python - 使用python请求添加代理 header

Question

规格：Python 2.7.9，请求2.12.4，Windows OS

s = requests.Session()
proxy = {'http':'http://ip:port',
         'https':'http://ip:port'}
r_url = "https://api.ipify.org"
s.get(r_url,verify=False,timeout=5,proxies=proxy,headers=headers)

问题：
我需要向HTTP CONNECT方法添加“ HOST”标头。似乎请求或urllib3都没有发送此标头或代理服务器没有例外的格式；“主机”：“ api.ipify.org”。添加主机头是解决方案，但是我不确定最好的解决方法是什么。

Answer 1

您无法通过请求AFAIK来执行此操作，而必须进一步降低urrllib2的级别：

class ProxyHTTPConnection(httplib.HTTPConnection):

    _ports = {'http' : 80, 'https' : 443}


    def request(self, method, url, body=None, headers={}):
        #request is called before connect, so can interpret url and get
        #real host/port to be used to make CONNECT request to proxy
        proto, rest = urllib.splittype(url)
        if proto is None:
            raise ValueError, "unknown URL type: %s" % url
        #get host
        host, rest = urllib.splithost(rest)
        #try to get port
        host, port = urllib.splitport(host)
        #if port is not defined try to get from proto
        if port is None:
            try:
                port = self._ports[proto]
            except KeyError:
                raise ValueError, "unknown protocol for: %s" % url
        self._real_host = host
        self._real_port = port
        httplib.HTTPConnection.request(self, method, url, body, headers)


    def connect(self):
        httplib.HTTPConnection.connect(self)
        #send proxy CONNECT request
        self.send("CONNECT %s:%d HTTP/1.0\r\n\r\n" % (self._real_host, self._real_port))
        #expect a HTTP/1.0 200 Connection established
        response = self.response_class(self.sock, strict=self.strict, method=self._method)
        (version, code, message) = response._read_status()
        #probably here we can handle auth requests...
        if code != 200:
            #proxy returned and error, abort connection, and raise exception
            self.close()
            raise socket.error, "Proxy connection failed: %d %s" % (code, message.strip())
        #eat up header block from proxy....
        while True:
            #should not use directly fp probably
            line = response.fp.readline()
            if line == '\r\n': break