Revision as of 05:13, 17 August 2022

The /sockudp command allows you to send data to a specific address at a specific port destination (See UDP sockets).

Note: if /sockudp fails, it sets $sock().wserr to the error value, and trigger on sockwrite with $sockerr set etc.

Synopsis

/sockudp -bntkduz [bindip] <name> [port] <ipaddress> <port> [numbytes] [text|%var|&binvar]

Switches

• -b - Indicates that you are specifying the numbytes value which is the number of bytes you want send, the full line is sent otherwise
• -n - Appens a $crlf to the line being sent if it's not a &binvar or if does not already end with a $crlf
• -t - Forces mIRC to send anything beginning with a & as plain text
• -k - Keeps the socket opened
• -d - Means you have specified the ip address as the bind address
• -u - Enables dual stack socket to support both ipv4 and ipv6 for the listening socket, if that is available, you must bind to an ipv6 ip address

Parameters

• [bindip] - If -d has been specified, the ip address you want to use as the bind address.
• <name> - The sockname name.
• [port] - If specified, the local port to use, otherwise mIRC choose one randomly.
• <ipaddress> - The ip address you want to send to information to, use you localhost 127.0.0.1 with -k to create a listening socket.
• <port> - The port you want to send to information to, that's your listening port if you create a server.
• [numbytes] - If -b has been specified, indicates the number of bytes you want to send.
• [text|%var|&binvar] - If specified, the message you want to send, can be a binary variable. You don't want to specify that parameter if you create a server.

Example

alias gettime {
  ; Set a NULL byte binary variable.
  bset &null 1 0
 
  ; Open a UDP connection to Time-a.nist.gov = 129.6.15.28
  sockudp -k gettime 129.6.15.28 37 &null
}
 
ON *:UDPREAD:gettime: {
  ; Read the reply.
  sockread -f &time
 
  var %time $bvar(&time,1,$bvar(&time,0))
 
  ; Convert to binary, remove spaces.
  var %bin $regsubex(%time, /(\d+)\s?/g, $base(\1, 10, 2, 8))
 
  ; Get the current unix time in decimal system.
  var %time = $base(%bin, 2, 10)
 
  ; Print the time.
  echo -ag Currnt Time/Date: $asctime($calc(%time - 2208988800), yyyy-mm-dd hh:nn:ss TT)
 
  ; Close the socket
  sockclose $sockname
}

Compatibility

Added: mIRC v5.5
Added on: 08 Jan 1999
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.

See also

• List of commands
• List of identifiers
• on udpread
• on sockwrite
• $sockerr