Python Socket problem

[Fredrik Lundh]

Sam Schulenburg wrote:
> I am trying to use sockets ( I really do not know what I am doing) and
> have obtained the following results:
>
> from socket import *
> Sock = socket(AF_INET,SOCK_STREAM)
> MySocket = Sock.connect(('192.168.100.101',80))
> MySocket.send('DoTheTest \n\r\0')
> MySocket.close()
>
> The above will send the DOTheTest mesage to 192.168.100.101 and the the
> DoTheTest will execute on the server. What I need to do next is obtain
> the responce from the test.

you're close.  but connect doesn't return a new socket;
it connects the existing socket to a remote server:

from socket import *
Sock = socket(AF_INET,SOCK_STREAM)
Sock.connect(('localhost',80))
Sock.send('DoTheTest \n\r\0')
Sock.close()

(and yes, "execute DoTheTest" sounds a bit dangerous, but I
assume you know what you're doing...)

client sockets can only be used once.  to make another
request from the same program, create a new socket.

> I tried the following code:
>
> Sock = socket(AF_INET,SOCK_STREAM)
> MySocket = Sock.connect(('192.168.100.101',80))
> Data = MySocket.recv()
> MySocket.close()
> print Data

clients connect, servers bind, listen and accept:

from socket import *

# create a listening socket
Sock = socket(AF_INET,SOCK_STREAM)

# bind it to a port
Sock.bind(("", 80))

# create a small listening queue
Sock.listen(1)

while 1:

    # wait for a client to connect
    NewSock, Info = Sock.accept()
    print "incoming connection from", Info

    # read a package from the client
    print NewSock.recv(1024)

    NewSock.close()

    break # shutdown

(note that the listening socket can be reused; just
remove the "break" to have the loop process another
command)

for more examples (and better ways to do this), see the
"network" chapter in the eff-bot guide.

</F>

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