diff --git a/daqingest/Cargo.toml b/daqingest/Cargo.toml
index a788b1a..c8f53a9 100644
--- a/daqingest/Cargo.toml
+++ b/daqingest/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "daqingest"
-version = "0.2.3"
+version = "0.2.4-aa.0"
 authors = ["Dominik Werder <dominik.werder@gmail.com>"]
 edition = "2021"
 
diff --git a/netfetch/src/ca.rs b/netfetch/src/ca.rs
index 93cc05f..0dfed89 100644
--- a/netfetch/src/ca.rs
+++ b/netfetch/src/ca.rs
@@ -1,5 +1,6 @@
 pub mod beacons;
 pub mod conn;
+pub mod conn2;
 pub mod connset;
 pub mod connset_input_merge;
 pub mod finder;
diff --git a/netfetch/src/ca/conn.rs b/netfetch/src/ca/conn.rs
index bb2e344..7983c80 100644
--- a/netfetch/src/ca/conn.rs
+++ b/netfetch/src/ca/conn.rs
@@ -84,13 +84,14 @@ use std::time::SystemTime;
 use taskrun::tokio;
 use tokio::net::TcpStream;
 
-const CONNECTING_TIMEOUT: Duration = Duration::from_millis(6000);
-const IOC_PING_IVL: Duration = Duration::from_millis(1000 * 80);
+const CONNECTING_TIMEOUT: Duration = Duration::from_millis(1000 * 6);
+const CHANNEL_STATUS_EMIT_IVL: Duration = Duration::from_millis(1000 * 8);
+const IOC_PING_IVL: Duration = Duration::from_millis(1000 * 120);
+const MONITOR_POLL_TIMEOUT: Duration = Duration::from_millis(1000 * 6);
+const TIMEOUT_CHANNEL_CLOSING: Duration = Duration::from_millis(1000 * 8);
+const TIMEOUT_PONG_WAIT: Duration = Duration::from_millis(1000 * 10);
+const READ_CHANNEL_VALUE_STATUS_EMIT_QUIET_MIN: Duration = Duration::from_millis(1000 * 120);
 const DO_RATE_CHECK: bool = false;
-const MONITOR_POLL_TIMEOUT: Duration = Duration::from_millis(6000);
-const TIMEOUT_CHANNEL_CLOSING: Duration = Duration::from_millis(8000);
-const TIMEOUT_PONG_WAIT: Duration = Duration::from_millis(10000);
-const READ_CHANNEL_VALUE_STATUS_EMIT_QUIET_MIN: Duration = Duration::from_millis(120000);
 
 #[allow(unused)]
 macro_rules! trace2 {
@@ -1055,7 +1056,6 @@ impl CaConn {
         stats: Arc<CaConnStats>,
         ca_proto_stats: Arc<CaProtoStats>,
     ) -> Self {
-        let _ = channel_info_query_tx;
         let tsnow = Instant::now();
         let (cq_tx, cq_rx) = async_channel::bounded(32);
         let mut rng = stats::xoshiro_from_time();
@@ -1063,7 +1063,7 @@ impl CaConn {
             opts,
             backend,
             state: CaConnState::Unconnected(tsnow),
-            ticker: Self::new_self_ticker(),
+            ticker: Self::new_self_ticker(&mut rng),
             proto: None,
             cid_store: CidStore::new_from_time(),
             subid_store: SubidStore::new_from_time(),
@@ -1105,19 +1105,28 @@ impl CaConn {
     }
 
     fn ioc_ping_ivl_rng(rng: &mut Xoshiro128PlusPlus) -> Duration {
-        IOC_PING_IVL * 100 / (70 + (rng.next_u32() % 60))
+        let b = IOC_PING_IVL;
+        b + b / 128 * (rng.next_u32() & 0x1f)
     }
 
     fn channel_status_emit_ivl(rng: &mut Xoshiro128PlusPlus) -> Duration {
-        Duration::from_millis(8000 + (rng.next_u32() & 0xfff) as u64)
+        let b = CHANNEL_STATUS_EMIT_IVL;
+        b + b / 128 * (rng.next_u32() & 0x1f)
     }
 
     fn silence_read_next_ivl_rng(rng: &mut Xoshiro128PlusPlus) -> Duration {
         Duration::from_millis(1000 * 300 + (rng.next_u32() & 0x3fff) as u64)
     }
 
