So I'm new to this python stuff - and this has me stumped
# server
import SocketServer
PORT = 8037
class myRequestHandle r(SocketServer. StreamRequestHa ndler):
def handle(self):
self.input = self.rfile.read (1024)
print self.input
self.wfile.writ e("blah")
server = SocketServer.TC PServer(("", PORT), myRequestHandle r)
print "listening on port", PORT
server.serve_fo rever()
# client
import socket
HOST = socket.gethostn ame()
PORT = 8037
s = socket.socket(s ocket.AF_INET, socket.SOCK_STR EAM)
s.connect((HOST , PORT))
s.send('Hello, world')
# Fails
data = s.recv(1024)
s.close()
print 'Received', data
Why does s.recv() hang the client? It seems like server is not
handing back "blah", but I'm sure it is.....this should be
easy...(sigh)
4  6778 
Hello, Leonard, data = s.recv(1024)
s.close()
print 'Received', data
Why does s.recv() hang the client? It seems like server is not
handing back "blah", but I'm sure it is.....
I think that the socket buffer is not full (since you are waiting for
1024 and "blah" is not enough).
this should be easy...(sigh)
If it was that easy it won't be interesting ;-)
Have a look at http://www.amk.ca/python/howto/sockets/
HTH.
Miki
"lebo" <le***********@ yahoo.com> wrote in message
news:63******** *************** ***@posting.goo gle.com... So I'm new to this python stuff - and this has me stumped
[sample code]
Why does s.recv() hang the client? It seems like server is not
handing back "blah", but I'm sure it is.....this should be
easy...(sigh)
<gratuitous self-advertisement>
If you're going to OSCON you might like to sign up for the Python Network
Programming tutorial - see http://conferences.oreillynet.com/cs...ew/e_sess/4165
This tutorial is intended to help network programming beginners to write
their own networking code.
</gratuitous self-advertisement>
regards
--
Steve Holden http://www.holdenweb.com/
Python Web Programming http://pydish.holdenweb.com/pwp/
Miki Tebeka wrote:
Hello, Leonard,
data = s.recv(1024)
s.close()
print 'Received', data
Why does s.recv() hang the client? It seems like server is not
handing back "blah", but I'm sure it is.....
I think that the socket buffer is not full (since you are waiting for
1024 and "blah" is not enough).
This is not how the size parameter to recv() is used. It is a
*maximum*, meaning any amount of data from zero bytes (if the
socket is closed) to that value will be returned, with *no*
guarantees how much is actually returned. Often, but absolutely
not always, you will get a whole "line" and newbies will be
deceived into thinking it's enough just to recv(1024) and
carry on, but eventually such code will fail.
-Peter This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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