Socket Program Hangs

Question

I'm trying to get some basic networking going in python. Here's the snippet of the program that does the actual communication:

Client Side

 # open socket and connect to port
 sock = socket(AF_INET, SOCK_STREAM)
 sock.connect((regHost, regPort))
 # prepare flos for data
 outFlo = sock.makefile(mode='w')
 inFlo = sock.makefile(mode='r')
 outFlo.write(queryString)
 outFlo.flush()
 print "finished writing"
 tmp = inFlo.readline()
 print tmp
 outFlo.close()
 inFlo.close()
 sock.close()

Server Side

 print 'Spawned thread'
 inFlo = self.sock.makefile(mode='r')
 outFlo = self.sock.makefile(mode='w')
 outFlo.write('test writing\n')
 outFlo.flush()
 inFlo.close()
 outFlo.close()
 self.sock.close()
 print 'Closed socket'
 print 'Exiting thread'

The program seems to be hanging on the call to inFlo.readline() in the client side. Any help would be much appreciated.

Answer 1

The error was that I forgot to add a \n at the end of one of my strings. Due to that, the program was hanging on the call to inFlo.readline().