Merge pull request 'CCSDS TCP Server' (#79) from tcp-ccsds-server into main

Reviewed-on: #79

satrs-core/src/encoding/ccsds.rs

@@ -64,7 +64,7 @@ impl PacketIdLookup for [PacketId] {
 pub fn parse_buffer_for_ccsds_space_packets<E>(
     buf: &mut [u8],
     packet_id_lookup: &(impl PacketIdLookup + ?Sized),
-    tc_receiver: &mut impl ReceivesTcCore<Error = E>,
+    tc_receiver: &mut (impl ReceivesTcCore<Error = E> + ?Sized),
     next_write_idx: &mut usize,
 ) -> Result<u32, E> {
     *next_write_idx = 0;
@@ -80,7 +80,7 @@ pub fn parse_buffer_for_ccsds_space_packets<E>(
             let length_field =
                 u16::from_be_bytes(buf[current_idx + 4..current_idx + 6].try_into().unwrap());
             let packet_size = length_field + 7;
-            if (current_idx + packet_size as usize) < buf_len {
+            if (current_idx + packet_size as usize) <= buf_len {
                 tc_receiver.pass_tc(&buf[current_idx..current_idx + packet_size as usize])?;
                 packets_found += 1;
             } else {

satrs-core/src/hal/std/mod.rs

@@ -2,5 +2,5 @@
 pub mod tcp_server;
 pub mod udp_server;
 
+mod tcp_cobs_server;
 mod tcp_spacepackets_server;
-mod tcp_with_cobs_server;

satrs-core/src/hal/std/tcp_cobs_server.rs

@@ -24,7 +24,7 @@ impl<TmError, TcError: 'static> TcpTcParser<TmError, TcError> for CobsTcParser {
     fn handle_tc_parsing(
         &mut self,
         tc_buffer: &mut [u8],
-        tc_receiver: &mut dyn ReceivesTc<Error = TcError>,
+        tc_receiver: &mut (impl ReceivesTc<Error = TcError> + ?Sized),
         conn_result: &mut ConnectionResult,
         current_write_idx: usize,
         next_write_idx: &mut usize,
@@ -59,7 +59,7 @@ impl<TmError, TcError> TcpTmSender<TmError, TcError> for CobsTmSender {
     fn handle_tm_sending(
         &mut self,
         tm_buffer: &mut [u8],
-        tm_source: &mut dyn TmPacketSource<Error = TmError>,
+        tm_source: &mut (impl TmPacketSource<Error = TmError> + ?Sized),
         conn_result: &mut ConnectionResult,
         stream: &mut TcpStream,
     ) -> Result<bool, TcpTmtcError<TmError, TcError>> {
@@ -109,7 +109,7 @@ impl<TmError, TcError> TcpTmSender<TmError, TcError> for CobsTmSender {
 ///
 /// ## Example
 ///
-/// The [TCP COBS integration](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-core/tests/tcp_server_cobs.rs)
+/// The [TCP integration tests](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-core/tests/tcp_servers.rs)
 /// test also serves as the example application for this module.
 pub struct TcpTmtcInCobsServer<TmError, TcError: 'static> {
     generic_server: TcpTmtcGenericServer<TmError, TcError, CobsTmSender, CobsTcParser>,
@@ -167,67 +167,21 @@ mod tests {
     use std::{
         io::{Read, Write},
         net::{IpAddr, Ipv4Addr, SocketAddr, TcpStream},
-        sync::Mutex,
         thread,
     };
 
     use crate::{
         encoding::tests::{INVERTED_PACKET, SIMPLE_PACKET},
-        hal::std::tcp_server::ServerConfig,
-        tmtc::{ReceivesTcCore, TmPacketSourceCore},
+        hal::std::tcp_server::{
+            tests::{SyncTcCacher, SyncTmSource},
+            ServerConfig,
+        },
     };
-    use alloc::{boxed::Box, collections::VecDeque, sync::Arc, vec::Vec};
+    use alloc::{boxed::Box, sync::Arc};
     use cobs::encode;
 
     use super::TcpTmtcInCobsServer;
 
