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T8b949e//! Bidirectional TCP ↔ RNS relay — used by both client and server sessions.

Tff7b72use Te6edf3std::Te6edf3sync::Te6edf3ArcTb4b4b4;

Tff7b72use Te6edf3std::Te6edf3time::Te6edf3DurationTb4b4b4;

Tff7b72use Te6edf3fast_socks5::Te6edf3parse_udp_requestTb4b4b4;

Tff7b72use Te6edf3fast_socks5::Te6edf3util::Te6edf3target_addr::Tb4b4b4{Te6edf3TargetAddrTb4b4b4, Te6edf3ToTargetAddrTb4b4b4}Tb4b4b4;

Tff7b72use Te6edf3log::Tb4b4b4{Te6edf3debugTb4b4b4, Te6edf3warnTb4b4b4}Tb4b4b4;

Tff7b72use Te6edf3tokio::Te6edf3io::Tb4b4b4{Te6edf3AsyncReadExtTb4b4b4, Te6edf3AsyncWriteExtTb4b4b4}Tb4b4b4;

Tff7b72use Te6edf3tokio::Te6edf3net::Te6edf3unix::Te6edf3SocketAddrTb4b4b4;

Tff7b72use Te6edf3tokio::Te6edf3sync::Te6edf3mpscTb4b4b4;

Tff7b72use Tff7b72crate::Te6edf3frame::Tb4b4b4{Te6edf3FrameTb4b4b4, Te6edf3FrameTypeTb4b4b4}Tb4b4b4;

Tff7b72use Tff7b72crate::Te6edf3mux::Te6edf3MuxHandleTb4b4b4;

T8b949e/// Relay data bidirectionally between a TCP stream and an RNS mux session.

T8b949e///

T8b949e/// Sends a `Close` frame and drops the session when either direction finishes.

Tff7b72pub Tff7b72async Tff7b72fn Td2a8ffrelay_bidirectional_tcpTb4b4b4(

Te6edf3sid: Tffa657u32Tb4b4b4,

Te6edf3stream: T56d364tokio::Te6edf3net::Te6edf3TcpStreamTb4b4b4,

Te6edf3mux: T56d364MuxHandleTb4b4b4,

Tff7b72mut Te6edf3session_rx: T56d364mpsc::Te6edf3UnboundedReceiverTff7b72<Te6edf3FrameTff7b72>Tb4b4b4,

Tb4b4b4) Tb4b4b4{

Tff7b72let Tb4b4b4(Tff7b72mut Te6edf3tcp_readTb4b4b4, Tff7b72mut Te6edf3tcp_writeTb4b4b4) Tff7b72= Te6edf3streamTb4b4b4.Te6edf3into_splitTb4b4b4(Tb4b4b4)Tb4b4b4;

Tff7b72let Te6edf3mux_fwd Tff7b72= Te6edf3muxTb4b4b4.Te6edf3cloneTb4b4b4(Tb4b4b4)Tb4b4b4;

T8b949e// TCP -> RNS

Tff7b72let Te6edf3tcp_to_rns Tff7b72= Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Tff7b72let Tff7b72mut Te6edf3buf Tff7b72= Tb4b4b4[T79c0ff0Tff7b72u8Tb4b4b4; T79c0ff4096Tb4b4b4]Tb4b4b4;

Tff7b72loop Tb4b4b4{

Tff7b72match Te6edf3tcp_readTb4b4b4.Te6edf3readTb4b4b4(Tff7b72&Tff7b72mut Te6edf3bufTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tffa657OkTb4b4b4(T79c0ff0Tb4b4b4) Tff7b72=Tff7b72> Tff7b72breakTb4b4b4,

Tffa657OkTb4b4b4(Te6edf3nTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3mux_fwdTb4b4b4.Te6edf3sendTb4b4b4(Te6edf3FrameType::Te6edf3DataTb4b4b4, Te6edf3sidTb4b4b4, Te6edf3bufTb4b4b4[Tff7b72..Te6edf3nTb4b4b4]Tb4b4b4.Te6edf3to_vecTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4;

Tb4b4b4}

Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3debugTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] TCP read error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}

Tb4b4b4}Tb4b4b4)Tb4b4b4;

T8b949e// RNS -> TCP

Tff7b72let Te6edf3rns_to_tcp Tff7b72= Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Tff7b72while Tff7b72let Tffa657SomeTb4b4b4(Te6edf3frameTb4b4b4) Tff7b72= Te6edf3session_rxTb4b4b4.Te6edf3recvTb4b4b4(Tb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tff7b72match Te6edf3frameTb4b4b4.Te6edf3frame_type Tb4b4b4{

