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annotate mod_tcpproxy/README.markdown @ 4282:281a864e7472

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mod_pubsub_feeds: Don't skip publishing items after an existing one I encountered a feed which was backwards, such that older entries were considered first and then it would skip newer entries. This may however run into trouble if the feed contains more items than what's persisted in pubsub.
author Kim Alvefur <zash@zash.se>
date Mon, 30 Nov 2020 15:17:29 +0100
parents 8de50be756e5
children 3804332c204e
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1 ---
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2 labels:
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3 - 'Stage-Beta'
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4 summary: 'TCP-over-XMPP :)'
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5 ...
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7 Introduction
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8 ============
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9
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10 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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12 awkward in some environments, and impossible in (for example) Javascript
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13 inside a web browser.
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15 Details
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16 =======
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17
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18 Using mod\_tcpproxy an XMPP client (including those using BOSH) can
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19 initiate a pipe to a given TCP/IP address and port. This implementation
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20 uses the [In-Band Bytestreams](http://xmpp.org/extensions/xep-0047.html)
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21 XEP, simply extended with 2 new attributes in a new namespace, host and
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22 port.
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24 An example Javascript client can be found in the web/ directory of
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25 mod\_tcpproxy in the repository.
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26
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27 Configuration
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28 =============
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29
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30 Just add tcpproxy as a component, for example:
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32 `Component "tcp.example.com" "tcpproxy"`
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34 Protocol
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35 ========
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36
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37 A new stream is opened like this:
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38
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39 ``` {.xml}
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40 <iq type="set" id="newconn1" to="tcp.example.com">
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41 <open xmlns='http://jabber.org/protocol/ibb'
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42         sid='connection1'
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43         stanza='message'
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44 xmlns:tcp='http://prosody.im/protocol/tcpproxy'
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45 tcp:host='example.com'
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46 tcp:port='80' />
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47 </iq>
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48 ```
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50 The stanza attribute (currently) MUST be 'message', and a block-size, if
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51 given, is (currently) ignored.
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53 In response to this stanza you will receive a result upon connection
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54 success, or an error if the connection failed. You can then send to the
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55 connection by sending message stanzas as described in the IBB XEP.
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56 Incoming data will likewise be delivered as messages.
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58 Compatibility
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59 =============
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61 ----- --------------
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62 0.7 Works
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63 0.6 Doesn't work
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64 ----- --------------
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66 Todo
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67 ====
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68
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69 - ACLs (restrict to certain JIDs, and/or certain target hosts/ports)
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70 - Honour block-size (undecided)
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71 - Support iq stanzas for data transmission
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72 - Signal to start SSL/TLS on a connection