Error Handling Example With Shutdown : Error Handling « Network « Python Tutorial

1. Python Tutorial
2. Network
3. Error Handling

import socket, sys, time

host = "127.0.0.1"
textport = 80
filename = 'test.txt'

try:
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
except socket.error, e:
    print "Strange error creating socket: %s" % e
    sys.exit(1)

try:
    port = int(textport)
except ValueError:
    try:
        port = socket.getservbyname(textport, 'tcp')
    except socket.error, e:
        print "Couldn't find your port: %s" % e
        sys.exit(1)

try:
    s.connect((host, port))
except socket.gaierror, e:
    print "Address-related error connecting to server: %s" % e
    sys.exit(1)
except socket.error, e:
    print "Connection error: %s" % e
    sys.exit(1)

time.sleep(10)

try:
    s.sendall("GET %s HTTP/1.0\r\n\r\n" % filename)
except socket.error, e:
    print "Error sending data: %s" % e
    sys.exit(1)

try:
    s.shutdown(1)
except socket.error, e:
    print "Error sending data (detected by shutdown): %s" % e
    sys.exit(1)

while 1:
    try:
        buf = s.recv(2048)
    except socket.error, e:
        print "Error receiving data: %s" % e
        sys.exit(1)
    if not len(buf):
        break
    sys.stdout.write(buf)