udp.h File Reference

Basic functions to receive and send UDP packets. More...

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Detailed Description

Basic functions to receive and send UDP packets.

*** Requesting game information from a server ***

This describes the on-the-wire structure of the request and reply packet of the NetworkGameInfo (see game.h) data.

--- Points of attention ---

--- Request --- Bytes: Description: 2 size of the whole packet, in this case 3 1 type of packet, in this case PACKET_UDP_CLIENT_FIND_SERVER (0) This packet would look like: { 0x03, 0x00, 0x00 }

--- Reply --- Version: Bytes: Description: all 2 size of the whole packet all 1 type of packet, in this case PACKET_UDP_SERVER_RESPONSE (1) all 1 the version of this packet's structure

4+ 1 number of GRFs attached (n) 4+ n * 20 unique identifier for GRF files. Constists of:

3+ 4 current game date in days since 1-1-0 (DMY) 3+ 4 game introduction date in days since 1-1-0 (DMY)

2+ 1 maximum number of companies allowed on the server 2+ 1 number of companies on the server 2+ 1 maximum number of spectators allowed on the server

1+ var string with the name of the server 1+ var string with the revision of the server 1+ 1 the language run on the server (0 = any, 1 = English, 2 = German, 3 = French) 1+ 1 whether the server uses a password (0 = no, 1 = yes) 1+ 1 maximum number of clients allowed on the server 1+ 1 number of clients on the server 1+ 1 number of spectators on the server 1 & 2 2 current game date in days since 1-1-1920 (DMY) 1 & 2 2 game introduction date in days since 1-1-1920 (DMY) 1+ var string with the name of the map 1+ 2 width of the map in tiles 1+ 2 height of the map in tiles 1+ 1 type of map: (0 = temperate, 1 = arctic, 2 = desert, 3 = toyland) 1+ 1 whether the server is dedicated (0 = no, 1 = yes)

Definition in file udp.h.


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