diff -r a0573014ff4f -r c42949cfdd92 project_files/frontlib/nonblocksockets.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/nonblocksockets.h	Thu May 31 18:54:40 2012 +0200
@@ -0,0 +1,51 @@
+/*
+ * nonblocksockets.h
+ *
+ *  Created on: 31.05.2012
+ *      Author: simmax
+ */
+
+#ifndef NONBLOCKSOCKETS_H_
+#define NONBLOCKSOCKETS_H_
+
+#include <SDL_net.h>
+#include <stdbool.h>
+
+typedef struct {
+	TCPsocket sock;
+	SDLNet_SocketSet sockset;
+} _NonBlockSocket;
+
+typedef _NonBlockSocket *NonBlockSocket;
+
+/**
+ * Close the indicated socket, free its memory and set it to NULL.
+ * If the socket is already NULL, nothing happens.
+ */
+void flib_nbsocket_close(NonBlockSocket *socket);
+
+/**
+ * Try to accept a connection from a listening socket.
+ * if localOnly is true, this will only accept connections which came from 127.0.0.1
+ * Returns NULL if nothing can be accepted.
+ */
+NonBlockSocket flib_nbsocket_accept(TCPsocket listensocket, bool localOnly);
+
+/**
+ * Attempt to receive up to maxlen bytes from the socket, but does not
+ * block if nothing is available.
+ * Returns the ammount of data received, 0 if there was nothing to receive,
+ * or a negative number if the connection was closed or an error occurred.
+ */
+int flib_nbsocket_recv(NonBlockSocket sock, void *data, int maxlen);
+
+/**
+ * We can't do a nonblocking send over SDL_net, so this function just forwards
+ * to SDLNet_TCP_Send for convenience, which blocks until all data is sent or an
+ * error occurs. The ammount of data actually sent is returned, negative value on error.
+ */
+static inline int flib_nbsocket_blocksend(NonBlockSocket sock, void *data, int len) {
+	return SDLNet_TCP_Send(sock->sock, data, len);
+}
+
+#endif /* NONBLOCKSOCKETS_H_ */