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<?xml version="1.0" encoding="utf-8"?> |
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<html> |
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<head> |
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<title>KGS Protocol Description</title> |
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<!-- |
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Copyright (C) 2003 Marc Lehmannn <pcg@goof.com> |
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|
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You can redistribute and/or modify this document under the terms of |
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the GNU General Public License as published by the Free Software |
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Foundation; either version 2 of the License, or (at your option) any |
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later version. |
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|
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This document is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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--> |
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</head> |
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<body> |
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|
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<h1>KGS Protocol Description</h1> |
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|
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<p>This XML document describes the KGS protocol. It is also used |
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to automatically generate the perl parser for all the messages and |
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structures in the protocol. Adapting it to other languages should be |
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trivial.</p> |
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|
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<p>If you feel you need to update the visual appearance of this |
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document, feel free to look at <tt>doc/doc2html.xsl</tt> and improve |
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it.</p> |
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|
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<h2>Structure and conventions of this document and the protocol</h2> |
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|
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<p>"Send" means messages send from the client to the server, while |
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"received" means messages send by the server to the client.</p> |
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|
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<p>Everything on the wire is in little-endian format (what a shame).</p> |
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|
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<p>Primitive types are mostly integers (signed |
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"<code>I</code><bits>", unsigned "<code>U</code><bits>"), |
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ascii strings ("<code>username</code>"), or zero-terminated |
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UCS2-Strings ("<code>STRING</code>"). Yes, I know java is supposed to |
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do UTF-16, but no implementation seems to care...</p> |
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|
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<p>For the rest, go figure or bug me, Marc Lehmann <pcg@goof.com></p> |
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|
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<h2>Stream and message structure.</h2> |
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|
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<p>After connecting to the server, a handshake byte is sent. It's |
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the major version number of the protocol the client expects to |
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receive. Version 3 and 4 are mostly the same, except that Version 4 |
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clients expect server messages to be compressed, version 3 clients |
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not.</p> |
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|
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<p>The server sends back his protocol number, which is always 3 in |
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the current protocol. Most of the protocol variation is determined by |
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the server using the client version that is used in the initial login |
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message, not the initial handshake byte.</p> |
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|
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<p>After the initial handshake, the client sends uncompressed |
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messages, while the server sends back a zlib-compressed |
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stream (<a href="http://rfc1950.x42.com/">rfc1950</a> and <a |
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href="http://rfc1950.x42.com/">rfc1951</a>).</p> |
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|
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<p>All messages have the same header:</p> |
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|
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<struct name="message_header" send="yes" recv="yes"> |
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<member name="_unknown" type="U16"/> |
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<member name="length" type="U16"/> |
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The length is the length of the full message including the header. |
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<member name="type" type="U16"/> |
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If the type is >= 0x4000 this is a message for a specific channel. The channel |
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number is always the next U16. |
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</struct> |