-    #[derive(Default, Clone)]
-    struct SyncTcCacher {
-        tc_queue: Arc<Mutex<VecDeque<Vec<u8>>>>,
-    }
-    impl ReceivesTcCore for SyncTcCacher {
-        type Error = ();
-
-        fn pass_tc(&mut self, tc_raw: &[u8]) -> Result<(), Self::Error> {
-            let mut tc_queue = self.tc_queue.lock().expect("tc forwarder failed");
-            tc_queue.push_back(tc_raw.to_vec());
-            Ok(())
-        }
-    }
-
-    #[derive(Default, Clone)]
-    struct SyncTmSource {
-        tm_queue: Arc<Mutex<VecDeque<Vec<u8>>>>,
-    }
-
-    impl SyncTmSource {
-        pub(crate) fn add_tm(&mut self, tm: &[u8]) {
-            let mut tm_queue = self.tm_queue.lock().expect("locking tm queue failec");
-            tm_queue.push_back(tm.to_vec());
-        }
-    }
-
-    impl TmPacketSourceCore for SyncTmSource {
-        type Error = ();
-
-        fn retrieve_packet(&mut self, buffer: &mut [u8]) -> Result<usize, Self::Error> {
-            let mut tm_queue = self.tm_queue.lock().expect("locking tm queue failed");
-            if !tm_queue.is_empty() {
-                let next_vec = tm_queue.front().unwrap();
-                if buffer.len() < next_vec.len() {
-                    panic!(
-                        "provided buffer too small, must be at least {} bytes",
-                        next_vec.len()
-                    );
-                }
-                let next_vec = tm_queue.pop_front().unwrap();
-                buffer[0..next_vec.len()].copy_from_slice(&next_vec);
-                return Ok(next_vec.len());
-            }
-            Ok(0)
-        }
-    }
-
     fn encode_simple_packet(encoded_buf: &mut [u8], current_idx: &mut usize) {
         encode_packet(&SIMPLE_PACKET, encoded_buf, current_idx)
     }

satrs-core/src/hal/std/tcp_server.rs

@@ -12,7 +12,10 @@ use crate::tmtc::{ReceivesTc, TmPacketSource};
 use thiserror::Error;
 
 // Re-export the TMTC in COBS server.
-pub use crate::hal::std::tcp_with_cobs_server::{CobsTcParser, CobsTmSender, TcpTmtcInCobsServer};
+pub use crate::hal::std::tcp_cobs_server::{CobsTcParser, CobsTmSender, TcpTmtcInCobsServer};
+pub use crate::hal::std::tcp_spacepackets_server::{
+    SpacepacketsTcParser, SpacepacketsTmSender, TcpSpacepacketsServer,
+};
 
