author | Kim Alvefur <zash@zash.se> |
Mon, 14 Sep 2015 13:38:02 +0200 | |
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parent 1824 | 8de50be756e5 |
child 4857 | 3804332c204e |
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--- |
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labels: |
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- 'Stage-Beta' |
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summary: 'TCP-over-XMPP :)' |
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... |
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Introduction |
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============ |
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It happens occasionally that I would like to use the XMPP server as a |
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11 |
generic proxy for connecting to another service. It is especially |
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awkward in some environments, and impossible in (for example) Javascript |
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inside a web browser. |
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Details |
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======= |
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18 |
Using mod\_tcpproxy an XMPP client (including those using BOSH) can |
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initiate a pipe to a given TCP/IP address and port. This implementation |
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uses the [In-Band Bytestreams](http://xmpp.org/extensions/xep-0047.html) |
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XEP, simply extended with 2 new attributes in a new namespace, host and |
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port. |
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An example Javascript client can be found in the web/ directory of |
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mod\_tcpproxy in the repository. |
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Configuration |
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============= |
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Just add tcpproxy as a component, for example: |
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`Component "tcp.example.com" "tcpproxy"` |
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Protocol |
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======== |
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A new stream is opened like this: |
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``` {.xml} |
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<iq type="set" id="newconn1" to="tcp.example.com"> |
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<open xmlns='http://jabber.org/protocol/ibb' |
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sid='connection1' |
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stanza='message' |
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xmlns:tcp='http://prosody.im/protocol/tcpproxy' |
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tcp:host='example.com' |
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tcp:port='80' /> |
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</iq> |
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``` |
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50 |
The stanza attribute (currently) MUST be 'message', and a block-size, if |
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given, is (currently) ignored. |
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In response to this stanza you will receive a result upon connection |
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success, or an error if the connection failed. You can then send to the |
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connection by sending message stanzas as described in the IBB XEP. |
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Incoming data will likewise be delivered as messages. |
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Compatibility |
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============= |
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----- -------------- |
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0.7 Works |
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0.6 Doesn't work |
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----- -------------- |
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66 |
Todo |
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==== |
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- ACLs (restrict to certain JIDs, and/or certain target hosts/ports) |
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- Honour block-size (undecided) |
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- Support iq stanzas for data transmission |
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- Signal to start SSL/TLS on a connection |