如何强制http.client在python中发送chunked-encoding HTTP正文？ [英] How to force http.client to send chunked-encoding HTTP body in python?

问题描述

我想发送分块的HTTP主体来测试我自己的HTTP服务器。
所以我写了这个python代码：

I want to send chunked HTTP body to test my own HTTP server. So I wrote this python code:

import http.client

body = 'Hello World!' * 80

conn = http.client.HTTPConnection("some.domain.com")
url = "/some_path?arg=true_arg"

conn.request("POST", url, body, {"Transfer-Encoding":"chunked"})

resp = conn.getresponse()
print(resp.status, resp.reason)

我希望HTTP请求的主体是transferrd chunked，
但是我使用Wireshark捕获网络包，HTTP请求的主体不会被转移分块。

I expect the HTTP request's body is transferrd chunked, but I capture the network package with Wireshark, the HTTP request's body is not transferred chunked.

如何通过python中的http.client lib传输chunked body？

推荐答案

好的，我明白了。

首先，写一下我自己的分块编码功能。

First, write my own chunked encode function.

然后使用putrequest（），putheader（），endheaders（）和send（）而不是request（）

Then use putrequest(), putheader(), endheaders() and send() instead of request()

import http.client

def chunk_data(data, chunk_size):
    dl = len(data)
    ret = ""
    for i in range(dl // chunk_size):
        ret += "%s\r\n" % (hex(chunk_size)[2:])
        ret += "%s\r\n\r\n" % (data[i * chunk_size : (i + 1) * chunk_size])

    if len(data) % chunk_size != 0:
        ret += "%s\r\n" % (hex(len(data) % chunk_size)[2:])
        ret += "%s\r\n" % (data[-(len(data) % chunk_size):])

    ret += "0\r\n\r\n"
    return ret


conn = http.client.HTTPConnection(host)
url = "/some_path"
conn.putrequest('POST', url)
conn.putheader('Transfer-Encoding', 'chunked')
conn.endheaders()
conn.send(chunk_data(body, size_per_chunk).encode('utf-8'))

resp = conn.getresponse()
print(resp.status, resp.reason)
conn.close()

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