Networking update

.gitignore

@@ -7,3 +7,4 @@
 
 # Ignore logs folder generared by application.
 /logs
+/exp278.toml

Cargo.lock

@@ -491,8 +491,10 @@ dependencies = [
  "satrs-mib",
  "serde",
  "serde_json",
+ "socket2",
  "strum",
  "thiserror",
+ "toml",
 ]
 
 [[package]]
@@ -520,7 +522,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d37c51ca738a55da99dc0c4a34860fd675453b8b36209178c2249bb13651284"
 dependencies = [
- "toml_edit",
+ "toml_edit 0.21.1",
 ]
 
 [[package]]
@@ -593,9 +595,9 @@ checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
 
 [[package]]
 name = "satrs"
-version = "0.2.0-rc.1"
+version = "0.2.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d6f3286d35464fdc75dc846b663aaad4a81437a50e623053b1b4d481d782cd0"
+checksum = "6aa9241e4d6cb0cc395927cfe653d8bc4a9cb6b2c27f28fec713d5e6ceb0ba23"
 dependencies = [
  "bus",
  "cobs",
@@ -693,6 +695,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb3622f419d1296904700073ea6cc23ad690adbd66f13ea683df73298736f0c1"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "smallvec"
 version = "0.6.14"
@@ -798,11 +809,26 @@ dependencies = [
  "syn 2.0.59",
 ]
 
+[[package]]
+name = "toml"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e9dd1545e8208b4a5af1aa9bbd0b4cf7e9ea08fabc5d0a5c67fcaafa17433aa3"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit 0.22.12",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "toml_edit"
@@ -812,7 +838,20 @@ checksum = "6a8534fd7f78b5405e860340ad6575217ce99f38d4d5c8f2442cb5ecb50090e1"
 dependencies = [
  "indexmap",
  "toml_datetime",
- "winnow",
+ "winnow 0.5.40",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3328d4f68a705b2a4498da1d580585d39a6510f98318a2cec3018a7ec61ddef"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow 0.6.6",
 ]
 
 [[package]]
@@ -1050,6 +1089,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winnow"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c976aaaa0e1f90dbb21e9587cdaf1d9679a1cde8875c0d6bd83ab96a208352"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.7.32"

Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 fern = "0.6"
+toml = "0.8"
 chrono = "0.4"
 log = "0.4"
 lazy_static = "1"
@@ -18,6 +19,7 @@ num_enum = "0.7"
 serde = "1"
 serde_json = "1"
 mio = "0.8"
+socket2 = "0.5"
 
 [dependencies.satrs]
 version = "0.2.0-rc.3"

README.md

@@ -2,6 +2,8 @@ ESA OPS-SAT Rust experiment
 ========
 
 This is the primary repository for the ESA OPS-SAT experiment.
+The primary repository to generate packages for ESOC can be found [here](https://egit.irs.uni-stuttgart.de/rust/ops-sat-experiment).
+You can also find some more general documentation about OPS-SAT there.
 
 ## Pre-Requisites
 
@@ -26,17 +28,3 @@ cross build
 ```sh
 cross build --release
 ```
-
-## Documentation
-
-The [wiki](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki)
-appears to be a useful source for documentation.
-
-- [OBSW documents](https://opssat1.esoc.esa.int/projects/experimenter-information/dmsf?folder_id=7)
-- [Software Integration Process](https://opssat1.esoc.esa.int/dmsf/files/34/view)
-- [SPP/TCP bridge](https://opssat1.esoc.esa.int/dmsf/files/65/view)
-- [Cross-compiling SEPP](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki/Cross-compiling_SEPP_application)
-- [TMTC infrastructure](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki/Live_TM_TC_data)
-- [Submitting an Experiment](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki/Building_and_submitting_your_application_to_ESOC)
-- [Building with Yocto and Docker](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki/Building_an_application_locally_using_Yocto_Toolchain_in_a_Docker)
-- [SPP over CAN](https://opssat1.esoc.esa.int/projects/experimenter-information/wiki/SPP_over_CAN_communication)

