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mod_tcpproxy/README.markdown

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mod_tcpproxy/README.markdown @ 4941:e7b9bc629ecc

mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +0200
parent 4853:3804332c204e
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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 block-size='4096'
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44 stanza='message'
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45 xmlns:tcp='http://prosody.im/protocol/tcpproxy'
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46 tcp:host='example.com'
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47 tcp:port='80' />
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48 </iq>
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49 ```
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51 The stanza attribute (currently) MUST be 'message', and block-size is
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52 (currently) ignored.
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54 In response to this stanza you will receive a result upon connection
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55 success, or an error if the connection failed. You can then send to the
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56 connection by sending message stanzas as described in the IBB XEP.
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57 Incoming data will likewise be delivered as messages.
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58
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59 Compatibility
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60 =============
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61
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62 ----- --------------
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63 0.7 Works
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64 0.6 Doesn't work
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65 ----- --------------
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67 Todo
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68 ====
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69
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70 - ACLs (restrict to certain JIDs, and/or certain target hosts/ports)
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71 - Honour block-size
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72 - Support iq stanzas for data transmission
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73 - Signal to start SSL/TLS on a connection