diff -r b66eef8c8092 -r 906e72caea7b project_files/frontlib/socket.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/socket.h	Sun Jun 03 01:24:18 2012 +0200
@@ -0,0 +1,72 @@
+/*
+ * Sockets for TCP networking.
+ *
+ * This layer offers some functionality over what SDL_net offers directly: listening
+ * sockets (called acceptors here) can be bound to port 0, which will make them listen
+ * on a random unused port, if one can be found. To support this feature, you can also
+ * query the local port that an acceptor is listening on.
+ *
+ * Further, we support nonblocking reads and writes here. The writes are buffered (TODO),
+ * so that all data will be accepted, and you can configure a maximum buffer size
+ * where the connection will be terminated.
+ *
+ * In order to ensure buffered data is actually sent out, you should regularly call
+ * the tick function on your sockets.
+ */
+
+#ifndef SOCKET_H_
+#define SOCKET_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+
+struct _flib_tcpsocket;
+typedef struct _flib_tcpsocket *flib_tcpsocket;
+
+struct _flib_acceptor;
+typedef struct _flib_acceptor *flib_acceptor;
+
+/**
+ * Create a new acceptor which will listen for incoming TCP connections
+ * on the given port. If port is 0, this will listen on a random
+ * unused port which can then be queried with flib_acceptor_listenport.
+ *
+ * Can return NULL on error.
+ */
+flib_acceptor flib_acceptor_create(uint16_t port);
+
+/**
+ * Return the port on which the acceptor is listening.
+ */
+uint16_t flib_acceptor_listenport(flib_acceptor acceptor);
+
+/**
+ * Close the acceptor, free its memory and set it to NULL.
+ * If the acceptor is already NULL, nothing happens.
+ */
+void flib_acceptor_close(flib_acceptor *acceptorptr);
+
+/**
+ * Try to accept a connection from an acceptor (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.
+ */
+flib_tcpsocket flib_socket_accept(flib_acceptor acceptor, bool localOnly);
+
+/**
+ * Close the socket, free its memory and set it to NULL.
+ * If the socket is already NULL, nothing happens.
+ */
+void flib_socket_close(flib_tcpsocket *socket);
+
+/**
+ * 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_socket_nbrecv(flib_tcpsocket sock, void *data, int maxlen);
+
+int flib_socket_send(flib_tcpsocket sock, void *data, int len);
+
+#endif /* SOCKET_H_ */