ZLMediaKit/src/Http/HttpRequestSplitter.cpp

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//
// Created by xzl on 2018/9/20.
//
#include "HttpRequestSplitter.h"
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#include "Util/logger.h"
#include "Util/util.h"
using namespace ZL::Util;
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void HttpRequestSplitter::input(const char *data,uint64_t len) {
const char *ptr = data;
if(!_remain_data.empty()){
_remain_data.append(data,len);
data = ptr = _remain_data.data();
len = _remain_data.size();
}
splitPacket:
//数据按照请求头处理
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char *index = nullptr;
while (_content_len == 0 && (index = strstr(ptr,"\r\n\r\n")) != nullptr) {
//_content_len == 0这是请求头
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_content_len = onRecvHeader(ptr, index - ptr + 4);
ptr = index + 4;
}
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uint64_t remain = len - (ptr - data);
if(remain <= 0){
//没有剩余数据,清空缓存
_remain_data.clear();
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return;
}
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if(_content_len == 0){
//尚未找到http头缓存定位到剩余数据部分
_remain_data.assign(ptr,remain);
return;
}
//已经找到http头了
if(_content_len > 0){
//数据按照固定长度content处理
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if(remain < _content_len){
//数据不够,缓存定位到剩余数据部分
_remain_data.assign(ptr,remain);
return;
}
//收到content数据并且接受content完毕
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onRecvContent(ptr,_content_len);
remain -= _content_len;
ptr += _content_len;
//content处理完毕,后面数据当做请求头处理
_content_len = 0;
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if(remain > 0){
//还有数据没有处理完毕
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_remain_data.assign(ptr,remain);
data = ptr = (char *)_remain_data.data();
len = _remain_data.size();
goto splitPacket;
}
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return;
}
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//_content_len < 0;数据按照不固定长度content处理
onRecvContent(ptr,remain);//消费掉所有剩余数据
_remain_data.clear();
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}
void HttpRequestSplitter::setContentLen(int64_t content_len) {
_content_len = content_len;
}