c++ boost asio post requests - c++

Question

I need to send several post requests to my virtual machine. I get examples of packets from pcap file and then modify them to insert my data(I do it because format of data is rather strange). At first, I send an empty post request (variable none) to my server and everything is OK, server responds to me. But then I need to send another post request(variable challenge_responce), but when I do it as the first time, server doesn't responses me.
none = "POST /jsproxy HTTP/1.1
Host: 192.168.37.2
Connection: keep-alive
Content-Length: 0
Pragma: no-cache
Cache-Control: no-cache
Origin: file://
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/44.0.2403.89 Chrome/44.0.2403.89 Safari/537.36
Content-Type: text/plain;charset=UTF-8
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: username=admin"
challenge_responce = "POST /jsproxy HTTP/1.1
Host: 192.168.37.2
Connection: keep-alive
Content-Length: 117
Pragma: no-cache
Cache-Control: no-cache
Origin: file://
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/44.0.2403.89 Chrome/44.0.2403.89 Safari/537.36
Content-Type: text/plain;charset=UTF-8
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: username=admin
ДЂДЂДЂДЂДЂДЂДЂ/Rñ±•Â$0[^96“ù¦ĀĀ!##$%^&*()_+:3|~ĀĀĀĀĀĀĀĀ§Ç1&TВЌВЌpMГЇm)[4}(В¤<HГѓ%Гў(Г„Гadmin"
Here is my code:
packet = pcap_next(handle, &header);
Arrcpy(none, ParsePacket(packet, length), 1000);
packet = pcap_next(handle, &header);
Arrcpy(challenge, ParsePacket(packet, length), 1000);
packet = pcap_next(handle, &header);
Arrcpy(challenge_responce, ParsePacket(packet, length), 1000);
boost::asio::ip::tcp::iostream stream("192.168.37.2", "http");
stream << none;
std::string temp;
std::string chPacket;
auto t = stream.rdbuf();
while (std::getline(stream, temp))
chPacket += temp;
auto code = GetChallenge(chPacket);
std::string modChallengeResponce = ModifyChallengeResponce(challenge_responce, length, code, "qazwsx12");
stream << modChallengeResponce;
std::string resq;
while (std::getline(stream, temp))
resq += temp;
std::cout << stream.rdbuf();
How can i fix it?? May be I shoule not use tcp::iostream ??