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| author | Max Kellermann <max@duempel.org> | 2011-01-29 09:26:22 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2011-01-29 10:43:54 +0100 |
| commit | f8b09c194fe20192c4ac45697e9d0f00e8a96c2c (patch) | |
| tree | d45c30ce117a7e01431078305ffe2e96d016dc5c /doc | |
| parent | 0e69ad32c16eb6449a8952f894c6f239f2e2c52f (diff) | |
| download | mpd-f8b09c194fe20192c4ac45697e9d0f00e8a96c2c.tar.gz mpd-f8b09c194fe20192c4ac45697e9d0f00e8a96c2c.tar.xz mpd-f8b09c194fe20192c4ac45697e9d0f00e8a96c2c.zip | |
protocol: support client-to-client communication
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/protocol.xml | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/doc/protocol.xml b/doc/protocol.xml index a02a94e32..cf4de27c1 100644 --- a/doc/protocol.xml +++ b/doc/protocol.xml @@ -204,6 +204,19 @@ has been modified. </para> </listitem> + <listitem> + <para> + <returnvalue>subscription</returnvalue>: a client + has subscribed or unsubscribed to a channel + </para> + </listitem> + <listitem> + <para> + <returnvalue>message</returnvalue>: a message was + received on a channel this client is subscribed to; + this event is only emitted when the queue is empty + </para> + </listitem> </itemizedlist> <para> While a client is waiting for <command>idle</command> @@ -1676,5 +1689,105 @@ suffix: mpc</programlisting> </varlistentry> </variablelist> </section> + + <section> + <title>Client to client</title> + + <para> + Clients can communicate with each others over "channels". A + channel is created by a client subscribing to it. More than + one client can be subscribed to a channel at a time; all of + them will receive the messages which get sent to it. + </para> + + <para> + Each time a client subscribes or unsubscribes, the global idle + event <varname>subscription</varname> is generated. In + conjunction with the <command>channels</command> command, this + may be used to auto-detect clients providing additional + services. + </para> + + <para> + A new messages is indicated by the <varname>message</varname> + idle event. + </para> + + <variablelist> + <varlistentry id="command_subscribe"> + <term> + <cmdsynopsis> + <command>subscribe</command> + <arg choice="req"><replaceable>NAME</replaceable></arg> + </cmdsynopsis> + </term> + <listitem> + <para> + Subscribe to a channel. The channel is created if it + does not exist already. The name may consist of + alphanumeric ASCII characters plus underscore, dash, dot + and colon. + </para> + </listitem> + </varlistentry> + + <varlistentry id="command_unsubscribe"> + <term> + <cmdsynopsis> + <command>unsubscribe</command> + <arg choice="req"><replaceable>NAME</replaceable></arg> + </cmdsynopsis> + </term> + <listitem> + <para> + Unsubscribe from a channel. + </para> + </listitem> + </varlistentry> + + <varlistentry id="command_channels"> + <term> + <cmdsynopsis> + <command>channels</command> + </cmdsynopsis> + </term> + <listitem> + <para> + Obtain a list of all channels. The response is a list + of "channel:" lines. + </para> + </listitem> + </varlistentry> + + <varlistentry id="command_readmessages"> + <term> + <cmdsynopsis> + <command>readmessages</command> + </cmdsynopsis> + </term> + <listitem> + <para> + Reads messages for this client. The response is a list + of "channel:" and "message:" lines. + </para> + </listitem> + </varlistentry> + + <varlistentry id="command_sendmessage"> + <term> + <cmdsynopsis> + <command>sendmessage</command> + <arg choice="req"><replaceable>CHANNEL</replaceable></arg> + <arg choice="req"><replaceable>TEXT</replaceable></arg> + </cmdsynopsis> + </term> + <listitem> + <para> + Send a message to the specified channel. + </para> + </listitem> + </varlistentry> + </variablelist> + </section> </chapter> </book> |