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|
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<h2>Primitive types used in the protocol.</h2> |
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|
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<p>Baaah... not much yet.</p> |
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|
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<type name="username" type="A" length="12"/> |
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<type name="roomname" type="S" length="25"/><!-- argh, how horribly broken --> |
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<type name="locale" type="A" length="5"/> |
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<type name="flag" type="U8" multiplier="1"/> |
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<type name="komi16" type="I16" multiplier="2"/> |
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<type name="komi32" type="I32" multiplier="2"/> |
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<type name="result" type="I32" multiplier="2"/> |
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<type name="score" type="I32" multiplier="4"/> |
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<type name="time" type="U32" multiplier="1000"/> |
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|
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<h2>Constants, enumeration and set types used in the protocol.</h2> |
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|
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<p>Baaah... not yet.</p> |
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|
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<h2>Structs used in send & receive messages</h2> |
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|
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<struct name="user" class="KGS::User"> |
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<member name="name" type="username"/> |
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<member name="flags" type="U32" default="1"/> |
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</struct> |
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|
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<struct name="rules" class="KGS::Rules"> |
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<member name="ruleset" type="U8"/> |
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<member name="size" type="U8"/> |
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<member name="handicap" type="U8"/> |
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<member name="komi" type="komi16"/> |
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<member name="timesys" type="U8"/> |
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<member name="time" type="U32"/> |
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<member name="interval" type="U32"/> |
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byo-yomi time / canadian time |
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<member name="count" type="U16"/> |
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periods / moves |
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</struct> |
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|
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<h2>Structs used in send messages</h2> |
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|
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<message type="0000" name="login" send="yes"> |
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<member name="ver_major" type="U32" default="2"/> |
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<member name="ver_minor" type="U32" default="4"/> |
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<member name="ver_micro" type="U32" default="67"/> |
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<member name="name" type="username"/> |
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<member name="password " type="U64" default="0"/> |
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Password is a number calculated as follows (VERY insecure, basically plaintext!): |
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password = 0; for char in characters do password ← password * 1055 + ascii_code (char); |
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<member name="guest" type="flag" default="1"/> |
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<member name="_unknown3" type="U16" default="0"/> |
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<member name="locale" type="locale" default='"en_US"'/> |
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<member name="clientver" type="DATA" default='"1.4.1_01:Swing app:Sun Microsystems Inc."'/> |
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The "default" is the java vm version, not exactly he client version. However, |
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you should always send a tetx like "Jonathan's C client bersion 0.6" or somesuch, |
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so the server can, if necessary, block broken clients or client versions. |
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</message> |
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|
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<message type="0014" name="server_stats" send="yes"> |
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Request server statistics. |
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</message> |
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|
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<message type="0021" name="pic_req" send="yes"> |
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Request a user picture from the server. |
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<member name="name" type="username"/> |
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</message> |
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|
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<message type="0021" name="pic_upload" send="yes"> |
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Same code as pic_req, but with an additional data section that |
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must contain a JPEG image that is <=7KB. It must have 141×200 pixels. |
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<member name="name" type="username"/> |
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<member name="data" type="DATA"/> |