pytmtc/archive/tcp_server.py

@@ -0,0 +1,176 @@
+from typing import Any, Optional
+import select
+import time
+import socket
+import logging
+from threading import Thread, Event, Lock
+from collections import deque
+
+from tmtccmd.com import ComInterface
+from tmtccmd.tmtc import TelemetryListT
+
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class TcpServer(ComInterface):
+    def __init__(self, port: int):
+        self.port = port
+        self._max_num_packets_in_tc_queue = 500
+        self._max_num_packets_in_tm_queue = 500
+        self._default_timeout_secs = 0.5
+        self._server_addr = ("localhost", self.port)
+        self._tc_packet_queue = deque()
+        self._tm_packet_queue = deque()
+        self._tc_lock = Lock()
+        self._tm_lock = Lock()
+        self._kill_signal = Event()
+        self._server_socket: Optional[socket.socket] = None
+        self._server_thread = Thread(target=self._server_task, daemon=True)
+        self._connected = False
+        # self._conn_start = None
+        # self._writing_done = False
+        # self._reading_done = False
+
+    @property
+    def connected(self) -> bool:
+        return self._connected
+
+    @property
+    def id(self) -> str:
+        return "tcp_server"
+
+    def initialize(self, args: Any = 0) -> Any:
+        """Perform initializations step which can not be done in constructor or which require
+        returnvalues.
+        """
+        pass
+
+    def open(self, args: Any = 0):
+        """Opens the communication interface to allow communication.
+
+        :return:
+        """
+        if self.connected:
+            return
+        self._connected = True
+        self._server_thread.start()
+
+    def _server_task(self):
+        self._server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self._server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        # We need to check the kill signal periodically to allow closing the server.
+        self._server_socket.settimeout(self._default_timeout_secs)
+        self._server_socket.bind(self._server_addr)
+        self._server_socket.listen()
+        while True and not self._kill_signal.is_set():
+            try:
+                (conn_socket, conn_addr) = self._server_socket.accept()
+                self._handle_connection(conn_socket, conn_addr)
+                # conn_socket.close()
+                """
+                if (
+                    self._reading_done and self._writing_done
+                ) or time.time() - self.conn_start > 0.5:
+                    print("reading and writing done")
+                    break
+
+                """
+            except TimeoutError:
+                continue
+
+    def _handle_connection(self, conn_socket: socket.socket, conn_addr: Any):
+        _LOGGER.info(f"TCP client {conn_addr} connected")
+        queue_len = 0
+
+        while True:
+            with self._tc_lock:
+                queue_len = len(self._tc_packet_queue)
+            outputs = []
+            if queue_len > 0:
+                outputs.append(conn_socket)
+            (readable, writable, _) = select.select(
+                [conn_socket],
+                outputs,
+                [],
+                0.2,
+            )
+
+            if writable and writable[0]:
+                print("writeable")
+                while queue_len > 0:
+                    next_packet = bytes()
+                    with self._tc_lock:
+                        next_packet = self._tc_packet_queue.popleft()
+                    if len(next_packet) > 0:
+                        conn_socket.sendall(next_packet)
+                    queue_len -= 1
+            if readable and readable[0]:
+                print("readable")
+                while True:
+                    bytes_recvd = conn_socket.recv(4096)
+                    if len(bytes_recvd) > 0:
+                        print(f"Received bytes from TCP client: {bytes_recvd.decode()}")
+                        with self._tm_lock:
+                            self._tm_packet_queue.append(bytes_recvd)
+                    elif len(bytes_recvd) == 0:
+                        break
+                    else:
+                        print("error receiving data from TCP client")
+
+    def is_open(self) -> bool:
+        """Can be used to check whether the communication interface is open. This is useful if
+        opening a COM interface takes a longer time and is non-blocking
+        """
+        return self.connected
+
+    def close(self, args: Any = 0):
+        """Closes the ComIF and releases any held resources (for example a Communication Port).
+
+        :return:
+        """
+        self._kill_signal.set()
+        self._server_thread.join()
+        self._connected = False
+
+    def send(self, data: bytes):
+        """Send raw data.
+
+        :raises SendError: Sending failed for some reason.
+        """
+        with self._tc_lock:
+            if len(self._tc_packet_queue) >= self._max_num_packets_in_tc_queue:
+                # Remove oldest packet
+                self._tc_packet_queue.popleft()
+            self._tc_packet_queue.append(data)
+
+    def receive(self, parameters: Any = 0) -> TelemetryListT:
+        """Returns a list of received packets. The child class can use a separate thread to poll for
+        the packets or use some other mechanism and container like a deque to store packets
+        to be returned here.
+
+        :param parameters:
+        :raises ReceptionDecodeError: If the underlying COM interface uses encoding and
+            decoding and the decoding fails, this exception will be returned.
+        :return:
+        """
+
+        with self._tm_lock:
+            packet_list = []
+            while self._tm_packet_queue:
+                packet_list.append(self._tm_packet_queue.popleft())
+            return packet_list
+
+    def data_available(self, timeout: float, parameters: Any = 0) -> int:
+        """Check whether TM packets are available.
+
+        :param timeout: Can be used to block on available data if supported by the specific
+            communication interface.
+        :param parameters: Can be an arbitrary parameter.
+        :raises ReceptionDecodeError: If the underlying COM interface uses encoding and
+            decoding when determining the number of available packets, this exception can be
+            thrown on decoding errors.
+        :return: 0 if no data is available, number of packets otherwise.
+        """
+        with self._tm_lock:
+            return len(self._tm_packet_queue)

pytmtc/pyclient.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 """Example client for the sat-rs example application"""
+from __future__ import annotations
 import logging
 import sys
 import time

