python - blocking recv() returns empty line instead of actual data -

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i'm working on python client supposed converse c programmed server. answers few recognised commands "ok" (the server part works when test netcat client). python client gets ok 1 out of 4 times (and empty lines rest of time). don't why socket set blocking figure receive don't know what.

here have. "info" object few strings stored in it, before loop works , bit simplified readability : i'm supposed receive welcome message send team name of connected player receive position.

try:     s = socket.socket(socket.af_inet, socket.sock_stream) except socket.error, msg:     print 'failed create socket. error code: ' + str(msg[0]) + ' , error message : ' + msg[1]     sys.exit();  try:     remote_ip = socket.gethostbyname(info.host) except socket.gaierror:     print "hostname not resolved. exiting"     sys.exit()  s.setblocking(1) s.settimeout(60) s.connect((remote_ip, info.port))  data = s.recv(1024) print data team = info.team + "\n" s.sendall(team) data = s.recv(1024) print data  while 42:     msg = raw_input('>> ')     s.sendall(msg + "\n")     data = s.recv(1024)     if data == "":         break     else:         print data  s.shutdown(socket.shut_wr) s.close()

it seems me receive : cast data ascii ord() see it. guess there's 3 unprintable lines before "ok" in response server sends you. identify catch them in new loop.


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