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72 lines
4.7 KiB
Markdown
72 lines
4.7 KiB
Markdown
# PyLink FAQ
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## Startup errors
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### I get errors like "ImportError: No module named 'yaml'" when I start PyLink
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You are missing dependencies - re-read https://github.com/GLolol/PyLink/blob/master/README.md#installation
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### I get errors like "yaml.scanner.ScannerError: while scanning for the next token, found character '\t' that cannot start any token"
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You must use **spaces** and not tabs to indent your configuration file! (`\t` is the escaped code for a tab, which is disallowed by YAML)
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## Linking / Connection issues
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### PyLink won't connect to my network!
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As a general guide, you should check the following before asking for support:
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- Is the target network's IRCd showing failed connection attempts?
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- If not:
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1) Is PyLink connecting to the right port (i.e. one the IRCd is listening on?)
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2) Is the target network's IRCd actually binding to the port you're trying to use? If there is a port conflict with another program, the IRCd may fail to bind but *still start* on other ports that are free.
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3) Is the target port firewalled on the target machine?
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4) Is there a working connection between the source and target servers? Use ping to test this, as sometimes routing issues between providers can cause servers to become unreachable.
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- If your servers are purposely blocking ping, it's up to you to find another way to test this! 😬
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- If so:
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1) Check for recvpass/sendpass/server hostname/IP mismatches - usually the IRCd will tell you if you're running into one of these, provided you have the right server notices enabled (consult your IRCd documentation for how to do this).
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2) Make sure you're not connecting with SSL on a non-SSL port, or vice versa.
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If these steps haven't helped you so far, it doesn't hurt to ask for help. :)
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### My networks keep disconnecting with SSL errors!
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See https://github.com/GLolol/PyLink/issues/463 - this seems to be caused by a regression in OpenSSL 1.0.2, which ships with distros such as Ubuntu 16.04 LTS. Unfortunately, the only workarounds so far are to either disable SSL/TLS, or wrap a plain IRC connection in an external service (stunnel, OpenVPN, etc.)
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### I turned autoconnect for PyLink on, and now I'm getting errors!
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PyLink does not support inbound connections - much like regular services such as Atheme or Anope, it only connects outwards *to* IRCds. (If you don't understand what this means, it means you should turn autoconnect **off** for PyLink)
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## Relay issues
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### Does everyone need to install PyLink Relay for it to work?
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**No!** Only the PyLink administrator needs to host a PyLink instance, as each can connect to multiple networks. Everyone else only needs to add a link block on their IRCd.
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InterJanus-style links between PyLink daemons are not supported yet; see https://github.com/GLolol/PyLink/issues/99 for any progress regarding that.
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### What are PyLink's advantages over Janus?
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PyLink provides, in no particular order:
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- More complete support for modern IRCds (UnrealIRCd 4.x, InspIRCd 2.0, charybdis 4, Nefarious IRCu, etc.).
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- A flexible, maintainable codebase extensible beyond Relay.
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- Cross platform functionality (*nix, Windows, and probably others too).
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- Proper protocol negotiation leading to fewer SQUIT/DoS possibilities:
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- Better support for channel modes such as +fjMOR, etc.
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- Proper support for nick length limits with relayed users.
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### My IRCd SQUITs the relay server with errors like "Bad nickname introduced"!
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First, check whether the SQUIT message includes the nick that triggered the netsplit. If this nick includes any characters not allowed in regular IRC, such as the slash ("/"), or is otherwise an invalid nick (e.g. beginning with a hyphen or number), this likely indicates a bug in PyLink Relay. These problems should be reported on the issue tracker.
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However, if the nick mentioned is legal on IRC, this issue is likely caused by a max nick length misconfiguration: i.e. the relay server is introducing nicks too long for the target network. This can be fixed by setting the `maxnicklen` option in the affected network's PyLink `server:` block to the same value as that network's `005` `NICKLEN` (that is, the `NICKLEN=<num>` value in `/raw version`).
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### Clientbot doesn't relay both ways!
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Load the `relay_clientbot` plugin. https://github.com/GLolol/PyLink/blob/e1fab8c/example-conf.yml#L303-L306
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### Relay is occasionally dropping users from channels!
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This usually indicates a serious bug in either Relay or PyLink's protocol modules, and should be reported as an issue. When asking for help, please state which IRCds your PyLink instance is linking to: specifically, which IRCd the missing users are *from* and which IRCd the users are missing *on*. Also, be prepared to send debug logs as you reproduce the issue!
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