python http客户端卡在100上继续

我有一个简单的python http服务器，它使用100 continue实现PUT：

class TestHandler(SimpleHTTPRequestHandler):
    def do_PUT(self):
        length = int(self.headers.get('Content-Length'))
        self.send_response_only(100)
        self.end_headers()
        data = self.rfile.read(length)
        res = manipulate(data)
        new_length = len(res)
        self.send_response(200)
        self.send_header("Content-Length", new_length)
        self.end_headers()
        self.wfile.write(res)

server = HTTPServer(("localhost", 8080), TestHandler)
server.serve_forever()

我尝试使用此客户端连接到服务器：

def send_put(data):
    c = HTTPConnection('localhost', 8080)
    c.request('PUT', 'http://localhost:8080/', headers={'Content-Length': len(data), 'Expect': '100-continue'})
    r = c.getresponse()
    if 100 != r.status:
        return
    c.request('PUT', 'http://localhost:8080/', body=data)
    r = c.getresponse()
    print(r.read())

但是代码总是卡在第一个“getresponse”上，即使我可以在wireshark上看到100 continue响应，我在这里做错了什么？python http是否支持100继续

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编辑：在查看了一些python http代码之后，我发现了getresponse被卡住的原因；python的http只是忽略100 continue并等待下一个永远不会出现的响应（来自python3.4/http/client.py）：

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我也遇到了这个问题；这是一个好主意。我提出了以下相当粗俗的“让它运行”变通方法，在我的情况下（仅限Python 3.5，HTTPS）似乎是可行的：

我是这样使用它的：

conn = ContinueHTTPSConnection(host)
conn.request(...)
resp = conn.getresponse()

if resp.status == http.client.CONTINUE:
    resp.read()
    conn.send(body)
    resp = conn.getresponse()

# do something with resp if you want...

---

警告：超级黑客。可能到处都是虫子。使用风险自负。

您是否尝试发送

wget localhost:8080

。还可以尝试使用

sudo

运行python代码。。我运行了您的代码并获得了

AttributeError:TestHandler实例没有属性'send\u response\u only'

。另外，AFAIK python请求不支持100 continuedid您是否使用python3运行它？python 3.2中添加了send_response_only以支持100 continue。

class ContinueHTTPResponse(http.client.HTTPResponse):
    def _read_status(self, *args, **kwargs):
        version, status, reason = super()._read_status(*args, **kwargs)
        if status == 100:
            status = 199
        return version, status, reason

    def begin(self, *args, **kwargs):
        super().begin(*args, **kwargs)
        if self.status == 199:
            self.status = 100

    def _check_close(self, *args, **kwargs):
        return super()._check_close(*args, **kwargs) and self.status != 100


class ContinueHTTPSConnection(http.client.HTTPSConnection):
    response_class = ContinueHTTPResponse

    def getresponse(self, *args, **kwargs):
        logging.debug('running getresponse')
        response = super().getresponse(*args, **kwargs)
        if response.status == 100:
            setattr(self, '_HTTPConnection__state', http.client._CS_REQ_SENT)
            setattr(self, '_HTTPConnection__response', None)
        return response

conn = ContinueHTTPSConnection(host)
conn.request(...)
resp = conn.getresponse()

if resp.status == http.client.CONTINUE:
    resp.read()
    conn.send(body)
    resp = conn.getresponse()

# do something with resp if you want...