Te6edf3FrameType::Te6edf3Data Tff7b72=Tff7b72> Tb4b4b4{

Tff7b72if Tff7b72let Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72= Te6edf3tcp_writeTb4b4b4.Te6edf3write_allTb4b4b4(Tff7b72&Te6edf3frameTb4b4b4.Te6edf3payloadTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Te6edf3warnTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] TCP write error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}

Te6edf3FrameType::Te6edf3Close Tff7b72=Tff7b72> Tff7b72breakTb4b4b4,

Te6edf3_ Tff7b72=Tff7b72> Tb4b4b4{Tb4b4b4}

Tb4b4b4}

Tb4b4b4}Tb4b4b4)Tb4b4b4;

Te6edf3tokio::Te6edf3selectTff7b72! Tb4b4b4{

Te6edf3_ Tff7b72= Te6edf3tcp_to_rns Tff7b72=Tff7b72> Tb4b4b4{Tb4b4b4}Tb4b4b4,

Te6edf3_ Tff7b72= Te6edf3rns_to_tcp Tff7b72=Tff7b72> Tb4b4b4{Tb4b4b4}Tb4b4b4,

Tb4b4b4}

Te6edf3muxTb4b4b4.Te6edf3sendTb4b4b4(Te6edf3FrameType::Te6edf3CloseTb4b4b4, Te6edf3sidTb4b4b4, Tffa657Vec::Te6edf3newTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4;

Te6edf3muxTb4b4b4.Te6edf3drop_sessionTb4b4b4(Te6edf3sidTb4b4b4)Tb4b4b4;

Tb4b4b4}

T8b949e// udp must still have an associated tcp connection to detect when the connection is over.

T8b949e// this does not apply to the server (as in rns server) as it detects that the frame is being closed

T8b949e// udp doesn't have a connetcion so the server cannot detect that the remote server the client is connecting

T8b949e// to is offline per say.

T8b949e//

T8b949e// basically, the client can stop the udp connection either by the reticulum link breaking

T8b949e// OR the process using the udp connection stops

T8b949e// while the server only stops in the first scenario because the server cannot know if the remote

T8b949e// server not responding is part of the protocol.

Tff7b72pub Tff7b72async Tff7b72fn Td2a8ffrelay_bidirectional_udpTb4b4b4(

Te6edf3sid: Tffa657u32Tb4b4b4,

Te6edf3socket: T56d364tokio::Te6edf3net::Te6edf3UdpSocketTb4b4b4,

Te6edf3tcp_stream: Tffa657OptionTff7b72<Te6edf3tokio::Te6edf3net::Te6edf3TcpStreamTff7b72>Tb4b4b4,

Te6edf3mux: T56d364MuxHandleTb4b4b4,

Tff7b72mut Te6edf3session_rx: T56d364mpsc::Te6edf3UnboundedReceiverTff7b72<Te6edf3FrameTff7b72>Tb4b4b4,

Tb4b4b4) Tb4b4b4{

Tff7b72let Te6edf3socket Tff7b72= Te6edf3Arc::Te6edf3newTb4b4b4(Te6edf3socketTb4b4b4)Tb4b4b4;

Tff7b72let Te6edf3socket1 Tff7b72= Te6edf3socketTb4b4b4.Te6edf3cloneTb4b4b4(Tb4b4b4)Tb4b4b4;

Tff7b72let Te6edf3mux_fwd Tff7b72= Te6edf3muxTb4b4b4.Te6edf3cloneTb4b4b4(Tb4b4b4)Tb4b4b4;

T8b949e// UDP -> RNS

Tff7b72let Te6edf3udp_to_rns Tff7b72= Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Tff7b72let Tff7b72mut Te6edf3buf Tff7b72= Tb4b4b4[T79c0ff0Tff7b72u8Tb4b4b4; T79c0ff4096Tb4b4b4]Tb4b4b4;

Tff7b72loop Tb4b4b4{

Tff7b72match Te6edf3socketTb4b4b4.Te6edf3recv_fromTb4b4b4(Tff7b72&Tff7b72mut Te6edf3bufTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tffa657OkTb4b4b4(Tb4b4b4(T79c0ff0Tb4b4b4,Te6edf3_Tb4b4b4)Tb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffend for some reasonTa5d6ff"Tb4b4b4)Tb4b4b4; Tff7b72breakTb4b4b4}Tb4b4b4,