pytmtc/pyserver.py

@@ -0,0 +1,185 @@
+#!/usr/bin/env python3
+import socket
+import abc
+import time
+import select
+import logging
+from typing import Any
+from threading import Event, Thread
+from collections import deque
+from multiprocessing import Queue
+from spacepackets.ccsds.spacepacket import parse_space_packets, PacketId
+from spacepackets.ecss.tc import PacketType
+
+EXP_ID = 278
+EXP_APID = 1024 + EXP_ID
+EXP_PACKET_ID_TM = PacketId(PacketType.TM, True, EXP_APID)
+EXP_PACKET_ID_TC = PacketId(PacketType.TC, True, EXP_APID)
+OPSSAT_SERVER_PORT = 4096
+TMTC_SERVER_PORT = 4097
+LOG_LEVEL = logging.DEBUG
+
+
+TC_QUEUE = Queue()
+TM_QUEUE = Queue()
+KILL_SIGNAL = Event()
+
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def main():
+    logging.basicConfig(
+        format="[%(asctime)s] [%(levelname)-5s] %(message)s",
+        level=LOG_LEVEL,
+        datefmt="%Y-%m-%d %H:%M:%S",
+    )
+    print("Starting OPS-SAT ground TMTC server")
+    KILL_SIGNAL.clear()
+    ops_sat_thread = OpsSatServer()
+    ops_sat_thread.start()
+    tmtc_thread = TmtcServer()
+    tmtc_thread.start()
+    try:
+        while True:
+            time.sleep(1)
+    except KeyboardInterrupt:
+        _LOGGER.info("Shutting down server gracefully")
+        KILL_SIGNAL.set()
+    ops_sat_thread.join()
+    tmtc_thread.join()
+
+
+class BaseServer(Thread):
+    def __init__(self, log_prefix: str, port: int):
+        self.log_prefix = log_prefix
+        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        server_addr = ("0.0.0.0", port)
+        self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        self.server_socket.setblocking(False)
+        self.server_socket.settimeout(0.4)
+        self.server_socket.bind(server_addr)
+        super().__init__()
+
+    def run(self) -> None:
+        self.run_sync_version()
+
+    def run_sync_version(self) -> None:
+        self.server_socket.listen()
+        while True and not KILL_SIGNAL.is_set():
+            try:
+                (conn_socket, conn_addr) = self.server_socket.accept()
+                self.handle_connection(conn_socket, conn_addr)
+            except TimeoutError:
+                continue
+
+    def handle_connection(self, conn_socket: socket.socket, conn_addr: Any):
+        conn_socket.setblocking(False)
+        print(f"{self.log_prefix} TCP client {conn_addr} connected")
+        analysis_deque = deque()
+        while True and not KILL_SIGNAL.is_set():
+            conn_socket.settimeout(0.2)
+            try:
+                bytes_recvd = conn_socket.recv(4096)
+                if len(bytes_recvd) > 0:
+                    _LOGGER.debug(f"{self.log_prefix} RX RAW: {bytes_recvd}")
+                    analysis_deque.append(bytes_recvd)
+                elif len(bytes_recvd) == 0:
+                    self.handle_read_bytestream(analysis_deque)
+                    break
+                else:
+                    print("error receiving data from TCP client")
+            except BlockingIOError:
+                self.handle_timeout(conn_socket, analysis_deque)
+                time.sleep(0.2)
+            except TimeoutError:
+                self.handle_timeout(conn_socket, analysis_deque)
+
+    def handle_timeout(self, conn_socket: socket.socket, analysis_deque: deque):
+        if len(analysis_deque) > 0:
+            self.handle_read_bytestream(analysis_deque)
+        self.send_data_to_client(conn_socket)
+
+    def run_select_version(self) -> None:
+        while True:
+            self.server_socket.listen()
+            (conn_socket, conn_addr) = self.server_socket.accept()
+            print(f"{self.log_prefix} TCP client {conn_addr} connected")
+            analysis_deque = deque()
+            while True:
+                outputs = []
+                if self.send_data_available():
+                    outputs.append(conn_socket)
+                (readable, writable, _) = select.select([conn_socket], outputs, [], 0.2)
+                if readable and readable[0]:
+                    bytes_recvd = conn_socket.recv(4096)
+                    if len(bytes_recvd) > 0:
+                        _LOGGER.debug("received data from TCP client: {}", bytes_recvd)
+                        analysis_deque.append(bytes_recvd)
+                    elif len(bytes_recvd) == 0:
+                        self.handle_read_bytestream(analysis_deque)
+                        break
+                    else:
+                        print("error receiving data from TCP client")
+                if writable and writable[0]:
+                    self.send_data_to_client(conn_socket)
+                if not writable and not readable:
+                    if len(analysis_deque) > 0:
+                        self.handle_read_bytestream(analysis_deque)
+                    self.send_data_to_client(conn_socket)
+
+    @abc.abstractmethod
+    def handle_read_bytestream(self, analysis_deque: deque):
+        pass
+
+    @abc.abstractmethod
+    def send_data_to_client(self, conn_socket: socket.socket):
+        pass
+
+    @abc.abstractmethod
+    def send_data_available(self) -> bool:
+        pass
+
+
+class OpsSatServer(BaseServer):
+    def __init__(self):
+        super().__init__("[OPS-SAT]", OPSSAT_SERVER_PORT)
+
+    def handle_read_bytestream(self, analysis_deque: deque):
+        parsed_packets = parse_space_packets(analysis_deque, [EXP_PACKET_ID_TM])
+        for packet in parsed_packets:
+            _LOGGER.info(f"{self.log_prefix} RX TM: [{packet.hex(sep=',')}]")
+            TM_QUEUE.put(packet)
+
+    def send_data_to_client(self, conn_socket: socket.socket):
+        while not TC_QUEUE.empty():
+            next_packet = TC_QUEUE.get()
+            _LOGGER.info(f"{self.log_prefix} TX TC [{next_packet.hex(sep=',')}]")
+            conn_socket.sendall(next_packet)
+
+    def send_data_available(self) -> bool:
+        return not TC_QUEUE.empty()
+
+
+class TmtcServer(BaseServer):
+    def __init__(self):
+        super().__init__("[TMTC]", TMTC_SERVER_PORT)
+
+    def handle_read_bytestream(self, analysis_deque: deque):
+        parsed_packets = parse_space_packets(analysis_deque, [EXP_PACKET_ID_TC])
+        for packet in parsed_packets:
+            _LOGGER.info(f"{self.log_prefix} RX TM: [{packet.hex(sep=',')}]")
+            TC_QUEUE.put(packet)
+
+    def send_data_to_client(self, conn_socket: socket.socket):
+        while not TM_QUEUE.empty():
+            next_packet = TM_QUEUE.get()
+            _LOGGER.info(f"{self.log_prefix} TX TM [{next_packet.hex(sep=',')}]")
+            conn_socket.sendall(next_packet)
+
+    def send_data_available(self) -> bool:
+        return not TM_QUEUE.empty()
+
+
+if __name__ == "__main__":
+    main()

scripts/bld-deploy-remote.py

@@ -4,7 +4,6 @@ on a remote machine, e.g. a Raspberry Pi"""
 import argparse
 import os
 import sys
-import platform
 import time
 from typing import Final
 
