1 files changed, 62 insertions, 0 deletions
diff --git a/src/network/core/udp.h b/src/network/core/udp.h
new file mode 100644
index 000000000..3221e664f
--- /dev/null
+++ b/src/network/core/udp.h
@@ -0,0 +1,62 @@
+/* $Id$ */
+
+#ifndef NETWORK_CORE_UDP_H
+#define NETWORK_CORE_UDP_H
+
+#ifdef ENABLE_NETWORK
+
+/**
+ * @file udp.h Basic functions to receive and send UDP packets.
+ */
+
+///** Sending/receiving of UDP packets **////
+
+void NetworkSendUDP_Packet(SOCKET udp, Packet *p, struct sockaddr_in *recv);
+bool NetworkUDPListen(SOCKET *udp, uint32 host, uint16 port, bool broadcast);
+void NetworkUDPReceive(SOCKET udp);
+
+/**
+ * Function that is called for every received UDP packet.
+ * @param packet      the received packet
+ * @param client_addr the address of the sender of the packet
+ */
+void NetworkHandleUDPPacket(Packet *p, struct sockaddr_in *client_addr);
+
+
+///** Sending/receiving of (large) chuncks of UDP packets **////
+
+
+/** Enum with all types of UDP packets. The order MUST not be changed **/
+enum {
+	PACKET_UDP_CLIENT_FIND_SERVER,   ///< Queries a game server for game information
+	PACKET_UDP_SERVER_RESPONSE,      ///< Reply of the game server with game information
+	PACKET_UDP_CLIENT_DETAIL_INFO,   ///< Queries a game server about details of the game, such as companies
+	PACKET_UDP_SERVER_DETAIL_INFO,   ///< Reply of the game server about details of the game, such as companies
+	PACKET_UDP_SERVER_REGISTER,      ///< Packet to register itself to the master server
+	PACKET_UDP_MASTER_ACK_REGISTER,  ///< Packet indicating registration has succedeed
+	PACKET_UDP_CLIENT_GET_LIST,      ///< Request for serverlist from master server
+	PACKET_UDP_MASTER_RESPONSE_LIST, ///< Response from master server with server ip's + port's
+	PACKET_UDP_SERVER_UNREGISTER,    ///< Request to be removed from the server-list
+	PACKET_UDP_CLIENT_GET_NEWGRFS,   ///< Requests the name for a list of GRFs (GRF_ID and MD5)
+	PACKET_UDP_SERVER_NEWGRFS,       ///< Sends the list of NewGRF's requested.
+	PACKET_UDP_END                   ///< Must ALWAYS be on the end of this list!! (period)
+};
+
+void NetworkSend_GRFIdentifier(Packet *p, const GRFConfig *c);
+void NetworkSend_NetworkGameInfo(Packet *p, const NetworkGameInfo *info);
+
+void NetworkRecv_GRFIdentifier(NetworkClientState *cs, Packet *p, GRFConfig *c);
+void NetworkRecv_NetworkGameInfo(NetworkClientState *cs, Packet *p, NetworkGameInfo *info);
+
+/**
+ * Function that is called for every GRFConfig that is read when receiving
+ * a NetworkGameInfo. Only grfid and md5sum are set, the rest is zero. This
+ * function must set all appropriate fields. This GRF is later appended to
+ * the grfconfig list of the NetworkGameInfo.
+ * @param config the GRF to handle
+ */
+void HandleIncomingNetworkGameInfoGRFConfig(GRFConfig *config);
+
+#endif /* ENABLE_NETWORK */
+
+#endif /* NETWORK_CORE_UDP_H */