 /// Configuration struct for the generic TCP TMTC server
 ///
@@ -90,7 +93,7 @@ pub trait TcpTcParser<TmError, TcError> {
     fn handle_tc_parsing(
         &mut self,
         tc_buffer: &mut [u8],
-        tc_receiver: &mut dyn ReceivesTc<Error = TcError>,
+        tc_receiver: &mut (impl ReceivesTc<Error = TcError> + ?Sized),
         conn_result: &mut ConnectionResult,
         current_write_idx: usize,
         next_write_idx: &mut usize,
@@ -105,7 +108,7 @@ pub trait TcpTmSender<TmError, TcError> {
     fn handle_tm_sending(
         &mut self,
         tm_buffer: &mut [u8],
-        tm_source: &mut dyn TmPacketSource<Error = TmError>,
+        tm_source: &mut (impl TmPacketSource<Error = TmError> + ?Sized),
         conn_result: &mut ConnectionResult,
         stream: &mut TcpStream,
     ) -> Result<bool, TcpTmtcError<TmError, TcError>>;
@@ -317,3 +320,59 @@ impl<TmError, TcError> TcpTmtcServerBase<TmError, TcError> {
         self.listener.local_addr()
     }
 }
+
+#[cfg(test)]
+pub(crate) mod tests {
+    use std::sync::Mutex;
+
+    use alloc::{collections::VecDeque, sync::Arc, vec::Vec};
+
+    use crate::tmtc::{ReceivesTcCore, TmPacketSourceCore};
+
+    #[derive(Default, Clone)]
+    pub(crate) struct SyncTcCacher {
+        pub(crate) tc_queue: Arc<Mutex<VecDeque<Vec<u8>>>>,
+    }
+    impl ReceivesTcCore for SyncTcCacher {
+        type Error = ();
+
+        fn pass_tc(&mut self, tc_raw: &[u8]) -> Result<(), Self::Error> {
+            let mut tc_queue = self.tc_queue.lock().expect("tc forwarder failed");
+            tc_queue.push_back(tc_raw.to_vec());
+            Ok(())
+        }
+    }
+
+    #[derive(Default, Clone)]
+    pub(crate) struct SyncTmSource {
+        tm_queue: Arc<Mutex<VecDeque<Vec<u8>>>>,
+    }
+
+    impl SyncTmSource {
+        pub(crate) fn add_tm(&mut self, tm: &[u8]) {
+            let mut tm_queue = self.tm_queue.lock().expect("locking tm queue failec");
+            tm_queue.push_back(tm.to_vec());
+        }
+    }
+
+    impl TmPacketSourceCore for SyncTmSource {
+        type Error = ();
+
+        fn retrieve_packet(&mut self, buffer: &mut [u8]) -> Result<usize, Self::Error> {
+            let mut tm_queue = self.tm_queue.lock().expect("locking tm queue failed");
+            if !tm_queue.is_empty() {
+                let next_vec = tm_queue.front().unwrap();
+                if buffer.len() < next_vec.len() {
+                    panic!(
+                        "provided buffer too small, must be at least {} bytes",
+                        next_vec.len()
+                    );
+                }
+                let next_vec = tm_queue.pop_front().unwrap();
+                buffer[0..next_vec.len()].copy_from_slice(&next_vec);
+                return Ok(next_vec.len());
+            }
+            Ok(0)
+        }
+    }
+}

satrs-core/src/hal/std/tcp_spacepackets_server.rs

@@ -1 +1,363 @@
+use delegate::delegate;
+use std::{
+    io::Write,
+    net::{SocketAddr, TcpListener, TcpStream},
+};
 