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</message> |
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|
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<message type="0100" name="gnotice" send="yes"> |
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Send a global message. Maybe. Never tried, for obvious reasons :/ |
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<member name="notice" type="STRING"/> |
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</message> |
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|
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<message type="0318" name="list_rooms" send="yes"> |
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List the rooms in a specific group/category. |
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<member name="group" type="U8"/> |
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</message> |
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|
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<message type="031a" name="new_room" send="yes"> |
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Create a new room. Not verified. |
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<member name="name" type="username"/> |
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<member name="i1" type="U32" default="0"/> |
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<member name="b1" type="U8" default="0"/> |
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<member name="b2" type="U8" default="255"/> |
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<member name="b3" type="U8" default="255"/> |
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<member name="group" type="U8" default="1"/> |
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<member name="name" type="STRING"/> |
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<member name="description" type="STRING"/> |
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<member name="flags" type="U8"/> |
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0x10 .. private room etc.. see code |
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</message> |
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|
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<message type="4300" name="join_room" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="user" type="user"/> |
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</message> |
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|
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<message type="4301" name="msg_room" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="name" type="username"/> |
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<member name="message" type="STRING"/> |
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</message> |
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|
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<message type="4302" name="part_room" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="name" type="username"/> |
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</message> |
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|
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<message type="4305" name="new_game" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="id" type="U16"/> |
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<member name="gametype" type="U32"/> |
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<member name="rules" type="rules"/> |
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<member name="notes" type="STRING"/> |
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</message> |
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|
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<message type="430b" name="req_games" send="yes"> |
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request to update room game list (send once per minute) |
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<member name="channel" type="U16"/> |
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</message> |
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|
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<message type="4319" name="req_desc" send="yes"> |
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Request room description. |
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<member name="channel" type="U16"/> |
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</message> |
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|
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<message type="4400" name="send_chal" send="yes"> |
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No idea. |
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<member name="channel" type="U16"/> |
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<member name="black" type="username"/> |
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<member name="white" type="username"/> |
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More following... TREE or challenge. |
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</message> |
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|
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<message type="4403" name="join_game" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="user" type="user"/> |
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</message> |
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|
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<message type="4404" name="part_game" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="name" type="username"/> |
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</message> |
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|
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<message type="4405" name="set_tree" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="tree" type="TREE"/> |
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</message> |
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|
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<message type="4408" name="get_tree" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="node" type="U32"/> |
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</message> |
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|
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<message type="440c" name="claim_win" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="_byte" type="U8 "/> |
