void validate(connection_ptr con)
{
// The key validation step we need to do is on the subprotocols the
// client requested. This should include "sip", in which case we'll
// select "sip" too. If "sip" was not offered, we offer nothing and the
// connection will probably fail.
LOG_DEBUG("Validating incoming web socket connection");
const std::vector<std::string>& subprotocols = con->get_subprotocols();
if (std::find(subprotocols.begin(), subprotocols.end(), SUBPROTOCOL) != subprotocols.end())
{
LOG_DEBUG("Client requested subprotocol sip - agreeing");
con->select_subprotocol("sip");
}
else
{
// Build a comma-separated list of subprotocols ready to log.
std::stringstream ss;
std::copy(subprotocols.begin(), subprotocols.end(), std::ostream_iterator<std::string>(ss, ","));
std::string str = ss.str();
if (!str.empty())
{
// The above added a trailing comma. Strip it.
str = str.substr(0, str.length() - 1);
}
LOG_INFO("Client requested subprotocols %s - connection will probably fail", str.c_str());
}
}
