system.net.httpPost error codes

Ignition
1

Would it be idiomatic to read error codes from the system.net.httpPost IOError exception, or is there a way to retrieve the HTTP status code?

As an example:

[code]from system.net import httpPost

acct = u’username’
auth = u’password’
url = ‘https://www.google.com’

try:
resp = httpPost(url, username=acct, password=auth)
print resp
except IOError, e:
print e[/code]
yields

Server returned HTTP response code: 405 for URL: https://www.google.com

I can take the output e and parse it (or sledge it with a regex), but before I start messing with strings, I figured I’d check if I just missed an obvious way to just extract the HTTP status code. Thanks!

2

No obvious way to extract just the HTTP status code. Hammer away.

Best,

3

Well, you know what they say…

Here’s a playground script of what I was thinking:

[code]import re

pattern = ‘HTTP response code: ([0-9]{3}) for URL: (http[s]?://.*)’
source = ‘Server returned HTTP response code: 405 for URL: https://www.google.com’

regex = re.compile(pattern)

match = regex.findall(source)

for m in match:
print m[/code]
yielding

('405', 'https://www.google.com')

It’ll work, but I can’t help but feel it’s a bit heavy-handed for the job. I could just do some string splicing, but I don’t know if I should count on the string being perfectly identically formatted for all errors.

4

Yes. Another approach is to use the builtin Python library module for making http requests: urllib2

Or use Java’s HttpURLConnection class.

Remember you have Python and Java libraries available to you in Python scripts.

Best,

5

Does one approach have any significant advantages?

Getting SSL to work right without calling upon Java is hard (possible in Jython 2.5.3?), so I figured it would be more reliable to use the built-in function. I also guessed there may be some nice side effects, like Ignition handling some connection pooling or the like. And it’s somewhat turn-key (except for error handling, which is going to be non-optimal anyway).

But since I’ll be making quite a few HTTP requests regularly, it wouldn’t be a terrible idea to optimize this early.