ip::tcp::iostream flush() doesn't clear the buffer. Neither does clear();

[ericrsoldan@…]

Code something like the below shows the issue:

std::string postData = "This is my post data.";

ip::tcp::iostream stream;

stream.expires_from_now(boost::posix_time::seconds(10));

stream.connect("192.168.1.128", "http");

stream << "POST /myRestfulPath HTTP/1.1\r\n";

stream << "Content-Type: application/x-www-form-urlencoded\r\n";

stream << "Host: 192.168.1.128:8080\r\n";

stream << "Content-Length: " << postData.size() << "\r\n";

stream << "Connection: Close\r\n\r\n";

stream.flush();

stream << postData.c_str();

stream.flush();

Using Wireshark, the headers show up with the first flush, but also show up from the second, with the postData appended.

I understand that I do not need the first flush in this example. However, the server requires an "Expect: 100-Continue" so therefore I need to send before the postData, and then receive the "Continue", and then send the postData. (Not shown.)

stream.clear() doesn't clear what flush left behind, either.

[Ion Gaztañaga]

Seems like an Asio problem to be. Re-assigning.