static void pni_connection_writable(pn_selectable_t *sel) { pn_reactor_t *reactor = (pn_reactor_t *) pni_selectable_get_context(sel); pn_transport_t *transport = pni_transport(sel); ssize_t pending = pn_transport_pending(transport); if (pending > 0) { ssize_t n = pn_send(pni_reactor_io(reactor), pn_selectable_get_fd(sel), pn_transport_head(transport), pending); if (n < 0) { if (!pn_wouldblock(pni_reactor_io(reactor))) { pn_condition_t *cond = pn_transport_condition(transport); if (!pn_condition_is_set(cond)) { pn_condition_set_name(cond, "proton:io"); pn_condition_set_description(cond, pn_error_text(pn_reactor_error(reactor))); } pn_transport_close_head(transport); } } else { pn_transport_pop(transport, n); } } ssize_t newpending = pn_transport_pending(transport); if (newpending != pending) { pni_connection_update(sel); pn_reactor_update(reactor, sel); } }
const_buffer connection_engine::write_buffer() const { ssize_t pending = pn_transport_pending(unwrap(transport_)); if (pending > 0) return const_buffer(pn_transport_head(unwrap(transport_)), pending); else return const_buffer(0, 0); }
void connection_engine::try_write() { size_t max = can_write(); if (max == 0) return; try { size_t n = io_write(pn_transport_head(ctx_->transport), max); if (n > max) { throw io_error(msg() << "write invalid size: " << n << " > " << max); } pn_transport_pop(ctx_->transport, n); } catch (const closed_error&) { pn_transport_close_head(ctx_->transport); } catch (const io_error& e) { set_error(ctx_, e.what()); pn_transport_close_head(ctx_->transport); } }