revert BeginRefreshHost()

Classes/gframe/duelclient.cpp

@@ -4164,11 +4164,19 @@ void DuelClient::BeginRefreshHost() {
 	remotes.clear();
 	hosts.clear();
 	event_base* broadev = event_base_new();
+#ifdef _IRR_ANDROID_PLATFORM_
+    //get local ip address in android style
+    int ipaddr = android::getLocalAddr(mainGame->appMain);
+    if (ipaddr == -1) {
+        return;
+    }
+#else
     char hname[256];
 	gethostname(hname, 256);
 	hostent* host = gethostbyname(hname);
 	if(!host)
 		return;
+#endif
     SOCKET reply = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
     sockaddr_in reply_addr;
     memset(&reply_addr, 0, sizeof(reply_addr));
@@ -4193,6 +4201,20 @@ void DuelClient::BeginRefreshHost() {
     sockTo.sin_port = htons(7920);
     HostRequest hReq;
     hReq.identifier = NETWORK_CLIENT_ID;
+#ifdef _IRR_ANDROID_PLATFORM_
+    local.sin_addr.s_addr = ipaddr;
+    SOCKET sSend = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    if (sSend == INVALID_SOCKET)
+        return;
+    int opt = TRUE;
+    setsockopt(sSend, SOL_SOCKET, SO_BROADCAST, (const char*) &opt, sizeof opt);
+    if (bind(sSend, (sockaddr*) &local, sizeof(sockaddr)) == SOCKET_ERROR) {
+        closesocket(sSend);
+        return;
+    }
+    sendto(sSend, (const char*) &hReq, sizeof(HostRequest), 0, (sockaddr*) &sockTo, sizeof(sockaddr));
+    closesocket(sSend);
+#else
     for(int i = 0; i < 8; ++i) {
 		if(host->h_addr_list[i] == 0)
 			break;
@@ -4211,6 +4233,7 @@ void DuelClient::BeginRefreshHost() {
 		sendto(sSend, (const char*)&hReq, sizeof(HostRequest), 0, (sockaddr*)&sockTo, sizeof(sockaddr));
 		closesocket(sSend);
 	}
+#endif
 }
 int DuelClient::RefreshThread(event_base* broadev) {
 	event_base_dispatch(broadev);