@@ -16,10 +15,10 @@ BUILDER = "cross"
 # remote configurations by tweaking / hardcoding these parameter, which generally are constant
 # for a given board
 DEFAULT_USER_NAME: Final = "root"
-DEFAULT_ADDRESS: Final = "192.254.108.30"
+DEFAULT_ADDRESS: Final = "small_flatsat"
 DEFAULT_TOOLCHAIN: Final = "armv7-unknown-linux-gnueabihf"
 DEFAULT_APP_NAME: Final = "ops-sat-rs"
-DEFAULT_TARGET_FOLDER: Final = "/tmp"
+DEFAULT_TARGET_FOLDER: Final = "/home/exp278/"
 DEFAULT_DEBUG_PORT: Final = "1234"
 DEFAULT_GDB_APP = "gdb-multiarch"
 
@@ -140,10 +139,11 @@ def bld_deploy_run(args):
         sshpass_args = f"-f {args.sshfile}"
     elif args.sshenv:
         sshpass_args = "-e"
-    ssh_target_ident = f"{args.user}@{args.address}"
+    # ssh_target_ident = f"{args.user}@{args.address}"
+    ssh_target_ident = "small_flatsat"
     sshpass_cmd = ""
-    if platform.system() != "Windows":
-        sshpass_cmd = f"sshpass {sshpass_args}"
+    # if platform.system() != "Windows":
+    # sshpass_cmd = f"sshpass {sshpass_args}"
     dest_path = f"{args.dest}/{args.app}"
     if not args.source:
         source_path = f"{os.getcwd()}/target/{args.tc}/{build_folder}/{args.app}"

src/config.rs

@@ -8,6 +8,7 @@ use std::net::Ipv4Addr;
 use std::path::{Path, PathBuf};
 
 pub const STOP_FILE_NAME: &str = "stop-experiment";
+pub const CONFIG_FILE_NAME: &str = "exp278.toml";
 pub const HOME_FOLER_EXPERIMENT: &str = "/home/exp278";
 pub const LOG_FOLDER: &str = "logs";
 
@@ -21,7 +22,8 @@ pub const VALID_PACKET_ID_LIST: &[PacketId] = &[PacketId::new_for_tc(true, EXPER
 
 // TODO: Would be nice if this can be commanded as well..
 /// Can be enabled to print all SPP packets received from the SPP server on port 4096.
-pub const SPP_CLIENT_WIRETAPPING_RX: bool = false;
+pub const SPP_CLIENT_WIRETAPPING_RX: bool = true;
+pub const SPP_CLIENT_WIRETAPPING_TX: bool = true;
 
 #[derive(Copy, Clone, PartialEq, Eq, Debug, TryFromPrimitive, IntoPrimitive)]
 #[repr(u8)]
@@ -51,6 +53,80 @@ lazy_static! {
     };
 }
 
+pub mod cfg_file {
+    use std::{
+        fs::File,
+        io::Read,
+        path::{Path, PathBuf},
+    };
+
+    use super::{CONFIG_FILE_NAME, HOME_PATH, TCP_SPP_SERVER_PORT};
+
+    pub const SPP_CLIENT_PORT_CFG_KEY: &str = "tcp_spp_server_port";
+
+    #[derive(Debug)]
+    pub struct AppCfg {
+        pub tcp_spp_server_port: u16,
+    }
+
+    impl Default for AppCfg {
+        fn default() -> Self {
+            Self {
+                tcp_spp_server_port: TCP_SPP_SERVER_PORT,
+            }
+        }
+    }
+
+    pub fn create_app_config() -> AppCfg {
+        let mut cfg_path = HOME_PATH.clone();
+        cfg_path.push(CONFIG_FILE_NAME);
+        let cfg_path_home = cfg_path.as_path();
+        let relevant_path = if Path::new(CONFIG_FILE_NAME).exists() {
+            Some(PathBuf::from(Path::new(CONFIG_FILE_NAME)))
+        } else if cfg_path_home.exists() {
+            Some(PathBuf::from(cfg_path_home))
+        } else {
+            None
+        };
+
+        let mut app_cfg = AppCfg::default();
+        if relevant_path.is_none() {
+            log::warn!("No config file found, using default values");
+            return app_cfg;
+        }
+        let relevant_path = relevant_path.unwrap();
+        match File::open(relevant_path.as_path()) {
+            Ok(mut file) => {
+                let mut toml_str = String::new();
+                match file.read_to_string(&mut toml_str) {
+                    Ok(_size) => match toml_str.parse::<toml::Table>() {
+                        Ok(table) => {
+                            handle_config_file_table(table, &mut app_cfg);
+                        }
+                        Err(e) => log::error!("error parsing TOML config file: {e}"),
+                    },
+                    Err(e) => log::error!("error reading TOML config file: {e}"),
+                }
+            }
+            Err(e) => log::error!("error opening TOML config file: {e}"),
+        }
+        app_cfg
+    }
+
+    #[allow(clippy::collapsible_match)]
+    pub fn handle_config_file_table(table: toml::Table, app_cfg: &mut AppCfg) {
+        if let Some(value) = table.get(SPP_CLIENT_PORT_CFG_KEY) {
+            if let toml::Value::Integer(port) = value {
+                if *port < 0 {
+                    log::warn!("invalid port value, is negative");
+                } else {
+                    app_cfg.tcp_spp_server_port = *port as u16
+                }
+            }
+        }
+    }
+}
+
 pub mod tmtc_err {
     use super::*;
     use satrs::res_code::ResultU16;
@@ -140,11 +216,14 @@ pub mod components {
 }
 
 pub mod tasks {
+    use std::time::Duration;
+
     pub const FREQ_MS_UDP_TMTC: u64 = 200;
     pub const FREQ_MS_EVENT_HANDLING: u64 = 400;
     pub const FREQ_MS_AOCS: u64 = 500;
     pub const FREQ_MS_PUS_STACK: u64 = 200;
     pub const FREQ_MS_CTRL: u64 = 400;
 
