Question

我正在本地运行Django的Python3并收听http://127.0.0.1:8000/

，我想通过request和socket

等不同方式对其进行测试

import requests
res = requests.request("GET", "http://127.0.0.1:8000/")
txt = res.content
print(res)
res.close()

# <Response [200]>

运行良好，并且

在我运行的Django控制台上，它显示[07/Jul/2018 16:04:26] "GET / HTTP/1.1" 200 6744

现在从requests到socket

import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('127.0.0.1', 8000))
msg = b'GET / HTTP/1.1'
s.send(msg)
print(s)
s.close()

# <socket.socket fd=1324, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 55312), raddr=('127.0.0.1', 8000)>

我的程序中没有错误显示

但是在运行的Django控制台上出现以下异常

Invalid HTTP_HOST header: 'tony.jhou-1.xxservice.com:8000'. You may need to add 'tony.jhou-1.xxservice.com:8000' to ALLOWED_HOSTS.
[07/Jul/2018 16:08:10] "GET / HTTP/1.1" 400 63266
Traceback (most recent call last):
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 332, in send_headers
    self.send_preamble()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 255, in send_preamble
    ('Date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
  File "D:\emc\ve\lib\site-packages\gevent\_socket3.py", line 459, in sendall
    return _socketcommon._sendall(self, data_memory, flags)
  File "D:\emc\ve\lib\site-packages\gevent\_socketcommon.py", line 358, in _sendall
    timeleft = __send_chunk(socket, chunk, flags, timeleft, end)
  File "D:\emc\ve\lib\site-packages\gevent\_socketcommon.py", line 287, in __send_chunk
    data_sent += socket.send(chunk, flags)
  File "D:\emc\ve\lib\site-packages\gevent\_socket3.py", line 440, in send
    return _socket.socket.send(self._sock, data, flags)
ConnectionAbortedError: [WinError 10053] 連線已被您主機上的軟體中止。
[07/Jul/2018 16:08:10] "GET / HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 54587)
Traceback (most recent call last):
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 332, in send_headers
    self.send_preamble()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 255, in send_preamble
    ('Date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
  File "D:\emc\ve\lib\site-packages\gevent\_socket3.py", line 459, in sendall
    return _socketcommon._sendall(self, data_memory, flags)
  File "D:\emc\ve\lib\site-packages\gevent\_socketcommon.py", line 358, in _sendall
    timeleft = __send_chunk(socket, chunk, flags, timeleft, end)
  File "D:\emc\ve\lib\site-packages\gevent\_socketcommon.py", line 287, in __send_chunk
    data_sent += socket.send(chunk, flags)
  File "D:\emc\ve\lib\site-packages\gevent\_socket3.py", line 440, in send
    return _socket.socket.send(self._sock, data, flags)
ConnectionAbortedError: [WinError 10053] 連線已被您主機上的軟體中止。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "D:\emc\ve\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "D:\emc\ve\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\tony.jhou\AppData\Local\Continuum\Anaconda3\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'

我是套接字编程的新手，只是开始学习网络，我想也许我应该发送更多的请求头。谢谢，请告诉我该怎么做。

Answer 1

是的，您需要发送更多数据。最小的HTTP 1.1请求需要第二行包含Host标头，该标头指定应处理请求的主机的名称或地址，并且请求标头行后必须带有空行以告知服务器标头已被完全接收。

在HTTP中，一行的结尾由一对字符，回车符和一个换行符表示。在Python字符串中，\r代表回车符，\n代表换行符。（换行符有时称为 newline 字符，因此称为\n代码。）这意味着您必须编写\r\n来标记换行符的每一行的结尾。请求。

因此，您需要的是：

msg = b'GET / HTTP/1.1\r\nHost: 127.0.0.1\r\n\r\n'

最后的\r\n产生空行，指示标题的末尾。

进行更改后，服务器可能会报告其他错误，因为客户端程序会立即关闭其套接字。这断开了客户端和服务器之间的连接。当服务器尝试发送其响应时，它将发现连接已断开，并且可能会对此抱怨。为避免这种情况，请更改客户端以使用s.recv等待并在服务器执行s.send()后从服务器读取响应。像这样：

while True:
  resp = s.recv(8000)
  if resp:
    print resp
  else:
    break

使用python3套接字连接到Web服务器

1 个答案: