- // Since it is possible that a partial write took place, adjust sendq_len
- sendq_len = sendq_len - itemlen + front.length();
- return;
- }
- else
- {
- SetError("Write Error"); // will not overwrite a better error message
- return;
- }
- }
-#ifdef DISABLE_WRITEV
- else
- {
- rv = SocketEngine::Send(this, front.data(), itemlen, 0);
- if (rv == 0)
- {
- SetError("Connection closed");
- return;
- }
- else if (rv < 0)
- {
- if (errno == EINTR || SocketEngine::IgnoreError())
- SocketEngine::ChangeEventMask(this, FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK);
- else
- SetError(SocketEngine::LastError());
- return;
- }
- else if (rv < itemlen)
- {
- SocketEngine::ChangeEventMask(this, FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK);
- front.erase(0, rv);
- sendq_len -= rv;
- return;
- }
- else
- {
- sendq_len -= itemlen;
- sendq.pop_front();
- if (sendq.empty())
- SocketEngine::ChangeEventMask(this, FD_WANT_EDGE_WRITE);
- }
- }
-#endif
- }
- }
- catch (CoreException& modexcept)
- {
- ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "%s threw an exception: %s",
- modexcept.GetSource().c_str(), modexcept.GetReason().c_str());
- }
+ // rv == 0 means the socket has blocked. Stop trying to send data.
+ // IOHook has requested unblock notification from the socketengine.