname for SNI\n");
+    espconn_secure_set_hostname( name );
+  }
+  #endif
 
   if(mqtt_socket_do_connect(mud) != ESPCONN_OK) {
       NODE_DBG("socket_dns_found, got DNS but connect failed\n");

app/modules/tls.c

@@ -174,6 +174,7 @@ static void tls_socket_dns_cb( const char* domain, const ip_addr_t *ip_addr, tls
     lua_gc(L, LUA_GCRESTART, 0);
   } else {
     os_memcpy(ud->pesp_conn.proto.tcp->remote_ip, &addr.addr, 4);
+		espconn_secure_set_hostname( domain );
     espconn_secure_connect(&ud->pesp_conn);
   }
 }
@@ -204,7 +205,6 @@ static int tls_socket_connect( lua_State *L ) {
   ud->pesp_conn.proto.tcp->remote_port = port;
 
   espconn_secure_set_hostname(domain);
-  
   espconn_regist_connectcb(&ud->pesp_conn, (espconn_connect_callback)tls_socket_onconnect);
   espconn_regist_disconcb(&ud->pesp_conn, (espconn_connect_callback)tls_socket_ondisconnect);
   espconn_regist_reconcb(&ud->pesp_conn, (espconn_reconnect_callback)tls_socket_onreconnect);

app/websocket/websocketclient.c

@@ -712,6 +712,7 @@ static void dns_callback(const char *hostname, ip_addr_t *addr, void *arg) {
 
   if (ws->isSecure) {
     NODE_DBG("secure connecting \n");
+    espconn_secure_set_hostname( hostname );
     espconn_secure_connect(conn);
   }
   else {