From a51d012bb1e7d34ff5e27bebccd8026bc731515c Mon Sep 17 00:00:00 2001
From: Claudius 'keldu' Holeksa <mail@keldu.de>
Date: Wed, 7 Aug 2024 17:17:43 +0200
Subject: Weird behaviour in peer client. Connection being established even
 though no server exists

---
 modules/io_codec/examples/peer_echo_server.cpp | 70 +++++++++++++++++++++++++-
 1 file changed, 69 insertions(+), 1 deletion(-)

(limited to 'modules/io_codec/examples/peer_echo_server.cpp')

diff --git a/modules/io_codec/examples/peer_echo_server.cpp b/modules/io_codec/examples/peer_echo_server.cpp
index ec8cf8d..a949ff5 100644
--- a/modules/io_codec/examples/peer_echo_server.cpp
+++ b/modules/io_codec/examples/peer_echo_server.cpp
@@ -2,9 +2,13 @@
 
 #include "../c++/io_peer.hpp"
 
+#include <forstio/codec/transport.hpp>
+
 #include <iostream>
 
 int main(){
+	using namespace saw;
+
 	auto eo_aio = saw::setup_async_io();
 	if(eo_aio.is_error()){
 		auto& err = eo_aio.get_error();
@@ -15,7 +19,7 @@ int main(){
 	/**
 	 * Make the event loop the current event loop on this thread
 	 */
-	saw::wait_scope wait_scope{aio.event_loop};
+	saw::wait_scope wait{aio.event_loop};
 
 	bool keep_running = true;
 	aio.event_port.on_signal(saw::Signal::Terminate).then([&keep_running](){
@@ -24,5 +28,69 @@ int main(){
 
 	auto& network = aio.io->get_network();
 
+	auto eo_addr = network.resolve_address(saw::echo_address, saw::echo_port).take();
+	if(eo_addr.is_error()){
+		return -1;
+	}
+	auto& addr = eo_addr.get_value();
+
+	data<sch::Echo> nat_echo{"hello"};
+	data<sch::Echo, encode::KelSimple> simple_echo;
+	codec<sch::Echo, encode::KelSimple> simple_codec;
+
+	{
+		auto eov = simple_codec.encode(nat_echo, simple_echo);
+		if(eov.is_error()){
+			return -1;
+		}
+	}
+
+	auto echo_srv = network.listen(*addr);
+	if(!echo_srv){
+		return -2;
+	}
+
+	echo_srv->accept().then([&](saw::own<saw::io_stream> client){
+		if(!client){
+			keep_running = false;
+			return;
+		}
+		auto echo_stream = saw::heap<saw::async_io_stream>(std::move(client));
+		auto echo_peer_stream_p = saw::new_streaming_io_peer<sch::Echo, sch::Echo, trans::FixedLength<8u>, encode::KelSimple, ring_buffer>(std::move(echo_stream));
+
+		
+		echo_peer_stream_p.second.then([&](auto simp_resp) -> error_or<void>{
+			data<sch::Echo> nat_resp;
+			{
+				auto eov = simple_codec.decode(simp_resp, nat_resp);
+				if(eov.is_error()){
+					return eov;
+				}
+			}
+			std::cout<<"Request:\n";
+			for(uint64_t i = 0u; i < nat_resp.size(); ++i){
+				std::cout<<nat_resp.at(i);
+			}
+			std::cout<<std::endl;
+
+			{
+				auto eo_send = echo_peer_stream_p.first->send(std::move(simp_resp));
+				if(eo_send.is_error()){
+					auto& err = eo_send.get_error();
+					return std::move(err);
+				}
+			}
+			return make_void();
+		}).detach();
+		
+		echo_peer_stream_p.first->on_read_disconnected().attach(std::move(echo_peer_stream_p.first)).then([]() -> error_or<void>{
+			return make_error<err::critical>("Destroy pipeline on purpose :>");
+		}).detach();
+	}).detach();
+
+	while(keep_running){
+		wait.wait(std::chrono::seconds{1u});
+	}
+
 	return 0;
 }
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