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);
}
static ssize_t pni_connection_pending(pn_selectable_t *sel)
{
pn_transport_t *transport = pni_transport(sel);
ssize_t pending = pn_transport_pending(transport);
if (pending < 0) {
if (pn_transport_closed(transport)) {
pn_selectable_terminate(sel);
}
}
return pending;
}
size_t connection_engine::can_write() const {
return std::max(ssize_t(0), pn_transport_pending(ctx_->transport));
}