+use alloc::boxed::Box;
+
+use crate::{
+    encoding::{ccsds::PacketIdLookup, parse_buffer_for_ccsds_space_packets},
+    tmtc::{ReceivesTc, TmPacketSource},
+};
+
+use super::tcp_server::{
+    ConnectionResult, ServerConfig, TcpTcParser, TcpTmSender, TcpTmtcError, TcpTmtcGenericServer,
+};
+
+/// Concrete [TcpTcParser] implementation for the [TcpSpacepacketsServer].
+pub struct SpacepacketsTcParser {
+    packet_id_lookup: Box<dyn PacketIdLookup + Send>,
+}
+
+impl SpacepacketsTcParser {
+    pub fn new(packet_id_lookup: Box<dyn PacketIdLookup + Send>) -> Self {
+        Self { packet_id_lookup }
+    }
+}
+
+impl<TmError, TcError: 'static> TcpTcParser<TmError, TcError> for SpacepacketsTcParser {
+    fn handle_tc_parsing(
+        &mut self,
+        tc_buffer: &mut [u8],
+        tc_receiver: &mut (impl ReceivesTc<Error = TcError> + ?Sized),
+        conn_result: &mut ConnectionResult,
+        current_write_idx: usize,
+        next_write_idx: &mut usize,
+    ) -> Result<(), TcpTmtcError<TmError, TcError>> {
+        // Reader vec full, need to parse for packets.
+        conn_result.num_received_tcs += parse_buffer_for_ccsds_space_packets(
+            &mut tc_buffer[..current_write_idx],
+            self.packet_id_lookup.as_ref(),
+            tc_receiver.upcast_mut(),
+            next_write_idx,
+        )
+        .map_err(|e| TcpTmtcError::TcError(e))?;
+        Ok(())
+    }
+}
+
+/// Concrete [TcpTmSender] implementation for the [TcpSpacepacketsServer].
+#[derive(Default)]
+pub struct SpacepacketsTmSender {}
+
+impl<TmError, TcError> TcpTmSender<TmError, TcError> for SpacepacketsTmSender {
+    fn handle_tm_sending(
+        &mut self,
+        tm_buffer: &mut [u8],
+        tm_source: &mut (impl TmPacketSource<Error = TmError> + ?Sized),
+        conn_result: &mut ConnectionResult,
+        stream: &mut TcpStream,
+    ) -> Result<bool, TcpTmtcError<TmError, TcError>> {
+        let mut tm_was_sent = false;
+        loop {
+            // Write TM until TM source is exhausted. For now, there is no limit for the amount
+            // of TM written this way.
+            let read_tm_len = tm_source
+                .retrieve_packet(tm_buffer)
+                .map_err(|e| TcpTmtcError::TmError(e))?;
+
+            if read_tm_len == 0 {
+                return Ok(tm_was_sent);
+            }
+            tm_was_sent = true;
+            conn_result.num_sent_tms += 1;
+
+            stream.write_all(&tm_buffer[..read_tm_len])?;
+        }
+    }
+}
+
+/// TCP TMTC server implementation for exchange of tightly stuffed
+/// [CCSDS space packets](https://public.ccsds.org/Pubs/133x0b2e1.pdf).
+///
+/// This serves only works if
+/// [CCSDS 133.0-B-2 space packets](https://public.ccsds.org/Pubs/133x0b2e1.pdf) are the only
+/// packet type being exchanged. It uses the CCSDS [spacepackets::PacketId] as the packet delimiter
+/// and start marker when parsing for packets. The user specifies a set of expected
+/// [spacepackets::PacketId]s as part of the server configuration for that purpose.
+///
+/// ## Example
+///
+/// The [TCP server integration tests](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-core/tests/tcp_servers.rs)
+/// also serves as the example application for this module.
+pub struct TcpSpacepacketsServer<TmError, TcError: 'static> {
+    generic_server:
+        TcpTmtcGenericServer<TmError, TcError, SpacepacketsTmSender, SpacepacketsTcParser>,
+}
+
+impl<TmError: 'static, TcError: 'static> TcpSpacepacketsServer<TmError, TcError> {
