diff --git a/.gitmodules b/.gitmodules
index f6454d0..345da44 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
 [submodule "libtgvoip"]
 	path = libtgvoip
 	url = https://github.com/danog/libtgvoip
-[submodule "backward-cpp"]
-	path = backward-cpp
-	url = https://github.com/bombela/backward-cpp
diff --git a/backward-cpp b/backward-cpp
deleted file mode 160000
index 857bc8f..0000000
--- a/backward-cpp
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 857bc8fc311e6e990539be691be8c8a6f98b1be5
diff --git a/libtgvoip b/libtgvoip
index ff2ccbd..b09ce7f 160000
--- a/libtgvoip
+++ b/libtgvoip
@@ -1 +1 @@
-Subproject commit ff2ccbd985fc9e42ab224ca40221f047f8c2be43
+Subproject commit b09ce7f5e418b1a09a22e3dc290e5f8218b1a7fe
diff --git a/main.cpp b/main.cpp
index cbad8c6..28b9679 100644
--- a/main.cpp
+++ b/main.cpp
@@ -273,7 +273,8 @@ void VoIP::parseConfig() {
         memset(cfg.statsDumpFilePath, 0, sizeof(cfg.statsDumpFilePath));
     }
     Php::Value shared_config = self["configuration"]["shared_config"];
-    ServerConfig::GetSharedInstance()->Update(shared_config);
+    std::map<std::string, std::string> copyconfig(shared_config);
+    ServerConfig::GetSharedInstance()->Update(copyconfig);
     inst->SetConfig(&cfg);
 
     char *key = (char *) malloc(256);
@@ -304,6 +305,7 @@ void VoIP::parseConfig() {
         }
 
         eps.push_back(Endpoint(endpoints[i]["id"], (int32_t)endpoints[i]["port"], v4addr, v6addr, EP_TYPE_UDP_RELAY, pTag));
+        eps.push_back(Endpoint(endpoints[i]["id"], (int32_t)endpoints[i]["port"], v4addr, v6addr, EP_TYPE_TCP_RELAY, pTag));
         free(pTag);
     }