-    fn new_self_ticker() -> Pin<Box<tokio::time::Sleep>> {
-        Box::pin(tokio::time::sleep(Duration::from_millis(1500)))
+    fn recv_value_status_emit_ivl_rng(rng: &mut Xoshiro128PlusPlus) -> Duration {
+        let b = READ_CHANNEL_VALUE_STATUS_EMIT_QUIET_MIN;
+        b + b / 128 * (rng.next_u32() & 0x1f)
+    }
+
+    fn new_self_ticker(rng: &mut Xoshiro128PlusPlus) -> Pin<Box<tokio::time::Sleep>> {
+        let b = Duration::from_millis(1500);
+        let dur = b + b / 128 * (rng.next_u32() & 0x1f);
+        Box::pin(tokio::time::sleep(dur))
     }
 
     fn proto(&mut self) -> Option<&mut CaProto> {
@@ -1700,6 +1709,7 @@ impl CaConn {
                             tsnow,
                             stnow,
                             stats,
+                            &mut self.rng,
                         )?;
                     }
                     ReadingState::Monitoring(st2) => {
@@ -1729,6 +1739,7 @@ impl CaConn {
                             tsnow,
                             stnow,
                             stats,
+                            &mut self.rng,
                         )?;
                     }
                     ReadingState::StopMonitoringForPolling(st2) => {
@@ -1882,7 +1893,16 @@ impl CaConn {
                                     st2.tick = PollTickState::Idle(tsnow);
                                     let iqdqs = &mut self.iqdqs;
                                     let stats = self.stats.as_ref();
-                                    Self::read_notify_res_for_write(ev, ch_wrst, st, iqdqs, stnow, tsnow, stats)?;
+                                    Self::read_notify_res_for_write(
+                                        ev,
+                                        ch_wrst,
+                                        st,
+                                        iqdqs,
+                                        stnow,
+                                        tsnow,
+                                        stats,
+                                        &mut self.rng,
+                                    )?;
                                 }
                             },
                             ReadingState::EnableMonitoring(_) => {
@@ -1926,7 +1946,16 @@ impl CaConn {
                                     // More involved check would be to raise a flag, wait for the expected monitor for some
                                     // timeout, and if we get nothing error out.
                                     if false {
-                                        Self::read_notify_res_for_write(ev, ch_wrst, st, iqdqs, stnow, tsnow, stats)?;
+                                        Self::read_notify_res_for_write(
+                                            ev,
+                                            ch_wrst,
+                                            st,
+                                            iqdqs,
+                                            stnow,
+                                            tsnow,
+                                            stats,
+                                            &mut self.rng,
+                                        )?;
                                     }
                                 }
                             },
@@ -1956,6 +1985,7 @@ impl CaConn {
         stnow: SystemTime,
         tsnow: Instant,
         stats: &CaConnStats,
+        rng: &mut Xoshiro128PlusPlus,
     ) -> Result<(), Error> {
         let crst = &mut st.channel;
         let writer = &mut st.writer;
@@ -1971,6 +2001,7 @@ impl CaConn {
             tsnow,
             stnow,
             stats,
+            rng,
         )?;
         Ok(())
     }
@@ -1986,6 +2017,7 @@ impl CaConn {
         tsnow: Instant,
         stnow: SystemTime,
         stats: &CaConnStats,