+    /// Create a new TCP TMTC server which exchanges CCSDS space packets.
+    ///
+    /// ## Parameter
+    ///
+    /// * `cfg` - Configuration of the server.
+    /// * `tm_source` - Generic TM source used by the server to pull telemetry packets which are
+    ///     then sent back to the client.
+    /// * `tc_receiver` - Any received telecommands which were decoded successfully will be
+    ///     forwarded to this TC receiver.
+    /// * `packet_id_lookup` - This lookup table contains the relevant packets IDs for packet
+    ///     parsing. This mechanism is used to have a start marker for finding CCSDS packets.
+    pub fn new(
+        cfg: ServerConfig,
+        tm_source: Box<dyn TmPacketSource<Error = TmError>>,
+        tc_receiver: Box<dyn ReceivesTc<Error = TcError>>,
+        packet_id_lookup: Box<dyn PacketIdLookup + Send>,
+    ) -> Result<Self, TcpTmtcError<TmError, TcError>> {
+        Ok(Self {
+            generic_server: TcpTmtcGenericServer::new(
+                cfg,
+                SpacepacketsTcParser::new(packet_id_lookup),
+                SpacepacketsTmSender::default(),
+                tm_source,
+                tc_receiver,
+            )?,
+        })
+    }
+
+    delegate! {
+        to self.generic_server {
+            pub fn listener(&mut self) -> &mut TcpListener;
+
+            /// Can be used to retrieve the local assigned address of the TCP server. This is especially
+            /// useful if using the port number 0 for OS auto-assignment.
+            pub fn local_addr(&self) -> std::io::Result<SocketAddr>;
+
+            /// Delegation to the [TcpTmtcGenericServer::handle_next_connection] call.
+            pub fn handle_next_connection(
+                &mut self,
+            ) -> Result<ConnectionResult, TcpTmtcError<TmError, TcError>>;
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use core::{
+        sync::atomic::{AtomicBool, Ordering},
+        time::Duration,
+    };
+    #[allow(unused_imports)]
+    use std::println;
+    use std::{
+        io::{Read, Write},
+        net::{IpAddr, Ipv4Addr, SocketAddr, TcpStream},
+        thread,
+    };
+
+    use alloc::{boxed::Box, sync::Arc};
+    use hashbrown::HashSet;
+    use spacepackets::{
+        ecss::{tc::PusTcCreator, SerializablePusPacket},
+        PacketId, SpHeader,
+    };
+
+    use crate::hal::std::tcp_server::{
+        tests::{SyncTcCacher, SyncTmSource},
+        ServerConfig,
+    };
+
+    use super::TcpSpacepacketsServer;
+
+    const TEST_APID_0: u16 = 0x02;
+    const TEST_PACKET_ID_0: PacketId = PacketId::const_tc(true, TEST_APID_0);
+    const TEST_APID_1: u16 = 0x10;
+    const TEST_PACKET_ID_1: PacketId = PacketId::const_tc(true, TEST_APID_1);
+
+    fn generic_tmtc_server(
+        addr: &SocketAddr,
+        tc_receiver: SyncTcCacher,
+        tm_source: SyncTmSource,
+        packet_id_lookup: HashSet<PacketId>,
+    ) -> TcpSpacepacketsServer<(), ()> {
+        TcpSpacepacketsServer::new(
+            ServerConfig::new(*addr, Duration::from_millis(2), 1024, 1024),
+            Box::new(tm_source),
+            Box::new(tc_receiver),
+            Box::new(packet_id_lookup),
+        )
+        .expect("TCP server generation failed")
+    }
+
+    #[test]
+    fn test_basic_tc_only() {
+        let auto_port_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 0);
+        let tc_receiver = SyncTcCacher::default();
+        let tm_source = SyncTmSource::default();
+        let mut packet_id_lookup = HashSet::new();
