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namespace saw {
}
namespace saw {
template <typename Incoming, typename Outgoing, typename TransportEncoding, typename ContentEncoding, typename Net,
typename BufferT>
streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding, Net,
BufferT>::
streaming_io_peer(
own<conveyor_feeder<data<Incoming, ContentEncoding>>> feed,
own<async_io_stream<Net>> str)
: streaming_io_peer{std::move(feed), std::move(str), {}} {}
template <typename Incoming, typename Outgoing, typename TransportEncoding, typename ContentEncoding, typename Net, typename BufferT>
streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding, Net,
BufferT>::
streaming_io_peer(
own<conveyor_feeder<data<Incoming, ContentEncoding>>> feed,
own<async_io_stream<Net>> stream, transport<TransportEncoding> in_codec)
: incoming_feeder_{std::move(feed)},
io_stream_{std::move(stream)},
in_codec_{std::move(in_codec)},
in_buffer_{},
out_buffer_{},
sink_read_{
io_stream_->read_done()
.then([this](size_t bytes) -> error_or<void> {
in_buffer_.write_advance(bytes);
if (in_buffer_.write_segment_length() == 0) {
return make_error<err::critical>("Message too long");
}
io_stream_->read(&in_buffer_.write(), 1,
in_buffer_.write_segment_length());
while (true) {
auto eov = in_codec_.view_slice(in_buffer_);
if(eov.is_error()){
auto& err = eov.get_error();
if(err.template is_type<err::buffer_exhausted>()){
break;
}
return std::move(err);
}
auto& view_val = eov.get_value();
/**
* Allocate buffer for the advertised length
*/
own<buffer> in_buff = heap<array_buffer>(view_val.read_composite_length());
auto eo_len = in_buff->write_from(view_val);
if(eo_len.is_error()){
return std::move(eo_len.get_error());
}
auto& len_val = eo_len.get_value();
in_buffer_.read_advance(len_val);
in_buff->write_advance(len_val);
data<Incoming, ContentEncoding> in_data{std::move(in_buff)};
incoming_feeder_->feed(std::move(in_data));
}
return void_t{};
})
.sink([this](error err) {
incoming_feeder_->fail(err.copy_error());
return err;
})},
sink_write_{io_stream_->write_done()
.then([this](size_t bytes) -> error_or<void> {
out_buffer_.read_advance(bytes);
if (out_buffer_.read_composite_length() > 0) {
io_stream_->write(
&out_buffer_.read(),
out_buffer_.read_segment_length());
}
return void_t{};
},[this](error err){
if(disconnect_feeder_){
disconnect_feeder_->feed();
}
return err;
})
.sink()
},
conveyor_feeder_{
*this
}
{
io_stream_->read(&in_buffer_.write(), 1, in_buffer_.write_segment_length());
}
template <typename Incoming, typename Outgoing, typename TransportEncoding,
typename ContentEncoding, typename Net, typename BufferT>
error_or<void> streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding, Net,
BufferT>::send(data<Outgoing, ContentEncoding>
msg) {
bool restart_write = (out_buffer_.read_segment_length() == 0u);
auto& msg_buff = msg.get_buffer();
{
auto eov = in_codec_.wrap(out_buffer_, msg_buff);
if(eov.is_error()){
auto& err = eov.get_error();
return std::move(err);
}
// auto& len_val = eov.get_value();
}
auto eov = out_buffer_.write_from(msg_buff);
if (eov.is_error()) {
auto& err = eov.get_error();
return std::move(err);
}
auto& len_val = eov.get_value();
out_buffer_.write_advance(len_val);
if (restart_write && out_buffer_.read_segment_length() > 0u) {
io_stream_->write(&out_buffer_.read(),
out_buffer_.read_segment_length());
}
return void_t{};
}
template <typename Incoming, typename Outgoing, typename TransportEncoding, typename ContentEncoding, typename Net,
typename BufferT>
conveyor<void>
streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding, Net,
BufferT>::on_disconnected() {
io_read_disconnected_ = io_stream_->on_read_disconnected().then([this](){
if(disconnect_feeder_){
disconnect_feeder_->feed();
}
}).sink();
auto caf = new_conveyor_and_feeder<void>();
disconnect_feeder_ = std::move(caf.feeder);
return std::move(caf.conveyor);
}
template <typename Incoming, typename Outgoing, typename TransportEncoding, typename ContentEncoding, typename Net, typename BufferT>
std::pair<own<streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding, Net, BufferT>>,
conveyor<data<Incoming,ContentEncoding>>>
new_streaming_io_peer(own<async_io_stream<Net>> stream) {
auto caf =
new_conveyor_and_feeder<data<Incoming, ContentEncoding>>();
return {heap<streaming_io_peer<Incoming, Outgoing, TransportEncoding, ContentEncoding,Net,BufferT>>(
std::move(caf.feeder), std::move(stream)),
std::move(caf.conveyor)};
}
} // namespace saw
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