+        rng: &mut Xoshiro128PlusPlus,
     ) -> Result<(), Error> {
         {
             use proto::CaMetaValue::*;
@@ -2009,7 +2041,7 @@ impl CaConn {
         crst.acc_recv.push_written(payload_len);
         // TODO should attach these counters already to Writable state.
         if crst.ts_recv_value_status_emit_next <= tsnow {
-            crst.ts_recv_value_status_emit_next = tsnow + READ_CHANNEL_VALUE_STATUS_EMIT_QUIET_MIN;
+            crst.ts_recv_value_status_emit_next = tsnow + Self::recv_value_status_emit_ivl_rng(rng);
             let item = ChannelStatusItem {
                 ts: stnow,
                 cssid: crst.cssid,
@@ -2495,16 +2527,6 @@ impl CaConn {
                                     warn!("CaConn sees: {msg:?}");
                                 }
                             }
-                            #[cfg(DISABLED)]
-                            CaMsgTy::IssueDataCount(hi, stat, sev, secs, nanos) => {
-                                let cid = *self.cid_by_subid.get(&hi.param2()).unwrap();
-                                let name = self.name_by_cid.get(&cid).unwrap();
-                                debug!("ca large count for  {name}  {hi:?}  {stat}  {sev}  {secs}  {nanos}");
-                                self.weird_count += 1;
-                                if self.weird_count > 200 {
-                                    std::process::exit(13);
-                                }
-                            }
                             CaMsgTy::VersionRes(x) => {
                                 debug!("VersionRes({x})");
                                 self.weird_count += 1;
@@ -2825,7 +2847,7 @@ impl CaConn {
         // debug!("tick  CaConn  {}", self.remote_addr_dbg);
         let tsnow = Instant::now();
         if !self.is_shutdown() {
-            self.ticker = Self::new_self_ticker();
+            self.ticker = Self::new_self_ticker(&mut self.rng);
             let _ = self.ticker.poll_unpin(cx);
             // cx.waker().wake_by_ref();
         }
diff --git a/netfetch/src/ca/conn2.rs b/netfetch/src/ca/conn2.rs
new file mode 100644
index 0000000..5a9bd9b
--- /dev/null
+++ b/netfetch/src/ca/conn2.rs
@@ -0,0 +1,5 @@
+mod channel;
+mod channelstateinfo;
+mod conn;
+mod conncmd;
+mod connevent;
diff --git a/netfetch/src/ca/conn2/channel.rs b/netfetch/src/ca/conn2/channel.rs
new file mode 100644
index 0000000..c9c73c2
--- /dev/null
+++ b/netfetch/src/ca/conn2/channel.rs
@@ -0,0 +1,3 @@
+trait Channel {}
+
+struct ChannelAny {}
diff --git a/netfetch/src/ca/conn2/channelstateinfo.rs b/netfetch/src/ca/conn2/channelstateinfo.rs
new file mode 100644
index 0000000..8650593
--- /dev/null
+++ b/netfetch/src/ca/conn2/channelstateinfo.rs
@@ -0,0 +1,93 @@
+use crate::conf::ChannelConfig;
+use netpod::ScalarType;
+use netpod::Shape;
+use serde::Serialize;
+use series::ChannelStatusSeriesId;
+use series::SeriesId;
+use std::net::SocketAddrV4;
+use std::time::Instant;
+use std::time::SystemTime;
+
+#[derive(Clone, Debug, Serialize)]
+pub enum ChannelConnectedInfo {
+    Disconnected,
+    Connecting,
+    Connected,
+    Error,
+}
+
+#[derive(Clone, Debug, Serialize)]
+pub struct ChannelStateInfo {
+    pub stnow: SystemTime,
+    pub cssid: ChannelStatusSeriesId,
+    pub addr: SocketAddrV4,
+    pub series: Option<SeriesId>,
+    pub channel_connected_info: ChannelConnectedInfo,
+    pub ping_last: Option<SystemTime>,
+    pub pong_last: Option<SystemTime>,
+    pub scalar_type: Option<ScalarType>,
+    pub shape: Option<Shape>,
+    // NOTE: this solution can yield to the same Instant serialize to different string representations.
+    // #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(with = "ser_instant")]
+    pub ts_created: Option<Instant>,
