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General clean-up in socket howto.

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Collin Winter 2007-09-10 00:47:20 +00:00
parent 58721bca11
commit 4c6a140b7f
1 changed files with 23 additions and 26 deletions
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15
Doc/howto/sockets.rst
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@ -61,8 +61,7 @@ Roughly speaking, when you clicked on the link that brought you to this page,
your browser did something like the following:: your browser did something like the following::
#create an INET, STREAMing socket #create an INET, STREAMing socket
s = socket.socket( s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.AF_INET, socket.SOCK_STREAM)
#now connect to the web server on port 80 #now connect to the web server on port 80
# - the normal http port # - the normal http port
s.connect(("www.mcmillan-inc.com", 80)) s.connect(("www.mcmillan-inc.com", 80))
@ -100,7 +99,7 @@ connections. If the rest of the code is written properly, that should be plenty.
OK, now we have a "server" socket, listening on port 80. Now we enter the OK, now we have a "server" socket, listening on port 80. Now we enter the
mainloop of the web server:: mainloop of the web server::
while 1: while True:
#accept connections from outside #accept connections from outside
(clientsocket, address) = serversocket.accept() (clientsocket, address) = serversocket.accept()
#now do something with the clientsocket #now do something with the clientsocket
@ -185,9 +184,9 @@ Assuming you don't want to end the connection, the simplest solution is a fixed
length message:: length message::
class mysocket: class mysocket:
'''demonstration class only """demonstration class only
- coded for clarity, not efficiency - coded for clarity, not efficiency
''' """
def __init__(self, sock=None): def __init__(self, sock=None):
if sock is None: if sock is None:
@ -204,8 +203,7 @@ length message::
while totalsent < MSGLEN: while totalsent < MSGLEN:
sent = self.sock.send(msg[totalsent:]) sent = self.sock.send(msg[totalsent:])
if sent == 0: if sent == 0:
raise RuntimeError, \ raise RuntimeError("socket connection broken")
"socket connection broken"
totalsent = totalsent + sent totalsent = totalsent + sent
def myreceive(self): def myreceive(self):
@ -213,8 +211,7 @@ length message::
while len(msg) < MSGLEN: while len(msg) < MSGLEN:
chunk = self.sock.recv(MSGLEN-len(msg)) chunk = self.sock.recv(MSGLEN-len(msg))
if chunk == '': if chunk == '':
raise RuntimeError, \ raise RuntimeError("socket connection broken")
"socket connection broken"
msg = msg + chunk msg = msg + chunk
return msg return msg