#!/usr/bin/env python
# Error Handling Example With Shutdown – Chapter 2 – shutdown.py
import socket, sys, time
host = sys.argv[1]
textport =sys.argv[2]
filename = sys.argv[3]
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 parsing it as a numeric port number.
try:
port = int(textport)
except ValueError:
#That didn’t work. Look it up instead.
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 connectiing to server: %s” % e
sys.exit(1)
except socket.error, e:
print “Connection error: %s” % e
print “Sleeping…”
time.sleep(10)
print “Continuning.”
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)