Tffa657OkTb4b4b4(Tb4b4b4(Te6edf3nTb4b4b4,Te6edf3addrTb4b4b4)Tb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsending udp to rns data {:?} {:?}Ta5d6ff"Tb4b4b4, Tff7b72&Te6edf3bufTb4b4b4[Tff7b72..Te6edf3nTb4b4b4]Tb4b4b4, Te6edf3addrTb4b4b4)Tb4b4b4;

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsending udp to rns data {:?}Ta5d6ff"Tb4b4b4, Tffa657String::Te6edf3from_utf8_lossyTb4b4b4(Tff7b72&Te6edf3bufTb4b4b4[Tff7b72..Te6edf3nTb4b4b4]Tb4b4b4)Tb4b4b4)Tb4b4b4;

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsid: {:?} Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4)Tb4b4b4;

Te6edf3mux_fwdTb4b4b4.Te6edf3sendTb4b4b4(Te6edf3FrameType::Te6edf3DataTb4b4b4, Te6edf3sidTb4b4b4, Te6edf3bufTb4b4b4[Tff7b72..Te6edf3nTb4b4b4]Tb4b4b4.Te6edf3to_vecTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4;

Tb4b4b4}

Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3debugTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] UDP read error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}

Tb4b4b4}Tb4b4b4)Tb4b4b4;

T8b949e// RNS -> UDP

Tff7b72let Te6edf3rns_to_udp Tff7b72= Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Tff7b72loop Tb4b4b4{

Tff7b72if Tff7b72let Tffa657SomeTb4b4b4(Te6edf3frameTb4b4b4) Tff7b72= Te6edf3session_rxTb4b4b4.Te6edf3recvTb4b4b4(Tb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffkilledTa5d6ff"Tb4b4b4)Tb4b4b4;

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ff{:?}Ta5d6ff"Tb4b4b4, Te6edf3frameTb4b4b4)Tb4b4b4;

Tff7b72match Te6edf3frameTb4b4b4.Te6edf3frame_type Tb4b4b4{

Te6edf3FrameType::Te6edf3Data Tff7b72=Tff7b72> Tb4b4b4{

Tff7b72match Te6edf3parse_udp_requestTb4b4b4(Tff7b72&Tff7b72*Te6edf3frameTb4b4b4.Te6edf3payloadTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tffa657OkTb4b4b4(Tb4b4b4(Te6edf3fragTb4b4b4,Te6edf3addrTb4b4b4,Te6edf3dataTb4b4b4)Tb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsending rns to udp data {:?}:{:?}:{:?}Ta5d6ff"Tb4b4b4, Te6edf3fragTb4b4b4, Te6edf3addrTb4b4b4, Te6edf3dataTb4b4b4)Tb4b4b4;

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsending rns to udp data {:?}Ta5d6ff"Tb4b4b4, Tffa657String::Te6edf3from_utf8_lossyTb4b4b4(Te6edf3dataTb4b4b4)Tb4b4b4)Tb4b4b4;

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsending from: {:?} to {:?}Ta5d6ff"Tb4b4b4, Te6edf3socket1Tb4b4b4.Te6edf3local_addrTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3addrTb4b4b4)Tb4b4b4;

Tff7b72let Te6edf3target Tff7b72= Te6edf3addrTb4b4b4.Te6edf3into_string_and_portTb4b4b4(Tb4b4b4)Tb4b4b4; T8b949e// string conversion is the only way to convert

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ff{:?}Ta5d6ff"Tb4b4b4, Te6edf3targetTb4b4b4)Tb4b4b4;

T8b949e// between the tokio and fastsocksv5 versions for some reason

Tff7b72if Tff7b72let Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72= Te6edf3socket1Tb4b4b4.Te6edf3send_toTb4b4b4(Te6edf3dataTb4b4b4,Te6edf3targetTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Te6edf3warnTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] UDP write error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4} Tff7b72else Tb4b4b4{

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffsent packetTa5d6ff"Tb4b4b4)

Tb4b4b4}

Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3debugTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] UDP read error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72break

Tb4b4b4}

Tb4b4b4}Tb4b4b4;

Tb4b4b4}

Te6edf3FrameType::Te6edf3Close Tff7b72=Tff7b72> Tb4b4b4{Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffframe closed {:?}Ta5d6ff"Tb4b4b4, Te6edf3frameTb4b4b4)Tb4b4b4; Tff7b72breakTb4b4b4}Tb4b4b4,