-    pub const STOP_CHECK_FREQUENCY: u64 = 400;
+    pub const STOP_CHECK_FREQUENCY_MS: u64 = 400;
+    pub const STOP_CHECK_FREQUENCY: Duration = Duration::from_millis(STOP_CHECK_FREQUENCY_MS);
 }

src/handlers/camera.rs

@@ -24,7 +24,6 @@
 ///  v Y
 ///
 /// see also https://opssat1.esoc.esa.int/dmsf/files/6/view
-
 use crate::requests::CompositeRequest;
 use derive_new::new;
 use log::debug;
@@ -154,10 +153,20 @@ impl IMS100BatchHandler {
                         self.handle_hk_request(&msg.requestor_info, hk_request);
                     }
                     CompositeRequest::Action(action_request) => {
-                        self.handle_action_request(&msg.requestor_info, action_request);
+                        if let Err(e) =
+                            self.handle_action_request(&msg.requestor_info, action_request)
+                        {
+                            log::warn!("camera action request IO error: {e}");
+                        }
+                    }
+                },
+                Err(e) => match e {
+                    mpsc::TryRecvError::Empty => break,
+                    mpsc::TryRecvError::Disconnected => {
+                        log::warn!("composite request receiver disconnected");
+                        break;
                     }
                 },
-                Err(_) => {}
             }
         }
     }
@@ -236,6 +245,7 @@ impl IMS100BatchHandler {
         Ok(())
     }
 
+    #[allow(clippy::too_many_arguments)]
     pub fn take_picture_from_str(
         &mut self,
         R: &str,
@@ -281,4 +291,4 @@ mod tests {
     fn test_crc() {
         // TODO
     }
-}
+}

src/interface/tcp_server.rs

@@ -1,7 +1,6 @@
 use std::{
     collections::VecDeque,
     sync::{atomic::AtomicBool, mpsc, Arc, Mutex},
-    time::Duration,
 };
 
 use log::{info, warn};
@@ -113,9 +112,7 @@ impl TcpTask {
     }
 
     pub fn periodic_operation(&mut self) {
-        let result = self
-            .0
-            .handle_all_connections(Some(Duration::from_millis(STOP_CHECK_FREQUENCY)));
+        let result = self.0.handle_all_connections(Some(STOP_CHECK_FREQUENCY));
         match result {
             Ok(_conn_result) => (),
             Err(e) => {

src/interface/tcp_spp_client.rs

@@ -1,12 +1,12 @@
-use std::io::{self, Read, Write};
+use std::io::{self, Read};
+use std::net::TcpStream as StdTcpStream;
 use std::net::{IpAddr, Ipv4Addr, SocketAddr};
 use std::sync::mpsc;
-use std::time::Duration;
 
-use mio::net::TcpStream;
+use mio::net::TcpStream as MioTcpStream;
 use mio::{Events, Interest, Poll, Token};
 use ops_sat_rs::config::tasks::STOP_CHECK_FREQUENCY;
-use ops_sat_rs::config::{SPP_CLIENT_WIRETAPPING_RX, TCP_SPP_SERVER_PORT};
+use ops_sat_rs::config::{SPP_CLIENT_WIRETAPPING_RX, SPP_CLIENT_WIRETAPPING_TX};
 use satrs::encoding::ccsds::parse_buffer_for_ccsds_space_packets;
 use satrs::queue::GenericSendError;
 use satrs::spacepackets::PacketId;
@@ -17,19 +17,16 @@ use thiserror::Error;
 use super::{SimpleSpValidator, TcpComponent};
 
 #[derive(Debug, Error)]
-pub enum PacketForwardingError {
+pub enum ClientError {
     #[error("send error: {0}")]
     Send(#[from] GenericSendError),
     #[error("io error: {0}")]
     Io(#[from] io::Error),
 }
 
-pub struct TcpSppClient {
+#[allow(dead_code)]
+pub struct TcpSppClientCommon {
     id: ComponentId,
-    poll: Poll,
-    events: Events,
-    // Optional to allow periodic reconnection attempts on the TCP server.
-    client: Option<TcpStream>,
     read_buf: [u8; 4096],
     tm_tcp_client_rx: mpsc::Receiver<PacketAsVec>,
     server_addr: SocketAddr,
@@ -37,143 +34,13 @@ pub struct TcpSppClient {
     validator: SimpleSpValidator,
 }
 