+        packet_id_lookup.insert(TEST_PACKET_ID_0);
+        let mut tcp_server = generic_tmtc_server(
+            &auto_port_addr,
+            tc_receiver.clone(),
+            tm_source,
+            packet_id_lookup,
+        );
+        let dest_addr = tcp_server
+            .local_addr()
+            .expect("retrieving dest addr failed");
+        let conn_handled: Arc<AtomicBool> = Default::default();
+        let set_if_done = conn_handled.clone();
+        // Call the connection handler in separate thread, does block.
+        thread::spawn(move || {
+            let result = tcp_server.handle_next_connection();
+            if result.is_err() {
+                panic!("handling connection failed: {:?}", result.unwrap_err());
+            }
+            let conn_result = result.unwrap();
+            assert_eq!(conn_result.num_received_tcs, 1);
+            assert_eq!(conn_result.num_sent_tms, 0);
+            set_if_done.store(true, Ordering::Relaxed);
+        });
+        let mut sph = SpHeader::tc_unseg(TEST_APID_0, 0, 0).unwrap();
+        let ping_tc = PusTcCreator::new_simple(&mut sph, 17, 1, None, true);
+        let mut buffer: [u8; 32] = [0; 32];
+        let packet_len_ping = ping_tc
+            .write_to_bytes(&mut buffer)
+            .expect("writing packet failed");
+        let mut stream = TcpStream::connect(dest_addr).expect("connecting to TCP server failed");
+        stream
+            .write_all(&buffer[..packet_len_ping])
+            .expect("writing to TCP server failed");
+        drop(stream);
+
+        // A certain amount of time is allowed for the transaction to complete.
+        for _ in 0..3 {
+            if !conn_handled.load(Ordering::Relaxed) {
+                thread::sleep(Duration::from_millis(5));
+            }
+        }
+        if !conn_handled.load(Ordering::Relaxed) {
+            panic!("connection was not handled properly");
+        }
+        // Check that TC has arrived.
+        let mut tc_queue = tc_receiver.tc_queue.lock().unwrap();
+        assert_eq!(tc_queue.len(), 1);
+        assert_eq!(tc_queue.pop_front().unwrap(), buffer[..packet_len_ping]);
+    }
+
+    #[test]
+    fn test_multi_tc_multi_tm() {
+        let mut buffer: [u8; 32] = [0; 32];
+        let auto_port_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 0);
+        let tc_receiver = SyncTcCacher::default();
+        let mut tm_source = SyncTmSource::default();
+
+        // Add telemetry
+        let mut total_tm_len = 0;
+        let mut sph = SpHeader::tc_unseg(TEST_APID_0, 0, 0).unwrap();
+        let verif_tm = PusTcCreator::new_simple(&mut sph, 1, 1, None, true);
+        let tm_packet_len = verif_tm
+            .write_to_bytes(&mut buffer)
+            .expect("writing packet failed");
+        total_tm_len += tm_packet_len;
+        let tm_0 = buffer[..tm_packet_len].to_vec();
+        tm_source.add_tm(&tm_0);
+        let mut sph = SpHeader::tc_unseg(TEST_APID_1, 0, 0).unwrap();
+        let verif_tm = PusTcCreator::new_simple(&mut sph, 1, 3, None, true);
+        let tm_packet_len = verif_tm
+            .write_to_bytes(&mut buffer)
+            .expect("writing packet failed");
+        total_tm_len += tm_packet_len;
+        let tm_1 = buffer[..tm_packet_len].to_vec();
+        tm_source.add_tm(&tm_1);
+
+        // Set up server
+        let mut packet_id_lookup = HashSet::new();
+        packet_id_lookup.insert(TEST_PACKET_ID_0);
+        packet_id_lookup.insert(TEST_PACKET_ID_1);
+        let mut tcp_server = generic_tmtc_server(