Te6edf3_ Tff7b72=Tff7b72> Tb4b4b4{Tb4b4b4}

Tb4b4b4}

Tb4b4b4} Tff7b72else Tb4b4b4{

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffended socket stream?Ta5d6ff"Tb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}Tb4b4b4;

Tb4b4b4}

Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffendedTa5d6ff"Tb4b4b4)Tb4b4b4;

Tb4b4b4}Tb4b4b4)Tb4b4b4;

Tff7b72let Te6edf3break_connection_tcp_check Tff7b72= Tff7b72match Te6edf3tcp_stream Tb4b4b4{

Tffa657SomeTb4b4b4(Te6edf3tcp_streamTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Tff7b72let Tb4b4b4(Tff7b72mut Te6edf3tcp_readTb4b4b4, Tff7b72mut Te6edf3tcp_writeTb4b4b4) Tff7b72= Te6edf3tcp_streamTb4b4b4.Te6edf3into_splitTb4b4b4(Tb4b4b4)Tb4b4b4;

Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Tff7b72let Tff7b72mut Te6edf3buf Tff7b72= Tb4b4b4[T79c0ff0Tff7b72u8Tb4b4b4; T79c0ff4096Tb4b4b4]Tb4b4b4;

Tff7b72loop Tb4b4b4{

Tff7b72match Te6edf3tcp_readTb4b4b4.Te6edf3readTb4b4b4(Tff7b72&Tff7b72mut Te6edf3bufTb4b4b4)Tb4b4b4.Tff7b72await Tb4b4b4{

Tffa657OkTb4b4b4(T79c0ff0Tb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3debugTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6fftcp connectioned associated with udp died {:?}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}Tb4b4b4,

Tffa657OkTb4b4b4(Te6edf3nTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3warnTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ffclient still sending tcp through udp port {:?} {:?}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Tff7b72&Te6edf3bufTb4b4b4[T79c0ff0Tff7b72..Te6edf3nTb4b4b4]Tb4b4b4)

Tb4b4b4}

Tffa657ErrTb4b4b4(Te6edf3eTb4b4b4) Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3debugTff7b72!Tb4b4b4(Ta5d6ff"Ta5d6ff[{}] TCP read error: {}Ta5d6ff"Tb4b4b4, Te6edf3sidTb4b4b4, Te6edf3eTb4b4b4)Tb4b4b4;

Tff7b72breakTb4b4b4;

Tb4b4b4}

Tb4b4b4}Tb4b4b4)

Tb4b4b4}

Tffa657None Tff7b72=Tff7b72> Tb4b4b4{

Te6edf3tokio::Te6edf3spawnTb4b4b4(Tff7b72async Tff7b72move Tb4b4b4{

Te6edf3tokio::Te6edf3time::Te6edf3sleepTb4b4b4(Te6edf3Duration::Te6edf3from_hoursTb4b4b4(T79c0ff100000000000Tb4b4b4)Tb4b4b4)Tb4b4b4.Tff7b72awaitTb4b4b4; T8b949e// lmao // I can't be bothered importing the empty future thing.

Tb4b4b4}Tb4b4b4)

Tb4b4b4}

Tb4b4b4}Tb4b4b4;

Te6edf3tokio::Te6edf3selectTff7b72! Tb4b4b4{

Te6edf3_ Tff7b72= Te6edf3udp_to_rns Tff7b72=Tff7b72> Tb4b4b4{Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffudp endTa5d6ff"Tb4b4b4)Tb4b4b4}Tb4b4b4,

Te6edf3_ Tff7b72= Te6edf3rns_to_udp Tff7b72=Tff7b72> Tb4b4b4{Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6ffrns endTa5d6ff"Tb4b4b4)Tb4b4b4}Tb4b4b4,

Te6edf3_ Tff7b72= Te6edf3break_connection_tcp_check Tff7b72=Tff7b72> Tb4b4b4{Tff7b72println!Tb4b4b4(Ta5d6ff"Ta5d6fftcp endTa5d6ff"Tb4b4b4)Tb4b4b4}Tb4b4b4,

Tb4b4b4}

Te6edf3muxTb4b4b4.Te6edf3sendTb4b4b4(Te6edf3FrameType::Te6edf3CloseTb4b4b4, Te6edf3sidTb4b4b4, Tffa657Vec::Te6edf3newTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4;

Te6edf3muxTb4b4b4.Te6edf3drop_sessionTb4b4b4(Te6edf3sidTb4b4b4)Tb4b4b4;

Tb4b4b4}