boost read_until stops at white space - c++

Question

I am trying to setup a tcp socketing server with boost. For some reason the function read_until seems to be stopping at white space rather then going all the way until the delimiter.
for example:
sent
┼N▀]»ü rx}q╠Cä≥è┘Y\║ï2æ╨╬ΣfV╠παÇ/S┬0è3à ╫VR∞{εoÆ?LeN≡╬.lÖnÖ1⌡&âm&ù╫ä╛'°≈L▀_ °çF¿P»2ß|╪+96#3kα≥
╟¬─╣╩í▄¢hú╤fûº╢5~AcbF┌Zd╒∞?╓)a.ƒ¿B■αZº=■uΣ╔nÜ┌╬▌╝>┌iE┌y≈ÿ≤┴Kå ²å£∩¢R>╒S(y╙cPjA▀▀Z2O╓? ÆÉ#τß╢ªy╗▒*Γ▓σ&K₧#╦╩∙⌠%ßΩ-x*Ü╞7ε_█zâ╡C
╧╩║╗Q■═TM╠<æ┤päi^▓'àiUóα<«3Çÿ ─╗E Σ]ππa╒εk»╣╕(╔╡╙ä╝y≡╥¡╠▌╪┼¡Ö
a|MC├₧\y╚üßσ√⌡ÿ±2<æq}ÿ┌Mzçα∩òΣÆ{end}
recived:
┼N▀]»ü
My code that reads from the socket is
string read_(tcp::socket& socket, CryptoPP::RSA::PrivateKey *privateKey) {
boost::asio::streambuf buf;
boost::asio::read_until(socket, buf, "{end}");
string data = boost::asio::buffer_cast<const char*>(buf.data());
std::cout << "recived:\n" << data << std::endl;
return data
}
solution:
string read_(tcp::socket& socket, CryptoPP::RSA::PrivateKey *privateKey) {
boost::asio::streambuf buf;
boost::asio::read_until(socket, buf, "{end}");
streambuf::const_buffers_type buf2 = buf.data();
string data(buffers_begin(buf2), buffers_begin(buf2) + buf.size());
std::cout << "recived:\n" << data << std::endl;
return data
}

Answer 1

You should output the characters in a safe way, e.g. by printing each byte as 2 hex digits:
auto read_(tcp::socket& socket, CryptoPP::RSA::PrivateKey * /*privateKey*/) {
std::vector<uint8_t> data;
boost::asio::read_until(
socket,
boost::asio::dynamic_buffer(data),
"{end}");
std::cout << "received:\n";
for (int ch : data) {
std::cout << " " << std::hex << std::setw(2) << std::setfill('0') << ch;
}
return data;
}
Note that I elected to:
omit the intermediate streambuf
used the opportunity to demonstrate that you can easily use more apt data structures (std::vector<uint8_t>), although you can, of course, replace that with std::string