static void pni_connection_readable(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 capacity = pn_transport_capacity(transport);
if (capacity > 0) {
ssize_t n = pn_recv(pni_reactor_io(reactor), pn_selectable_get_fd(sel),
pn_transport_tail(transport), capacity);
if (n <= 0) {
if (n == 0 || !pn_wouldblock(pni_reactor_io(reactor))) {
if (n < 0) {
pn_condition_t *cond = pn_transport_condition(transport);
pn_condition_set_name(cond, "proton:io");
pn_condition_set_description(cond, pn_error_text(pn_reactor_error(reactor)));
}
pn_transport_close_tail(transport);
}
} else {
pn_transport_process(transport, (size_t)n);
}
}
ssize_t newcap = pn_transport_capacity(transport);
//occasionally transport events aren't generated when expected, so
//the following hack ensures we always update the selector
if (1 || newcap != capacity) {
pni_connection_update(sel);
pn_reactor_update(reactor, sel);
}
}
void connection_engine::try_read() {
size_t max = can_read();
if (max == 0) return;
try {
size_t n = io_read(pn_transport_tail(ctx_->transport), max);
if (n > max)
throw io_error(msg() << "read invalid size: " << n << " > " << max);
pn_transport_process(ctx_->transport, n);
} catch (const closed_error&) {
pn_transport_close_tail(ctx_->transport);
} catch (const io_error& e) {
set_error(ctx_, e.what());
pn_transport_close_tail(ctx_->transport);
}
}
void connection_engine::read_done(size_t n) {
if (n > 0)
pn_transport_process(unwrap(transport_), n);
}