-impl TcpSppClient {
-    pub fn new(
-        id: ComponentId,
-        tc_source_tx: mpsc::Sender<PacketAsVec>,
-        tm_tcp_client_rx: mpsc::Receiver<PacketAsVec>,
-        valid_ids: &'static [PacketId],
-    ) -> io::Result<Self> {
-        let mut poll = Poll::new()?;
-        let events = Events::with_capacity(128);
-        let server_addr =
-            SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 1, 1)), TCP_SPP_SERVER_PORT);
-        let client = Self::attempt_connection(&mut poll, &server_addr);
-        if client.is_err() {
-            log::warn!(
-                "connection to TCP server {} failed: {}",
-                server_addr,
-                client.unwrap_err()
-            );
-            return Ok(Self {
-                id,
-                poll,
-                events,
-                client: None,
-                read_buf: [0; 4096],
-                server_addr,
-                tm_tcp_client_rx,
-                tc_source_tx,
-                validator: SimpleSpValidator::new(TcpComponent::Client, valid_ids.to_vec()),
-            });
-        }
-        Ok(Self {
-            id,
-            poll,
-            events,
-            client: Some(client.unwrap()),
-            read_buf: [0; 4096],
-            server_addr,
-            tm_tcp_client_rx,
-            tc_source_tx,
-            validator: SimpleSpValidator::new(TcpComponent::Client, valid_ids.to_vec()),
-        })
-    }
-
-    pub fn attempt_connection(poll: &mut Poll, server_addr: &SocketAddr) -> io::Result<TcpStream> {
-        let mut client = TcpStream::connect(*server_addr)?;
-        poll.registry().register(
-            &mut client,
-            Token(0),
-            Interest::READABLE | Interest::WRITABLE,
-        )?;
-        Ok(client)
-    }
-
-    pub fn periodic_operation(&mut self) -> Result<(), PacketForwardingError> {
-        if self.client.is_some() {
-            return self.perform_regular_operation();
-        } else {
-            let client_result = Self::attempt_connection(&mut self.poll, &self.server_addr);
-            match client_result {
-                Ok(client) => {
-                    self.client = Some(client);
-                    self.perform_regular_operation()?;
-                }
-                Err(ref e) => {
-                    log::warn!(
-                        "connection to TCP server {} failed: {}",
-                        self.server_addr,
-                        e
-                    );
-                }
-            }
-        }
-        Ok(())
-    }
-
-    pub fn perform_regular_operation(&mut self) -> Result<(), PacketForwardingError> {
-        self.poll.poll(
-            &mut self.events,
-            Some(Duration::from_millis(STOP_CHECK_FREQUENCY)),
-        )?;
-        let events: Vec<mio::event::Event> = self.events.iter().cloned().collect();
-        for event in events {
-            if event.token() == Token(0) {
-                if event.is_readable() {
-                    self.read_from_server()?;
-                }
-                if event.is_writable() {
-                    self.write_to_server()?;
-                }
-            }
-        }
-        Ok(())
-    }
-
-    pub fn read_from_server(&mut self) -> Result<(), PacketForwardingError> {
-        let client = self
-            .client
-            .as_mut()
-            .expect("TCP stream invalid when it should not be");
-        match client.read(&mut self.read_buf) {
-            Ok(0) => return Err(io::Error::from(io::ErrorKind::BrokenPipe).into()),
-            Ok(read_bytes) => self.handle_read_bytstream(read_bytes)?,
-            Err(e) => return Err(e.into()),
-        }
-        Ok(())
-    }
-
-    pub fn write_to_server(&mut self) -> io::Result<()> {
-        let client = self
-            .client
-            .as_mut()
-            .expect("TCP stream invalid when it should not be");
-        loop {
-            match self.tm_tcp_client_rx.try_recv() {
-                Ok(tm) => {
-                    client.write_all(&tm.packet)?;
-                }
-                Err(e) => match e {
-                    mpsc::TryRecvError::Empty => break,
-                    mpsc::TryRecvError::Disconnected => {
-                        log::error!("TM sender to TCP client has disconnected");
-                        break;
-                    }
-                },
-            }
-        }
-        Ok(())
-    }
-
-    pub fn handle_read_bytstream(
-        &mut self,
-        read_bytes: usize,
-    ) -> Result<(), PacketForwardingError> {
+#[allow(dead_code)]
+impl TcpSppClientCommon {
+    pub fn handle_read_bytstream(&mut self, read_bytes: usize) -> Result<(), ClientError> {
         let mut dummy = 0;
         if SPP_CLIENT_WIRETAPPING_RX {
             log::debug!(
-                "received {} bytes on TCP client: {:x?}",
+                "SPP TCP RX {} bytes: {:x?}",
                 read_bytes,
                 &self.read_buf[..read_bytes]
             );
@@ -188,4 +55,243 @@ impl TcpSppClient {
         )?;
         Ok(())
     }
+
+    pub fn write_to_server(&mut self, client: &mut impl io::Write) -> io::Result<()> {
+        loop {
+            match self.tm_tcp_client_rx.try_recv() {
+                Ok(tm) => {
+                    if SPP_CLIENT_WIRETAPPING_TX {
+                        log::debug!(
+                            "SPP TCP TX {}: {:x?}",
+                            tm.packet.len(),
+                            tm.packet.as_slice()
+                        );
+                    }
+                    client.write_all(&tm.packet)?;
+                }
+                Err(e) => match e {
+                    mpsc::TryRecvError::Empty => break,
+                    mpsc::TryRecvError::Disconnected => {
+                        log::error!("TM sender to TCP client has disconnected");
+                        break;
+                    }
+                },
+            }
+        }
+        Ok(())
+    }
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub enum ConnectionStatus {
+    Unknown,
+    Connected,
+    LostConnection,
+    TryingReconnect,
+}
+
+#[allow(dead_code)]
+pub struct TcpSppClientMio {
+    common: TcpSppClientCommon,
+    poll: Poll,
+    events: Events,
+    // Optional to allow periodic reconnection attempts on the TCP server.
+    client: Option<MioTcpStream>,
+    connection: ConnectionStatus,
+}
+
+#[allow(dead_code)]
+impl TcpSppClientMio {
+    pub fn new(
+        id: ComponentId,
+        tc_source_tx: mpsc::Sender<PacketAsVec>,
+        tm_tcp_client_rx: mpsc::Receiver<PacketAsVec>,
+        valid_ids: &'static [PacketId],
+        port: u16,
