added server-based ip determination as a fallback to existing methods. Forced Dht publishing as soon as an external ip is known

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1110 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/tcponudp/extaddrfinder.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "util/rsthreads.h"
+
+struct sockaddr ;
+
+class ExtAddrFinder
+{
+	public:
+		ExtAddrFinder() ;
+		~ExtAddrFinder() ;
+
+		bool hasValidIP(struct sockaddr_in *addr) ;
+
+		void start_request() ;
+
+		RsMutex _addrMtx ;
+		struct sockaddr_in *_addr ;
+		bool *_found ;
+		bool *_searching ;
+};