Added call functionality to figure out the maximum number of sockets (file descriptors) available on system.

src/network/network.h

@@ -87,6 +87,11 @@ extern const char* net_error_string(int code);
  */
 extern int net_socket_create(int af, int type, int protocol);
 
+/**
+ * Returns the maximum number of file/socket descriptors.
+ */
+extern size_t net_get_max_sockets();
+
 /**
  * A wrapper for the close() function call.
  */