+    ) -> io::Result<Self> {
+        let poll = Poll::new()?;
+        let events = Events::with_capacity(128);
+        let mut client = Self {
+            common: TcpSppClientCommon {
+                id,
+                read_buf: [0; 4096],
+                tm_tcp_client_rx,
+                server_addr: SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), port),
+                tc_source_tx,
+                validator: SimpleSpValidator::new(TcpComponent::Client, valid_ids.to_vec()),
+            },
+            poll,
+            events,
+            client: None,
+            connection: ConnectionStatus::Unknown,
+        };
+        client.connect()?;
+        Ok(client)
+    }
+
+    pub fn connect(&mut self) -> io::Result<()> {
+        let mut client = MioTcpStream::connect(self.common.server_addr)?;
+
+        self.poll.registry().register(
+            &mut client,
+            Token(0),
+            Interest::READABLE | Interest::WRITABLE,
+        )?;
+        self.client = Some(client);
+        self.connection = ConnectionStatus::TryingReconnect;
+        Ok(())
+    }
+
+    pub fn operation(&mut self) -> Result<(), ClientError> {
+        match self.connection {
+            ConnectionStatus::TryingReconnect | ConnectionStatus::Unknown => {
+                self.check_conn_status()?
+            }
+            ConnectionStatus::Connected => {
+                self.check_conn_status()?;
+                self.poll
+                    .poll(&mut self.events, Some(STOP_CHECK_FREQUENCY))?;
+                let events: Vec<mio::event::Event> = self.events.iter().cloned().collect();
+                for event in events {
+                    if event.token() == Token(0) {
+                        if event.is_readable() {
+                            log::warn!("TCP client is readable");
+                            self.read_from_server()?;
+                        }
+                        if event.is_writable() {
+                            log::warn!("TCP client is writable");
+                            self.common.write_to_server(self.client.as_mut().unwrap())?;
+                        }
+                    }
+                }
+                return Ok(());
+            }
+            ConnectionStatus::LostConnection => self.connect()?,
+        };
+        std::thread::sleep(STOP_CHECK_FREQUENCY);
+        Ok(())
+    }
+
+    pub fn read_from_server(&mut self) -> Result<(), ClientError> {
+        match self
+            .client
+            .as_mut()
+            .unwrap()
+            .read(&mut self.common.read_buf)
+        {
+            Ok(0) => (),
+            Ok(read_bytes) => self.common.handle_read_bytstream(read_bytes)?,
+            Err(e) => return Err(e.into()),
+        }
+        Ok(())
+    }
+
+    pub fn check_conn_status(&mut self) -> io::Result<()> {
+        match self.client.as_mut().unwrap().peer_addr() {
+            Ok(_) => {
+                if self.connection == ConnectionStatus::Unknown
+                    || self.connection == ConnectionStatus::TryingReconnect
+                {
+                    self.connection = ConnectionStatus::Connected;
+                }
+                Ok(())
+            }
+            Err(e) => {
+                if e.kind() == io::ErrorKind::NotConnected {
+                    log::warn!("lost connection, or do not have one");
+                    self.connection = ConnectionStatus::LostConnection;
+                    return Ok(());
+                }
+                Err(e)
+            }
+        }
+    }
+}
+
+pub struct TcpSppClientStd {
+    common: TcpSppClientCommon,
+    // Optional to allow periodic reconnection attempts on the TCP server.
+    stream: Option<StdTcpStream>,
+}
+
+impl TcpSppClientStd {
+    pub fn new(
+        id: ComponentId,
+        tc_source_tx: mpsc::Sender<PacketAsVec>,
+        tm_tcp_client_rx: mpsc::Receiver<PacketAsVec>,
+        valid_ids: &'static [PacketId],
+        port: u16,
+    ) -> io::Result<Self> {
+        let server_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), port);
+        let client = match StdTcpStream::connect(server_addr) {
+            Ok(stream) => {
+                stream.set_read_timeout(Some(STOP_CHECK_FREQUENCY))?;
+                Some(stream)
+            }
+            Err(e) => {
+                log::warn!("error connecting to server: {}", e);
+                None
+            }
+        };
+        Ok(Self {
+            common: TcpSppClientCommon {
+                id,
+                read_buf: [0; 4096],
+                tm_tcp_client_rx,
+                server_addr,
+                tc_source_tx,
+                validator: SimpleSpValidator::new(TcpComponent::Client, valid_ids.to_vec()),
+            },
+            stream: client,
+        })
+    }
+
+    pub fn attempt_connect(&mut self, log_error: bool) -> io::Result<bool> {
+        Ok(match StdTcpStream::connect(self.common.server_addr) {
+            Ok(stream) => {
+                stream.set_read_timeout(Some(STOP_CHECK_FREQUENCY))?;
+                self.stream = Some(stream);
+                true
+            }
+            Err(e) => {
+                if log_error {
+                    log::warn!("error connecting to server: {}", e);
+                }
+                false
+            }
+        })
+    }
+
+    pub fn operation(&mut self) -> Result<(), ClientError> {
+        if let Some(client) = &mut self.stream {
+            match client.read(&mut self.common.read_buf) {
+                // Not sure if this can happen or this is actually an error condition..
+                Ok(0) => {
+                    log::info!("server closed connection");
+                    self.stream = None;
+                }
+                Ok(read_bytes) => self.common.handle_read_bytstream(read_bytes)?,
+                Err(e) => {
+                    if e.kind() == io::ErrorKind::WouldBlock || e.kind() == io::ErrorKind::TimedOut
+                    {
+                        self.common.write_to_server(client)?;
+                        return Ok(());
+                    }
+                    log::warn!("server error: {e:?}");
+                    if e.kind() == io::ErrorKind::ConnectionReset {
+                        self.stream = None;
+                    }
+                    return Err(e.into());
+                }
+            }
+        } else {
+            if self.attempt_connect(false)? {
+                log::info!("reconnected to server succesfully");
+                return self.operation();
+            }
+            std::thread::sleep(STOP_CHECK_FREQUENCY);
+        }
+
+        Ok(())
+    }
 }

