+// these versions are purely for internal use, never sent in network protocol
+// (use Protocol_EnumForNumber and Protocol_NumberToEnum to convert)
+typedef enum protocolversion_e
+{
+ PROTOCOL_UNKNOWN,
+ PROTOCOL_DARKPLACES7, ///< added QuakeWorld-style movement protocol to allow more consistent prediction
+ PROTOCOL_DARKPLACES6, ///< various changes
+ PROTOCOL_DARKPLACES5, ///< uses EntityFrame5 entity snapshot encoder/decoder which is based on a Tribes networking article at http://www.garagegames.com/articles/networking1/
+ PROTOCOL_DARKPLACES4, ///< various changes
+ PROTOCOL_DARKPLACES3, ///< uses EntityFrame4 entity snapshot encoder/decoder which is broken, this attempted to do partial snapshot updates on a QuakeWorld-like protocol, but it is broken and impossible to fix
+ PROTOCOL_DARKPLACES2, ///< various changes
+ PROTOCOL_DARKPLACES1, ///< uses EntityFrame entity snapshot encoder/decoder which is a QuakeWorld-like entity snapshot delta compression method
+ PROTOCOL_QUAKEDP, ///< darkplaces extended quake protocol (used by TomazQuake and others), backwards compatible as long as no extended features are used
+ PROTOCOL_NEHAHRAMOVIE, ///< Nehahra movie protocol, a big nasty hack dating back to early days of the Quake Standards Group (but only ever used by neh_gl.exe), this is potentially backwards compatible with quake protocol as long as no extended features are used (but in actuality the neh_gl.exe which wrote this protocol ALWAYS wrote the extended information)
+ PROTOCOL_QUAKE, ///< quake (aka netquake/normalquake/nq) protocol
+ PROTOCOL_QUAKEWORLD, ///< quakeworld protocol
+ PROTOCOL_NEHAHRABJP, ///< same as QUAKEDP but with 16bit modelindex
+ PROTOCOL_NEHAHRABJP2, ///< same as NEHAHRABJP but with 16bit soundindex
+ PROTOCOL_NEHAHRABJP3 ///< same as NEHAHRABJP2 but with some changes
+}
+protocolversion_t;
+
+/*! \name Message IO functions.
+ * Handles byte ordering and avoids alignment errors
+ * @{
+ */
+
+void MSG_InitReadBuffer (sizebuf_t *buf, unsigned char *data, int size);