如何进行chunked解码？

[O湛狼O]

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: application/json;charset=utf-8
Transfer-Encoding: chunked
Content-Encoding: gzip
Vary: Accept-Encoding
Date: Mon, 28 May 2012 09:56:44 GMT
Connection: close

a

如何对这种数据解析解码？有高手知道吗。

[O湛狼O]

已经解决了。不用这么麻烦，还是谢谢你了。[Quote=引用 1 楼 的回复:]

我写的代理工具里刚好做了这个处理，代码见此处：https://github.com/AlloyTeam/Rythem/blob/master/proxy/rypipedata.cpp

工具介绍：http://www.alloyteam.com/2012/05/web-front-end-tool-rythem-1/

chunked格式为：

size\r\n
content
……
[/Quote]

[un_nu]

我写的代理工具里刚好做了这个处理，代码见此处：https://github.com/AlloyTeam/Rythem/blob/master/proxy/rypipedata.cpp

工具介绍：http://www.alloyteam.com/2012/05/web-front-end-tool-rythem-1/

chunked格式为：

size\r\n
content
size\r\n
content\r\n
...
0\r\n

size为16进制字符

相关代码：

int RyPipeData::readChunk(int chunkSize,QByteArray* chunkData,QByteArray* unChunkDes){
    int sourceSize = (*chunkData).size();
    if(sourceSize < chunkSize){
        (*unChunkDes).append(*chunkData);
        (*chunkData).clear();
        return sourceSize;
    }else{
        QByteArray ba = (*chunkData).left(chunkSize);
        (*unChunkDes).append(chunkData->left(chunkSize));
        (*chunkData).remove(0,chunkSize);
        return chunkSize;
    }
}
int RyPipeData::getChunkSize(QByteArray* chunkedData){
    QByteArray theBody = *chunkedData;
    //qDebug()<<"_lastChunkSizeByteArray:"<<_lastChunkSizeByteArray;

    int chunkEndNewLineSize = 2; // if using \r\n
    int beginOfLength = 0;
    int endOfLength = 0;

    if(theBody.startsWith("\r\n")){
        beginOfLength = 2;
    }else if(theBody.startsWith("\n")){
        beginOfLength = 1;
    }

    if(!_lastChunkSizeByteArray.isEmpty()){
        if(beginOfLength==0){
            //the cach chunksize bytes was whole bytes
            // do nothing here
        }else{
            endOfLength = theBody.indexOf("\r\n");
            if(endOfLength==-1){
                // not ending with \r\n
                // try \n
                endOfLength = theBody.indexOf("\n");
                chunkEndNewLineSize = 1; // using \n
            }
            if(endOfLength == -1){
                // newLine not found
                // append bytes to _lastChunkSizeByteArray
                // and return -1 to identify not found
                /*
qDebug()<<"A invalid getChunkSize\n"
<<chunkedData->size()
<<"\n<===>\n"
<<theBody.replace("\r","\\r").replace("\n","\\n")
<<"\n<===>\n"
<<beginOfLength;
qDebug()<<"\n_lastChunkSizeByteArray="<<_lastChunkSizeByteArray;
*/
                /*
meet this condition:
the data doesn't contains whole chunksize bytes
*/
                _lastChunkSizeByteArray.append(theBody);
                (*chunkedData).clear();
                return -1;
            }else{
                // found new line
                // update _lastChunkSizeByteArray and calculate and clear it
                _lastChunkSizeByteArray.append(theBody.left(endOfLength));
            }
        }
    }else{
        // has no chunksizeByte cache
        //theBody.mid(beginOfLength,endOfLength-beginOfLength).trimmed()
        endOfLength = theBody.indexOf("\r\n",beginOfLength);
        if(endOfLength==-1){
            endOfLength = theBody.indexOf("\n",beginOfLength);
            chunkEndNewLineSize = 1; // using \n
        }
        if(endOfLength == -1){
            // newLine not found
            // cache bytes to _lastChunkSizeByteArray
            // and return -1 to identify not found
            _lastChunkSizeByteArray.append(chunkedData->mid(beginOfLength));
            /*
qDebug()<<"B invalid getChunkSize\n"
<<chunkedData->size()
<<"\n<===>\n"
<<theBody.replace("\r","\\r").replace("\n","\\n")
<<"\n<===>\n"
<<beginOfLength;
qDebug()<<"\n_lastChunkSizeByteArray="<<_lastChunkSizeByteArray;
*/
            (*chunkedData).clear();
            return -1;
        }else{
            _lastChunkSizeByteArray = (*chunkedData).mid(beginOfLength,endOfLength-beginOfLength).trimmed();
        }
    }
    bool isChunkValid;
    //qDebug()<<"chunkSize ba="<<theBody.mid(beginOfLength,endOfLength-beginOfLength).trimmed();

    _lastChunkSizeByteArray = _lastChunkSizeByteArray.trimmed();
    int chunkSize = _lastChunkSizeByteArray.toULongLong(&isChunkValid,16);
    _lastChunkSizeByteArray.clear();

    if(!isChunkValid){
        qDebug()<<"CHUNKED PARSE ERROR:invalid getChunkSize\n"
                <<theBody.replace("\r","\\r").replace("\n","\\n")
                <<"\n"<<_lastChunkSizeByteArray;
        return -1;
    }

    (*chunkedData).remove(0,endOfLength+chunkEndNewLineSize);

    return chunkSize;
}

[xuwei86924]

引用 2 楼 lijiantao923 的回复:

已经解决了。不用这么麻烦，还是谢谢你了。[Quote=引用 1 楼 的回复:] 我写的代理工具里刚好做了这个处理，代码见此处：https://github.com/AlloyTeam/Rythem/blob/master/proxy/rypipedata.cpp 工具介绍：http://www.alloyteam.com/2012/05/web-front-end-tool-rythem-1/ chunked格式为： size\r\n content …… [/Quote]

咋解决的啊