+            &auto_port_addr,
+            tc_receiver.clone(),
+            tm_source,
+            packet_id_lookup,
+        );
+        let dest_addr = tcp_server
+            .local_addr()
+            .expect("retrieving dest addr failed");
+        let conn_handled: Arc<AtomicBool> = Default::default();
+        let set_if_done = conn_handled.clone();
+
+        // Call the connection handler in separate thread, does block.
+        thread::spawn(move || {
+            let result = tcp_server.handle_next_connection();
+            if result.is_err() {
+                panic!("handling connection failed: {:?}", result.unwrap_err());
+            }
+            let conn_result = result.unwrap();
+            assert_eq!(
+                conn_result.num_received_tcs, 2,
+                "wrong number of received TCs"
+            );
+            assert_eq!(conn_result.num_sent_tms, 2, "wrong number of sent TMs");
+            set_if_done.store(true, Ordering::Relaxed);
+        });
+        let mut stream = TcpStream::connect(dest_addr).expect("connecting to TCP server failed");
+        stream
+            .set_read_timeout(Some(Duration::from_millis(10)))
+            .expect("setting reas timeout failed");
+
+        // Send telecommands
+        let mut sph = SpHeader::tc_unseg(TEST_APID_0, 0, 0).unwrap();
+        let ping_tc = PusTcCreator::new_simple(&mut sph, 17, 1, None, true);
+        let packet_len = ping_tc
+            .write_to_bytes(&mut buffer)
+            .expect("writing packet failed");
+        let tc_0 = buffer[..packet_len].to_vec();
+        stream
+            .write_all(&tc_0)
+            .expect("writing to TCP server failed");
+        let mut sph = SpHeader::tc_unseg(TEST_APID_1, 0, 0).unwrap();
+        let action_tc = PusTcCreator::new_simple(&mut sph, 8, 0, None, true);
+        let packet_len = action_tc
+            .write_to_bytes(&mut buffer)
+            .expect("writing packet failed");
+        let tc_1 = buffer[..packet_len].to_vec();
+        stream
+            .write_all(&tc_1)
+            .expect("writing to TCP server failed");
+
+        // Done with writing.
+        stream
+            .shutdown(std::net::Shutdown::Write)
+            .expect("shutting down write failed");
+        let mut read_buf: [u8; 32] = [0; 32];
+        let mut current_idx = 0;
+        let mut read_len_total = 0;
+        // Timeout ensures this does not block forever.
+        while read_len_total < total_tm_len {
+            let read_len = stream
+                .read(&mut read_buf[current_idx..])
+                .expect("read failed");
+            current_idx += read_len;
+            read_len_total += read_len;
+        }
+        drop(stream);
+        assert_eq!(read_buf[..tm_0.len()], tm_0);
+        assert_eq!(read_buf[tm_0.len()..tm_0.len() + tm_1.len()], tm_1);
+
+        // A certain amount of time is allowed for the transaction to complete.
+        for _ in 0..3 {
+            if !conn_handled.load(Ordering::Relaxed) {
+                thread::sleep(Duration::from_millis(5));
+            }
+        }
+        if !conn_handled.load(Ordering::Relaxed) {
+            panic!("connection was not handled properly");
+        }
+        // Check that TC has arrived.
+        let mut tc_queue = tc_receiver.tc_queue.lock().unwrap();
+        assert_eq!(tc_queue.len(), 2);
+        assert_eq!(tc_queue.pop_front().unwrap(), tc_0);
+        assert_eq!(tc_queue.pop_front().unwrap(), tc_1);
+    }
+}