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Player colour maybe? Unclear. |
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</message> |
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|
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<message type="440d" name="add_time" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="time" type="U32"/> |
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<member name="player" type="U8"/> |
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</message> |
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|
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<message type="440f" name="grant_undo" send="yes"> |
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<member name="channel" type="U16"/> |
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</message> |
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|
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<message type="4410" name="resign_game" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="player" type="U8"/> |
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</message> |
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|
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<message type="441a" name="set_teacher" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="name" type="username"/> |
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</message> |
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|
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<message type="4422" name="add_user" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="othername" type="username"/> |
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<member name="name" type="username"/>; # gives user access to the game (to what? ;) |
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</message> |
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|
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<message type="4423" name="set_privacy" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="private" type="U8"/> |
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</message> |
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|
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<message type="4429" name="reject_chal" send="yes"> |
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<member name="channel" type="U16"/> |
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<member name="name" type="username"/> |
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</message> |
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|
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<message type="4433" name="req_result" send="yes"> |
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<member name="channel" type="U16"/> |
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</message> |
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|
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<h2>Structs mainly used in receive messages</h2> |
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|
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<struct name="challenge_defaults"> |
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<member name="gametype" type="U32"/> |
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<member name="size" type="U32"/> |
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<member name="timesys" type="U32"/> |
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<member name="time" type="U32"/> |
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<member name="byo_time" type="U32"/> |
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<member name="byo_periods" type="U32"/> |
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<member name="can_time" type="U32"/> |
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<member name="can_stones" type="U32"/> |
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</struct> |
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|
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<struct name="challenge" class="KGS::Challenge"> |
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<member name="user1" type="user"/> |
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<member name="user2" type="user"/> |
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<member name="gametype" type="U32"/> |
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<member name="rules" type="rules"/> |
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Maybe the rules" are in TREE format. I forgot. |
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</struct> |
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|
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<struct name="game" class="KGS::Game"> |
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<member name="channel" type="U16"/> |
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<member name="type" type="U32"/> |
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<member name="user1" type="user"/> |
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White |
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<member name="user2" type="user"/> |
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Black |
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<member name="user3" type="user"/> |
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Owner |
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<member name="size" type="U32"/> |
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<member name="handicap" type="I32"/> |
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< 0 not fully setup |
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<member name="komi" type="komi32"/> |
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<member name="moves" type="U16"/> |
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<member name="flags" type="U16"/> |
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<member name="observers" type="U32"/> |
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<member name="saved" type="flag"/> |
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<member name="notes" type="STRING" guard-member="handicap" guard-cond="< 0"/> |
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</struct> |
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|
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<struct name="room_obs"> |
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<member name="name" type="roomname"/> |
