Proper detection whether SCTP is available. Do not update player names on configuration change if network client is running.

src/net/linux/socket_startup.cpp

@@ -22,6 +22,10 @@
 
 #include <net/socket_startup.h>
 
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
 bool
 socket_startup()
 {
@@ -33,3 +37,18 @@ socket_cleanup()
 {
 }
 
+bool
+socket_has_sctp()
+{
+#ifdef IPPROTO_SCTP
+	int test = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
+
+	if (test == -1)
+		return false;
+	close(test);
+	return true;
+#else
+	return false;
+#endif
+}
+

src/net/socket_startup.h

@@ -16,12 +16,14 @@
  *   Free Software Foundation, Inc.,                                       *
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
-/* Socket startup/cleanup functions (required for Win32). */
+/* Socket startup/cleanup/detection functions. */
 #ifndef _SOCKET_STARTUP_H_
 #define _SOCKET_STARTUP_H_
 
 bool socket_startup();
 void socket_cleanup();
 
+bool socket_has_sctp();
+
 #endif
 

src/net/win32/socket_startup.cpp

@@ -66,3 +66,9 @@ socket_cleanup()
 	WSACleanup();
 }
 
+bool
+socket_has_sctp()
+{
+	return false; /* no SCTP on Windows */
+}
+