Subj : Sending message to user from protocol
To   : deepthaw
From : Digital Man
Date : Thu Nov 12 2020 05:41 pm

  Re: Sending message to user from protocol
  By: deepthaw to All on Thu Nov 12 2020 06:32 pm

 > I'm working on a bash script to generate a URL to download a requested file
 > via http which can then work as a protocol.
 >
 > All of it works, except for sending a message back to the user. I know very
 > little about socket programming, would this involve the socket passed via
 > the %h parameter?
 >
 > I tried something similar to:
 >
 > echo -e "test message\n" | netcat $1 $2
 >
 > Where $1 and $2 map to %i %h (client ip, socket descriptor). But I don't see
 > anything on the client's end.

'%h' would be a socket descriptor. 'netcat' does not accept a socket descriptor as an argument. I think you're passing the socket descriptor where netcat would expect to find a port (TCP or UDP).

The easiest way to send a message to a user is to write (append) to the file data/msgs/####.msg where #### is the 0-padded user number. You could pass this value as an argument to your script using the %4 specifier.
http://wiki.synchro.net/config:cmdline

The node won't know it has a message waiting until you set the "MSGW" flag for the node. This can be done using the exec/node utility.

All of these could be done via JS, so consider just writing your entire script in JS.
-- 
                                            digital man

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