
<a name="lua.ref.msg_listener_addr"></a> 
## Name

msg:listener_addr — Get the `recv_via` IP and/or PORT.

<a name="idp24238064"></a> 
## Synopsis

`require('msys.extended.message')`

`msg:listener_addr(flag);`

`flag: string (optional)`<a name="idp24241472"></a> 
## Description

This function returns the IP and/or PORT of the local listener that the message was received on. In particular, it returns the component of the sockaddr, in human-readable form, as indicated by the flag. The value of the flag parameter can be `ip`, `port` or `all`. The default input parameter is `all`. That is, if `flag` is `nil`, then this returns the same string as if `all` was passed as the parameter.

<a name="lua.ref.msg_listener_addr.example"></a> 


```
require("msys.extended.message");

local mod = {};

function mod:validate_data(msg, ac, vctx)
  print(msg:listener_addr('ip'));
    -- "10.1.2.3"
  print(msg:listener_addr('port'));
      -- "25"
  print(msg:listener_addr('all'));
      -- "10.1.2.3:25"
  print(msg:listener_addr()); -- defaults to 'all'
      -- "10.1.2.3:25"
  return msys.core.VALIDATE_CONT;
end

msys.registerModule("myMod", mod);
```

<a name="idp24249040"></a> 
## See Also

[msg:reception_peer](/momentum/3/3-reference/3-reference-lua-ref-msg-reception-peer)

msg listener addr Get the recv via IP and or PORT msg listener addr flag This function returns the IP and or PORT of the local listener that the message was received on In particular it returns the component of the sockaddr in human readable form as indicated by the...

msg:listener_addr

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