How to connect to a server using basic http auth thru sockets in python .I don't want to use urllib/urllib2 etc as my program does some low level socket I/O operations
Add a comment
|
2 Answers
Probably the easiest place to start is using makefile() to get a simpler file-like interface to the socket.
import socket, base64
host= 'www.example.com'
path= '/'
username= 'fred'
password= 'bloggs'
token= base64.encodestring('%s:%s' % (username, password)).strip()
lines= [
'GET %s HTTP/1.1' % path,
'Host: %s' % host,
'Authorization: Basic %s' % token,
'Connection: close',
]
s= socket.socket()
s.connect((host, 80))
f= s.makefile('rwb', bufsize=0)
f.write('\r\n'.join(lines)+'\r\n\r\n')
response= f.read()
f.close()
s.close()
You'll have to do a lot more work than that if you need to interpret the returned response to pick out the HTML or auth-required headers, and handle redirects, errors, transfer-encoding and all that right. HTTP can be complex! Are you sure you need to use a low-level socket?
Comments
Look e.g. at urllib's sources, specifically the http_error_401 function (and the dispatching around it of course): make the HTTP request, watch for a 401 response, extract its realm, check that its scheme is basic, try again with the user and password for that realm (cfr function retry_http_basic_auth in that same source file). Lots of work of course, but that's the price of programming "down to the bare metal" as you require.
answered May 28, 2010 at 14:49
Alex Martelli
887k175 gold badges1.3k silver badges1.4k bronze badges