I'm trying to implement a function that reads from a socket ( TCP/IP based protocol with prompt ).
Server sends:
Welcoming you\r\n
Please login\r\n
<login>
I need this function to be a wrapper for gets (readline), that would read each line of the 3. The problem is that only the first two lines end in CRLF( or only \n doesn't really matter ). I've tried rewriting something like:
def _gets()
c = ''
answer = ''
while true
c = @sock.sysread( 1 )
if c == "" then
break
end
#adding the character to the string
answer = answer+c
if c.match("\n") then
break
end
end
return answer
end
The bad part is that sysread hangs on trying to read the socket.
I've used this pseudo code in pearl, but there the sysread function would return >0 or 0 in case of error. [ if ( sysread( $sock, $char, 1) >0 ) {....} ]
I'm not interested in time outing the sysread function nor using a single recv function, so please, can someone please tell me a solution?
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Andi