httpparser介紹

：1.解析位元組型別的http與https請求資料

：2.支援已k-v形式修改請求資料

：3.支援重新編碼請求資料

原始碼

import json
__author = "-ling"

def parser(request_data):
    # 獲取請求的三個段：
    # 1.請求方法 URI協議 版本
    # 2.請求頭(Request Header)
    # 3.請求正文
    index0 = request_data.find(b"\r\n\r\n")
    request_predata = request_data[0:index0]
    index1 
 
= request_predata.find(b"\r\n")

    # 請求方法 URI協議 版本
    request_first_data = request_predata[0:index1].decode("utf-8")
    request_first = {}
    count = 0
    list = ["method", 'url', 'version']
    for line in request_first_data.split(" "):
        if line != "":
            request_first[list[count]] 
 
= line
            count += 1
    # print("解析請求方法 URI協議 版本：",request_first)

    # 請求頭(Request Header)
    request_header_data = request_predata[index1:].decode("utf-8")
    request_headers = {}
    for line in request_header_data.split("\r\n"):
        if line != "":
            line = line.replace("
 
 ","")
            restemp = line.split(":")
            if restemp[0] == "Host" and len(restemp) == 3:
                restemp[1] = restemp[1] + ":" +restemp[2]
            request_headers[restemp[0]] = restemp[1]
    # print("請求頭(Request Header):",request_headers)

    # 請求正文
    request_nextdata = request_data[index0:].decode("utf-8")
    request_content_temp = request_nextdata.replace("\r\n", "")
    request_content = None
    if request_content_temp != "":
        request_content = json.loads(request_content_temp)
        # print("請求正文:",request_content)
    else:
        pass
        # print("無請求正文！")
    return request_first,request_headers,request_content,request_nextdata

def update_first_data(request_first_data,field,data):
    request_first_data[field] = data


def update_request_headers(request_headers,field,data):
    request_headers[field] = data


def update_request_content(request_content,field,data):
    request_content[field] = data


def encode(request_first_data,request_headers,request_content):
    request_data = b""
    list = ["method", 'url', 'version']
    for key in list:
        request_data += (request_first_data[key] + " ").encode("utf-8")
    request_data += "\r\n".encode("utf-8")
    for key in request_headers.keys():
        request_data += (key + ":" + request_headers[key]).encode("utf-8")
        request_data += "\r\n".encode("utf-8")
    request_data += "\r\n".encode("utf-8")
    if request_content != None:
            request_data += json.dumps(request_content).encode("utf-8")
    # print("重新編碼以後的資料：",request_data.decode("utf-8"))
    return request_data

如何使用

1.解析請求資料

request_first,request_headers,request_content,request_nextdata = httpparser.parser(request_data)

2.修改或者增加各個部分的欄位使用

update_first_data ：修改第一行欄位資料

update_request_headers ：修改請求頭或者增加請求頭欄位

update_request_content ：修改請求內容欄位或者增加請求內容

3.再編碼三個部分的資料

encode(request_first_data,request_headers,request_content)