satrs-core/tests/tcp_servers.rs

@@ -21,11 +21,16 @@ use std::{
     thread,
 };
 
+use hashbrown::HashSet;
 use satrs_core::{
     encoding::cobs::encode_packet_with_cobs,
-    hal::std::tcp_server::{ServerConfig, TcpTmtcInCobsServer},
+    hal::std::tcp_server::{ServerConfig, TcpSpacepacketsServer, TcpTmtcInCobsServer},
     tmtc::{ReceivesTcCore, TmPacketSourceCore},
 };
+use spacepackets::{
+    ecss::{tc::PusTcCreator, SerializablePusPacket},
+    PacketId, SpHeader,
+};
 use std::{boxed::Box, collections::VecDeque, sync::Arc, vec::Vec};
 
 #[derive(Default, Clone)]
@@ -79,15 +84,16 @@ impl TmPacketSourceCore for SyncTmSource {
 
 const SIMPLE_PACKET: [u8; 5] = [1, 2, 3, 4, 5];
 const INVERTED_PACKET: [u8; 5] = [5, 4, 3, 4, 1];
+const AUTO_PORT_ADDR: SocketAddr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 0);
 
-fn main() {
-    let auto_port_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 0);
+#[test]
+fn test_cobs_server() {
     let tc_receiver = SyncTcCacher::default();
     let mut tm_source = SyncTmSource::default();
     // Insert a telemetry packet which will be read back by the client at a later stage.
     tm_source.add_tm(&INVERTED_PACKET);
     let mut tcp_server = TcpTmtcInCobsServer::new(
-        ServerConfig::new(auto_port_addr, Duration::from_millis(2), 1024, 1024),
+        ServerConfig::new(AUTO_PORT_ADDR, Duration::from_millis(2), 1024, 1024),
         Box::new(tm_source),
         Box::new(tc_receiver.clone()),
     )
@@ -154,3 +160,85 @@ fn main() {
     assert_eq!(tc_queue.pop_front().unwrap(), &SIMPLE_PACKET);
     drop(tc_queue);
 }
+
+const TEST_APID_0: u16 = 0x02;
+const TEST_PACKET_ID_0: PacketId = PacketId::const_tc(true, TEST_APID_0);
+
+#[test]
+fn test_ccsds_server() {
+    let mut buffer: [u8; 32] = [0; 32];
+    let tc_receiver = SyncTcCacher::default();
+    let mut tm_source = SyncTmSource::default();
+    let mut sph = SpHeader::tc_unseg(TEST_APID_0, 0, 0).unwrap();
+    let verif_tm = PusTcCreator::new_simple(&mut sph, 1, 1, None, true);
+    let tm_packet_len = verif_tm
+        .write_to_bytes(&mut buffer)
+        .expect("writing packet failed");
+    tm_source.add_tm(&buffer[..tm_packet_len]);
+    let tm_vec = buffer[..tm_packet_len].to_vec();
+    let mut packet_id_lookup = HashSet::new();
+    packet_id_lookup.insert(TEST_PACKET_ID_0);
+    let mut tcp_server = TcpSpacepacketsServer::new(
+        ServerConfig::new(AUTO_PORT_ADDR, Duration::from_millis(2), 1024, 1024),
+        Box::new(tm_source),
+        Box::new(tc_receiver.clone()),
+        Box::new(packet_id_lookup),
+    )
+    .expect("TCP server generation failed");
+    let dest_addr = tcp_server
+        .local_addr()
+        .expect("retrieving dest addr failed");
+    let conn_handled: Arc<AtomicBool> = Default::default();
+    let set_if_done = conn_handled.clone();
+    // Call the connection handler in separate thread, does block.
+    thread::spawn(move || {
+        let result = tcp_server.handle_next_connection();
+        if result.is_err() {
+            panic!("handling connection failed: {:?}", result.unwrap_err());
+        }
+        let conn_result = result.unwrap();
+        assert_eq!(conn_result.num_received_tcs, 1);
+        assert_eq!(conn_result.num_sent_tms, 1);
+        set_if_done.store(true, Ordering::Relaxed);
+    });
+    let mut stream = TcpStream::connect(dest_addr).expect("connecting to TCP server failed");
+    let mut sph = SpHeader::tc_unseg(TEST_APID_0, 0, 0).unwrap();
+    let ping_tc = PusTcCreator::new_simple(&mut sph, 17, 1, None, true);
+    stream
+        .set_read_timeout(Some(Duration::from_millis(10)))
+        .expect("setting reas timeout failed");
+    let packet_len = ping_tc
+        .write_to_bytes(&mut buffer)
+        .expect("writing packet failed");
+    stream
+        .write_all(&buffer[..packet_len])
+        .expect("writing to TCP server failed");
+
+    // Done with writing.
+    stream
+        .shutdown(std::net::Shutdown::Write)
+        .expect("shutting down write failed");
+    let mut read_buf: [u8; 16] = [0; 16];
+    let mut read_len_total = 0;
+    // Timeout ensures this does not block forever.
+    while read_len_total < tm_packet_len {
+        let read_len = stream.read(&mut read_buf).expect("read failed");
+        read_len_total += read_len;
+        assert_eq!(read_buf[..read_len], tm_vec);
+    }
+    drop(stream);
+
+    // A certain amount of time is allowed for the transaction to complete.
+    for _ in 0..3 {
+        if !conn_handled.load(Ordering::Relaxed) {
+            thread::sleep(Duration::from_millis(5));
+        }
+    }
+    if !conn_handled.load(Ordering::Relaxed) {
+        panic!("connection was not handled properly");
+    }
+    // Check that TC has arrived.
+    let mut tc_queue = tc_receiver.tc_queue.lock().unwrap();
+    assert_eq!(tc_queue.len(), 1);
+    assert_eq!(tc_queue.pop_front().unwrap(), buffer[..packet_len]);
+}