From: Victor Reyes <victor.reyes@...>
Date: 2007-09-21T02:21:57+09:00
Subject: Couple of questions about TCPServer.new and TCPSocket.new

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Hello Team,

In an attempt to learn about TCP Socket programming, I wrote the following
mini tiny ruby pgms.
Although they kind of work, I am having some problems. Here they are:

This is under AIX 5.3.

ruby -v
ruby 1.8.6 (2007-03-13 patchlevel 0) [powerpc-aix5.3.0.0]

1 - I start the server side first.
2 - Start client side.
3 - The client gets the msg session.write("Communication Established!!!").
4 - The server just "sits" there, when I expect the output of the date
command on the server console.
5 - If kill the client side, the server now executes the date command and
the actual output is displayed.
6 - The client side never gets the last msg from the server side.
7 - I kill the server side.

Your help will be appreciated.

SERVER SIDE

require 'socket'

port = 19557

server = TCPServer.new("", port)

while (session = server.accept)
        session.write("Communication Established!!!")
        input = session.gets
        system("#{input}")
        session.write("Request Received From Client:#{input}")
        session.close
end


CLIENT SIDE

require 'socket'

streamSock = TCPSocket.new( 'nycserv-deva-app1nim', 19557 )
streamSock.send( "date\n", 1937 )
str = streamSock.recv( 100 )
print str
puts "\n"
str = streamSock.recv( 100 )
print str
puts "\n"
streamSock.close


ACTUAL RUN:


Server:
root@app1nim:/u/victor/executables/ruby>ruby ts5  (Here it just waits)


Client:
root@app2nim # ruby tc5
Communication Established!!!

NOW I KILL THE CLIENT SINCE NOTHING IS GOING ON ON THE SERVER:

tc5:8:in `recv': Interrupt
        from tc5:8
===> /u/victor/executables/ruby
root@app2nim #


NOW THE SERVER DISPLAY THESE MSGS:

ts5:10: warning: Insecure world writable dir /usr/local in PATH, mode
0240777
Thu Sep 20 13:18:56 EDT 2007


Thank you

Victor

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