http 압축 메시지가 포함 된 tcp 패킷을 읽으려고하지만 'zlib 압축 해제 중 예외 : (-3) 잘못된 헤더 검사'와 함께 실패합니다. 내 코드가 잘못 되었나요? 아니면 저를 위해 라이브러리가 있습니까?http를 압축 해제하는 방법은 무엇입니까?
std::string decompress_string(const std::string& str) {
z_stream zs; // z_stream is zlib's control structure
memset(&zs, 0, sizeof(zs));
if (inflateInit(&zs) != Z_OK)
throw(std::runtime_error("inflateInit failed while decompressing."));
zs.next_in = (Bytef*)str.data();
zs.avail_in = str.size();
int ret;
char outbuffer[32768];
std::string outstring;
// get the decompressed bytes blockwise using repeated calls to inflate
do {
zs.next_out = reinterpret_cast<Bytef*>(outbuffer);
zs.avail_out = sizeof(outbuffer);
ret = inflate(&zs, 0);
if (outstring.size() < zs.total_out) {
outstring.append(outbuffer,
zs.total_out - outstring.size());
}
} while (ret == Z_OK);
inflateEnd(&zs);
if (ret != Z_STREAM_END) { // an error occurred that was not EOF
qDebug() << "Exception during zlib decompression: (" << ret << ") " << zs.msg;
return "";
}
return outstring;
}
std::string parseHttp(std::string payload) {
size_t index = payload.find("\r\n\r\n");
if (index == std::string::npos) {
qDebug() << "http body not found, dropped.";
return "";
}
std::string body = payload.substr(index + 4);
if (payload.find("Content-Encoding: gzip") == std::string::npos){
return body;
} else {
return decompress_string(body);
}
}
[ZLib Inflate()가 -3 Z_DATA_ERROR로 실패 함] (http://stackoverflow.com/questions/18700656/zlib-inflate-failing-with-3-z-data-error) – kicken
아마도 모든 것을 이해할 수 있을지 모르겠지만 inflateInit2 (& zs, -MAX_WBITS)로 inflate (& zs, 0)를 바꾸면 여전히 작동하지 않습니다. – KevinFox