python连接服务器失败_Python请求：连接到代理服务器时忽略异常和错误

最新推荐文章于 2024-03-22 09:18:37 发布

最新推荐文章于 2024-03-22 09:18:37 发布 · 1.9k 阅读

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#python连接服务器失败

本文介绍了一个使用Python和代理服务器进行在线投票的程序。该程序能够处理代理服务器引起的错误，并跳过导致问题的代理，确保投票过程的连续性和稳定性。

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我用Python编写了第一个程序.

#This program casts votes in online poll using different proxy servers for each request.

#It works, but some proxy servers cause errors crashing the whole thing.

#To avoid that, I would like it to skip those servers and ignore the errors.

import requests

import time

#Votes to be cast

votes = 5

#Makes proxy list

f=open('proxy2.txt')

lines=f.read().splitlines()

f.close()

#Vote counter

i = 1

#Proxy list counter

j = 0

while (i<=votes):

#Tests and moves to next proxy if there was a problem.

try:

r = requests.get('http://www.google.com')

except requests.exceptions.RequestException:

j = j + 1

#Headers copied from my browser. Some of them cause errors. Could you tell me why?

headers = {

'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',

#'Accept-Encoding': 'gzip, deflate',

#'Accept-Language': 'pl-PL,pl;q=0.8,en-US;q=0.6,en;q=0.4',

#'Cache-Control': 'max-age=0',

#'Connection': 'keep-alive',

#'Content-Length': '101',

'Content-Type': 'application/x-www-form-urlencoded',

#'Host': 'www.mylomza.pl',

#'Origin': 'http://www.mylomza.pl',

#'Referer': 'http://www.mylomza.pl/home/lomza/item/11780-wybierz-miss-%C5%82ks-i-portalu-mylomzapl-video-i-foto.html',

#'Upgrade-Insecure-Requests': '1',

#'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'

}

proxies = {

'http': 'http://'+lines[j] #31.207.0.99:3128

}

r = requests.get('http://www.mylomza.pl/home/lomza/item/11780-wybierz-miss-%C5%82ks-i-portalu-mylomzapl-video-i-foto.html', headers=headers, proxies=proxies, timeout=10)

#The funny part - form, that I have to post, requires some kind of ID and this is my way of getting it :P Feel free to suggest an alternative way.

userid = r.text[(22222-32):22222]

print('Voter', userid, 'registered.')

data = {

'voteid': '141',

'task_button': 'Głosuj',

'option': 'com_poll',

'task': 'vote',

'id': '25',

userid: '1'

}

r = requests.post('http://www.mylomza.pl/home/lomza/item/index.php', headers=headers, cookies=r.cookies, data=data, proxies=proxies, timeout=10)

print('Vote nr', i, 'cast from', lines[i])

i = i + 1

j = j + 1

time.sleep(1)

我需要使它处理异常和错误.

#Tests and moves to next proxy if there was a problem.

try:

r = requests.get('http://www.google.com')

except requests.exceptions.RequestException:

j = j + 1

除此之外,我可以使用另一种方式来实现这一目标：

#The funny part - form, that I have to post, requires some kind of ID and this is my way of getting it :P Feel free to suggest an alternative way.

userid = r.text[(22222-32):22222]

有时我的方法不起作用(下面的示例).第一次投票通过了,第二次投票没有通过,然后全都崩溃了.

Voter 53bf55490ebd07d9c190787c5c6ca44c registered.

Vote nr 1 cast from 111.23.6.161:80

Voter registered.

Vote nr 2 cast from 94.141.102.203:8080

Traceback (most recent call last):

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connection.py", line 142, in _new_conn

(self.host, self.port), self.timeout, **extra_kw)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\util\connection.py", line 91, in create_connection

raise err

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\util\connection.py", line 81, in create_connection

sock.connect(sa)

socket.timeout: timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 578, in urlopen

chunked=chunked)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 362, in _make_request

conn.request(method, url, **httplib_request_kw)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\http\client.py", line 1083, in request

self._send_request(method, url, body, headers)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\http\client.py", line 1128, in _send_request

self.endheaders(body)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\http\client.py", line 1079, in endheaders

self._send_output(message_body)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\http\client.py", line 911, in _send_output

self.send(msg)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\http\client.py", line 854, in send

self.connect()

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connection.py", line 167, in connect

conn = self._new_conn()

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connection.py", line 147, in _new_conn

(self.host, self.timeout))

requests.packages.urllib3.exceptions.ConnectTimeoutError: (, 'Connection to 94.141.102.203 timed out. (connect timeout=10)')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\adapters.py", line 403, in send

timeout=timeout

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 623, in urlopen

_stacktrace=sys.exc_info()[2])

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\packages\urllib3\util\retry.py", line 281, in increment

raise MaxRetryError(_pool, url, error or ResponseError(cause))

requests.packages.urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='94.141.102.203', port=8080): Max retries exceeded with url: http://www.mylomza.pl/home/lomza/item/11780-wybierz-miss-%C5%82ks-i-portalu-mylomzapl-video-i-foto.html (Caused by ConnectTimeoutError(, 'Connection to 94.141.102.203 timed out. (connect timeout=10)'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\PollVoter.py", line 50, in

r = requests.get('http://www.mylomza.pl/home/lomza/item/11780-wybierz-miss-%C5%82ks-i-portalu-mylomzapl-video-i-foto.html', headers=headers, proxies=proxies, timeout=10)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\api.py", line 71, in get

return request('get', url, params=params, **kwargs)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\api.py", line 57, in request

return session.request(method=method, url=url, **kwargs)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\sessions.py", line 475, in request

resp = self.send(prep, **send_kwargs)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\sessions.py", line 585, in send

r = adapter.send(request, **kwargs)

File "C:\Users\Adrian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\requests\adapters.py", line 459, in send

raise ConnectTimeout(e, request=request)

requests.exceptions.ConnectTimeout: HTTPConnectionPool(host='94.141.102.203', port=8080): Max retries exceeded with url: http://www.mylomza.pl/home/lomza/item/11780-wybierz-miss-%C5%82ks-i-portalu-mylomzapl-video-i-foto.html (Caused by ConnectTimeoutError(, 'Connection to 94.141.102.203 timed out. (connect timeout=10)'))