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<member name="channel" type="U16"/> |
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<member name="flags" type="U32"/> |
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<member name="users" type="U32"/> |
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</struct> |
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|
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<struct name="room" class="KGS::Room"> |
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<member name="channel" type="U16"/> |
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<member name="flags" type="U8"/> |
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<member name="group" type="U8"/> |
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<member name="users" type="U16"/> |
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<member name="games" type="U16"/> |
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<member name="name" type="STRING"/> |
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</struct> |
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|
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<struct name="score" class="KGS::Score"> |
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<member name="score" type="score"/> |
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<member name="territory" type="U32"/> |
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<member name="captures" type="U32"/> |
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<member name="i3" type="U32"/> |
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<member name="f2" type="U32"/> |
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<member name="komi" type="komi32"/> |
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<member name="i4" type="U32"/> |
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Apparently the i3, f2, i4 are zero. |
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</struct> |
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|
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<h2>Receive messages</h2> |
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|
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<message type="0001" name="login" recv="yes"> |
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<member name="result" type="CONSTANT" default='"login ok"'/> |
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<member name="success" type="CONSTANT" default="1"/> |
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</message> |
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|
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<message type="0002" name="login" recv="yes"> |
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<member name="result" type="CONSTANT" default='"guest login ok"'/> |
| 362 |
<member name="success" type="CONSTANT" default="1"/> |
| 363 |
</message> |
| 364 |
|
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<message type="0003" name="login" recv="yes"> |
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<member name="result" type="CONSTANT" default='"login error 3"'/> |
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** maybe more following? ** |
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</message> |
| 369 |
|
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<message type="0004" name="login" recv="yes"> |
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<member name="result" type="CONSTANT" default='"wrong password"'/> |
| 372 |
** maybe more following? ** |
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</message> |
| 374 |
|
| 375 |
<message type="0005" name="login" recv="yes"> |
| 376 |
<member name="result" type="CONSTANT" default='"user unknown"'/> |
| 377 |
** maybe more following? ** |
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</message> |
| 379 |
|
| 380 |
<message type="0006" name="login" recv="yes"> |
| 381 |
<member name="result" type="CONSTANT" default='"user exists"'/> |
| 382 |
** maybe more following? ** |
| 383 |
</message> |
| 384 |
|
| 385 |
<message type="0018" name="login" recv="yes"> |
| 386 |
<member name="result" type="CONSTANT" default='"login error 18"'/> |
| 387 |
** maybe more following? ** |
| 388 |
</message> |
| 389 |
|
| 390 |
<message type="0022" name="login" recv="yes"> |
| 391 |
<!-- "thanks" to jyem for blocking me ;)--> |
| 392 |
<member name="result" type="CONSTANT" default='"user or ip blocked"'/> |
| 393 |
<member name="reason" type="STRING"/> |
| 394 |
</message> |
| 395 |
|
| 396 |
<message type="0013" name="msg_chat" recv="yes"> |
| 397 |
<member name="user1" type="username"/> |
| 398 |
<member name="user2" type="username"/> |
| 399 |
<member name="message" type="STRING"/> |
| 400 |
</message> |
| 401 |
|
| 402 |
<message type="0015" name="stats" recv="yes"> |
| 403 |
<member name="ver_major" type="U16"/> |
| 404 |
<member name="ver_minor" type="U16"/> |
| 405 |
<member name="ver_micro" type="U16"/> |
| 406 |
<member name="boot_time" type="U64"/> |
| 407 |
<member name="users_cur" type="U32"/> |
| 408 |
<member name="users_max" type="U32"/> |
| 409 |
<member name="users_lim" type="U32"/> |
| 410 |
<member name="accts_cur" type="U32"/> |
| 411 |
<member name="accts_max" type="U32"/> |
| 412 |
<member name="unknown1" type="U32"/> |
| 413 |
<member name="work_max" type="U32"/> |
| 414 |
<member name="rooms_cur" type="U32"/> |
| 415 |
<member name="rooms_max" type="U32"/> |
| 416 |
<member name="rooms_lim" type="U32"/> |
| 417 |
<member name="games_cur" type="U32"/> |
| 418 |
<member name="games_max" type="U32"/> |
| 419 |
<member name="games_lim" type="U32"/> |
| 420 |
<member name="results_cur" type="U32"/> |
| 421 |
<member name="results_max" type="U32"/> |
| 422 |
<member name="unknown2" type="U32"/> |
| 423 |
<member name="params_cur" type="U32"/> |
| 424 |
<member name="params_max" type="U32"/> |
| 425 |
<member name="bytes_in" type="U64"/> |
| 426 |
<member name="packets_in" type="U64"/> |
| 427 |
<member name="bytes_out" type="U64"/> |
| 428 |
<member name="packets_out" type="U64"/> |
| 429 |
</message> |
| 430 |
|
| 431 |
<message type="0016" name="idle_warn" recv="yes"> |
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idle warning, autologout soon (10 minutes...) |
| 433 |
</message> |
| 434 |
|
| 435 |
<message type="001b" name="timewarning_default" recv="yes"> |
| 436 |
WILD guess |
| 437 |
<member name="channel" type="U16"/> |
| 438 |
<member name="time" type="U16"/> |
| 439 |
</message> |
| 440 |
