prosody-modules
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mod_tcpproxy/README.markdown

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mod_tcpproxy/README.markdown @ 5472:b80b6947b079

mod_http_oauth2: Always show early errors to user Before having validated the client_id, communicating an error back to the client via redirect would make this an open redirect, so we may just as well skip past that logic, and especially the warning log message.
author Kim Alvefur <zash@zash.se>
date Thu, 18 May 2023 13:43:17 +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