src/main.rs

@@ -7,6 +7,7 @@ use std::{
 
 use log::info;
 use ops_sat_rs::config::{
+    cfg_file::create_app_config,
     components::{CONTROLLER_ID, TCP_SERVER, TCP_SPP_CLIENT, UDP_SERVER},
     tasks::{FREQ_MS_CTRL, FREQ_MS_PUS_STACK},
     VALID_PACKET_ID_LIST,
@@ -14,7 +15,7 @@ use ops_sat_rs::config::{
 use ops_sat_rs::config::{tasks::FREQ_MS_UDP_TMTC, OBSW_SERVER_ADDR, SERVER_PORT};
 use satrs::hal::std::{tcp_server::ServerConfig, udp_server::UdpTcServer};
 
-use crate::tmtc::tc_source::TcSourceTaskDynamic;
+use crate::pus::{PusTcDistributor, PusTcMpscRouter};
 use crate::tmtc::tm_sink::TmFunnelDynamic;
 use crate::{controller::ExperimentController, pus::test::create_test_service};
 use crate::{
@@ -22,10 +23,7 @@ use crate::{
     interface::udp_server::{DynamicUdpTmHandler, UdpTmtcServer},
     logger::setup_logger,
 };
-use crate::{
-    interface::tcp_spp_client::TcpSppClient,
-    pus::{PusTcDistributor, PusTcMpscRouter},
-};
+use crate::{interface::tcp_spp_client::TcpSppClientStd, tmtc::tc_source::TcSourceTaskDynamic};
 use crate::{
     pus::{action::create_action_service, stack::PusStack},
     requests::GenericRequestRouter,
@@ -43,6 +41,9 @@ fn main() {
     setup_logger().expect("setting up logging with fern failed");
     println!("OPS-SAT Rust Experiment OBSW");
 
+    let app_cfg = create_app_config();
+    println!("App Configuration: {:?}", app_cfg);
+
     let stop_signal = Arc::new(AtomicBool::new(false));
 
     let (tc_source_tx, tc_source_rx) = mpsc::channel();
@@ -165,11 +166,12 @@ fn main() {
         stop_signal.clone(),
     );
 
-    let mut tcp_spp_client = TcpSppClient::new(
+    let mut tcp_spp_client = TcpSppClientStd::new(
         TCP_SPP_CLIENT.id(),
         tc_source_tx,
         tm_tcp_client_rx,
         VALID_PACKET_ID_LIST,
+        app_cfg.tcp_spp_server_port,
     )
     .expect("creating TCP SPP client failed");
 
@@ -228,7 +230,10 @@ fn main() {
         .spawn(move || {
             info!("Running TCP SPP client");
             loop {
-                let _result = tcp_spp_client.periodic_operation();
+                let result = tcp_spp_client.operation();
+                if let Err(e) = result {
+                    log::error!("TCP SPP client error: {}", e);
+                }
                 if tcp_client_stop_signal.load(std::sync::atomic::Ordering::Relaxed) {
                     break;
                 }

src/pus/test.rs

@@ -42,7 +42,6 @@ pub struct TestCustomServiceWrapper {
         EcssTcInVecConverter,
         VerificationReporter,
     >,
-    // pub test_srv_event_sender: mpsc::Sender<EventMessageU32>,
 }
 
 impl TestCustomServiceWrapper {

src/tmtc/tm_sink.rs

@@ -1,6 +1,6 @@
 use std::sync::atomic::AtomicBool;
 use std::sync::Arc;
-use std::{collections::HashMap, sync::mpsc, time::Duration};
+use std::{collections::HashMap, sync::mpsc};
 
 use log::info;
 use ops_sat_rs::config::tasks::STOP_CHECK_FREQUENCY;
@@ -101,10 +101,7 @@ impl TmFunnelDynamic {
 
     pub fn operation(&mut self) {
         loop {
-            match self
-                .tm_funnel_rx
-                .recv_timeout(Duration::from_millis(STOP_CHECK_FREQUENCY))
-            {
+            match self.tm_funnel_rx.recv_timeout(STOP_CHECK_FREQUENCY) {
                 Ok(mut tm) => {
                     // Read the TM, set sequence counter and message counter, and finally update
                     // the CRC.

templates/exp278.toml

@@ -0,0 +1,5 @@
+# This configuration file should either be inside the (experiment) home folder or in the current
+# folder the application is run from.
+
+# On the small flatsat, change this to 9999.
+tcp_spp_server_port = 4096