|
| 441 |
<message type="001c" name="idle_err" recv="yes"> |
| 442 |
autologout |
| 443 |
</message> |
| 444 |
|
| 445 |
<message type="001d" name="ping" recv="yes"> |
| 446 |
</message> |
| 447 |
|
| 448 |
<message type="0021" name="userpic" recv="yes"> |
| 449 |
<member name="name" type="username"/> |
| 450 |
Reply to pic_req, contains an image in jpeg format. |
| 451 |
<member name="data" type="DATA"/> |
| 452 |
</message> |
| 453 |
|
| 454 |
<message type="0100" name="gnotice" recv="yes"> |
| 455 |
global notice, sent to everybody |
| 456 |
<member name="notice" type="STRING"/> |
| 457 |
</message> |
| 458 |
|
| 459 |
|
| 460 |
<message type="0310" name="priv_room" recv="yes"> |
| 461 |
"permission denied" when joining a room |
| 462 |
<member name="name" type="STRING"/> |
| 463 |
</message> |
| 464 |
|
| 465 |
<message type="0318" name="upd_rooms" recv="yes"> |
| 466 |
<member name="rooms" type="room" array="yes"/> |
| 467 |
</message> |
| 468 |
|
| 469 |
<message type="041c" name="upd_game2" recv="yes"> |
| 470 |
<member name="channel_junk" type="U16"/> |
| 471 |
<member name="game" type="game"/> |
| 472 |
</message> |
| 473 |
|
| 474 |
<message type="0202" name="upd_user" recv="yes"> |
| 475 |
# loc 0" type="chat(?) loc 1 => gameinfo?, loc 2 => game result (more data) |
| 476 |
<member name="location" type="U32"/> |
| 477 |
<member name="user" type="user"/> |
| 478 |
<member name="lotsofinfo" type="DATA" guard-member="location" guard-cond="== 2"/> |
| 479 |
</message> |
| 480 |
|
| 481 |
<h3>Room messages</h3> |
| 482 |
|
| 483 |
<p>Not all room messages are for rooms only, and rooms need to parse |
| 484 |
not only these messages. Orthogonality, what for?</p> |
| 485 |
|
| 486 |
<message type="4300" name="join_room" recv="yes"> |
| 487 |
<member name="channel" type="U16"/> |
| 488 |
<member name="users" type="user" array="yes"/> |
| 489 |
</message> |
| 490 |
|
| 491 |
<message type="4301" name="msg_room" recv="yes"> |
| 492 |
<member name="channel" type="U16"/> |
| 493 |
<member name="name" type="username"/> |
| 494 |
<member name="message" type="STRING"/> |
| 495 |
</message> |
| 496 |
|
| 497 |
<message type="4302" name="part_room" recv="yes"> |
| 498 |
<member name="channel" type="U16"/> |
| 499 |
<member name="user" type="user"/> |
| 500 |
</message> |
| 501 |
|
| 502 |
<message type="4303" name="del_room" recv="yes"> |
| 503 |
<member name="channel" type="U16"/> |
| 504 |
|
| 505 |
</message> |
| 506 |
|
| 507 |
<message type="4304" name="upd_games" recv="yes"> |
| 508 |
<member name="channel" type="U16"/> |
| 509 |
<member name="games" type="game" array="yes"/> |
| 510 |
</message> |
| 511 |
|
| 512 |
<message type="4319" name="desc_room" recv="yes"> |
| 513 |
<member name="channel" type="U16"/> |
| 514 |
<member name="owner" type="username"/> |
| 515 |
<member name="description" type="STRING"/> |
| 516 |
</message> |
| 517 |
|
| 518 |
|
| 519 |
<message type="0411" name="chal_defaults" recv="yes"> |
| 520 |
<member name="channel" type="U16"/> |
| 521 |
<member name="defaults" type="challenge_defaults"/> |
| 522 |
</message> |
| 523 |
|
| 524 |
<h3>Game messages</h3> |
| 525 |
|
| 526 |
<message type="4400" name="upd_chal" recv="yes"> |
| 527 |
Unclear. |
| 528 |
<member name="channel" type="U16"/> |
| 529 |
<member name="challenge" type="challenge"/> |
| 530 |
</message> |
| 531 |
|
| 532 |
<message type="4401" name="upd_game" recv="yes"> |
| 533 |
<member name="channel" type="U16"/> |
| 534 |
<member name="game" type="game"/> |
| 535 |
</message> |
| 536 |
|
| 537 |
<message type="4402" name="del_game" recv="yes"> |
| 538 |
<member name="channel" type="U16"/> |
| 539 |
</message> |
| 540 |
|
| 541 |
<message type="4403" name="upd_observers" recv="yes"> |
| 542 |
<member name="channel" type="U16"/> |
| 543 |
<member name="users" type="user" array="yes"/> |
| 544 |
</message> |
| 545 |
|
| 546 |
<message type="4404" name="del_observer" recv="yes"> |
| 547 |
<member name="channel" type="U16"/> |
| 548 |
<member name="name" type="username"/> |
| 549 |
</message> |
| 550 |
|
| 551 |
<message type="4405" name="set_tree" recv="yes"> |
| 552 |
<member name="channel" type="U16"/> |
| 553 |
<member name="tree" type="TREE"/> |
| 554 |
</message> |
| 555 |
|
| 556 |
<message type="4406" name="upd_tree" recv="yes"> |
| 557 |
<member name="channel" type="U16"/> |
| 558 |
<member name="tree" type="TREE"/> |
| 559 |
</message> |
| 560 |
|
| 561 |
<message type="4407" name="set_node" recv="yes"> |
| 562 |
<member name="channel" type="U16"/> |
| 563 |
<member name="node" type="U32"/> |
| 564 |
</message> |
| 565 |
|
| 566 |
<message type="4409" name="superko" recv="yes"> |
| 567 |
Superko-warning. |
| 568 |
<member name="channel" type="U16"/> |
| 569 |
</message> |
| 570 |
|
| 571 |
<message type="440b" name="final_result" recv="yes"> |
| 572 |
<member name="channel" type="U16"/> |
| 573 |
<member name="blackscore" type="score"/> |
| 574 |
<member name="whitescore" type="score"/> |
| 575 |
</message> |
| 576 |
|
| 577 |
<message type="440e" name="req_undo" recv="yes"> |
| 578 |
<member name="channel" type="U16"/> |
| 579 |
|
| 580 |
</message> |
| 581 |
|
| 582 |
<message type="4410" name="resign_game" recv="yes"> |
| 583 |
<member name="channel" type="U16"/> |
| 584 |
<member name="player" type="U8"/> |
| 585 |
</message> |
| 586 |
|
| 587 |
<message type="441a" name="set_teacher" recv="yes"> |
| 588 |
<member name="channel" type="U16"/> |
| 589 |
<member name="name" type="username"/> |
| 590 |
</message> |
| 591 |
|
| 592 |
<message type="441d" name="owner_left" recv="yes"> |
| 593 |
Unclear. |
| 594 |
<member name="channel" type="U16"/> |
| 595 |
</message> |
| 596 |
|
| 597 |
<message type="441e" name="teacher_left" recv="yes"> |
| 598 |
Unclear. |
| 599 |
<member name="channel" type="U16"/> |
| 600 |
</message> |
| 601 |
|
| 602 |
<message type="4422" name="unknown4422" recv="yes"> |
| 603 |
change teacher? something to do with editing? |
| 604 |
<member name="channel" type="U16"/> |
| 605 |
<member name="name1" type="username"/> |
| 606 |
<member name="name2" type="username"/> |
| 607 |
</message> |
| 608 |
|
| 609 |
<message type="4433" name="req_result" recv="yes"> |
| 610 |
Unclear. |
| 611 |
<member name="channel" type="U16"/> |
| 612 |
# # recv_result(?) |
| 613 |
</message> |
| 614 |
|
| 615 |
<message type="4434" name="unknown4434" recv="yes"> |
| 616 |
<member name="channel" type="U16"/> |
| 617 |
<member name="b1" type="U8"/> |
| 618 |
?? !demonstration game?? |
| 619 |
</message> |
| 620 |
|
| 621 |
</body> |
| 622 |
</html> |
| 623 |
|
