Python re-using same socket and getting problems

I'm using Python to write a simple script that will connect to a host/port using a socket. I know sockets can only be used once which is why I'm not closing the socket at all but when I connect to localhost on port 80 and try a simple command like GET / it works the first time but the second time I execute GET / or any other HTTP command, it doesn't print the output. Here is what I have

import socket
size = 1024
host = 'localhost'
port = 80
def connectsocket(userHost, userPort):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) #TCP socket
    s.connect((userHost, userPort))
    while(1):
        input = raw_input("Command: ")
        s.send(input + '\r\n\r\n') #Send command
        r = s.recv(size) #Recieve output
        prin开发者_StackOverflowt(r)
connectsocket(host, port)

I'd assume this would work but here is a sample output:

amartin@homebox:~$ python socketconn.py
Command: GET /
[BUNCH OF HTML CODE]
Command: GET /


Command:

As you can see it works for the first GET / but not for the second. How can I fix this?

---

Given information from the comments on @samplebias' answer, I think this is similar to what you're looking to accomplish:

import errno
import socket

size = 1024
host = 'localhost'
port = 80


def connectsocket(userHost, userPort):

    while(1):
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # TCP socket
        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        s.connect((userHost, userPort))

        command = raw_input("Command: ")

        s.send(command + '\r\n\r\n')  # Send command
        response = s.recv(size)  # Recieve output
        print response

        try:
            s.shutdown(socket.SHUT_RDWR)
        except socket.error, exc:
            # Depending on the platform, shutting down one half of the
            # connection can also close the opposite half
            if exc.errno != errno.ENOTCONN:
                raise

        s.close()


connectsocket(host, port)

It probably makes sense for you to check out the Twisted library as well. You can also check out this book: Foundations of Python Network Programming.

There's also a good socket tutorial on the python documentation website that can be of assistance. Last, but not least, there's a slightly more comprehensive tutorial that I found on Google which looks great for beginners.

HTH.

---

You need to tell the server to keep the TCP connection open and expect more requests:

headers = 'Connection: keep-alive\r\n'
s.send(input + '\r\n' + headers + '\r\n')

Also, try specifying the HTTP version:

python socketconn.py 
Command: GET / HTTP/1.1