+    // #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(with = "ser_instant")]
+    pub ts_event_last: Option<Instant>,
+    pub recv_count: Option<u64>,
+    pub recv_bytes: Option<u64>,
+    // #[serde(skip_serializing_if = "Option::is_none")]
+    pub item_recv_ivl_ema: Option<f32>,
+    pub interest_score: f32,
+    pub conf: ChannelConfig,
+    pub recv_last: SystemTime,
+    pub write_st_last: SystemTime,
+    pub write_mt_last: SystemTime,
+    pub write_lt_last: SystemTime,
+    pub status_emit_count: u64,
+}
+
+mod ser_instant {
+    use super::*;
+    use netpod::DATETIME_FMT_3MS;
+    use serde::Deserializer;
+    use serde::Serializer;
+
+    pub fn serialize<S>(val: &Option<Instant>, ser: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match val {
+            Some(val) => {
+                let now = chrono::Utc::now();
+                let tsnow = Instant::now();
+                let t1 = if tsnow >= *val {
+                    let dur = tsnow.duration_since(*val);
+                    let dur2 = chrono::Duration::try_seconds(dur.as_secs() as i64)
+                        .unwrap()
+                        .checked_add(&chrono::Duration::microseconds(dur.subsec_micros() as i64))
+                        .unwrap();
+                    now.checked_sub_signed(dur2).unwrap()
+                } else {
+                    let dur = (*val).duration_since(tsnow);
+                    let dur2 = chrono::Duration::try_seconds(dur.as_secs() as i64)
+                        .unwrap()
+                        .checked_sub(&chrono::Duration::microseconds(dur.subsec_micros() as i64))
+                        .unwrap();
+                    now.checked_add_signed(dur2).unwrap()
+                };
+                let s = t1.format(DATETIME_FMT_3MS).to_string();
+                ser.serialize_str(&s)
+            }
+            None => ser.serialize_none(),
+        }
+    }
+
+    pub fn deserialize<'de, D>(_de: D) -> Result<Option<Instant>, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let e = serde::de::Error::custom("todo deserialize for ser_instant");
+        Err(e)
+    }
+}
diff --git a/netfetch/src/ca/conn2/conn.rs b/netfetch/src/ca/conn2/conn.rs
new file mode 100644
index 0000000..378da86
--- /dev/null
+++ b/netfetch/src/ca/conn2/conn.rs
@@ -0,0 +1,83 @@
+use super::conncmd::ConnCommand;
+use super::connevent::CaConnEvent;
+use super::connevent::EndOfStreamReason;
+use crate::ca::conn::CaConnOpts;
+use crate::ca::proto::CaProto;
+use async_channel::Sender;
+use dbpg::seriesbychannel::ChannelInfoQuery;
+use futures_util::Future;
+use futures_util::FutureExt;
+use futures_util::Stream;
+use futures_util::StreamExt;
+use hashbrown::HashMap;
+use log::*;
+use scywr::insertqueues::InsertQueuesTx;
+use stats::rand_xoshiro::Xoshiro128PlusPlus;
+use stats::CaConnStats;
+use stats::CaProtoStats;
+use std::net::SocketAddrV4;
+use std::pin::Pin;
+use std::sync::Arc;
+use std::task::Context;
+use std::task::Poll;
+use std::time::Instant;
+use taskrun::tokio;
+use tokio::net::TcpStream;
+
+#[derive(Debug)]
+pub enum Error {}
+
+type ConnectingFut =
+    Pin<Box<dyn Future<Output = Result<Result<TcpStream, std::io::Error>, tokio::time::error::Elapsed>> + Send>>;
+
+enum ConnectedState {
+    Init(CaProto),
+    Handshake(CaProto),
+    PeerReady(CaProto),
+}
+
+enum CaConnState {
+    Connecting(Instant, SocketAddrV4, ConnectingFut),
+    Connected(CaProto),
+    Shutdown(EndOfStreamReason),
+    Done,
+}
+
+struct CaConn {
+    opts: CaConnOpts,
+    backend: String,
+    state: CaConnState,
+    rng: Xoshiro128PlusPlus,
+}
+
+impl CaConn {
+    fn new(
+        opts: CaConnOpts,
+        backend: String,
+        remote_addr: SocketAddrV4,
+        local_epics_hostname: String,
+        iqtx: InsertQueuesTx,
+        channel_info_query_tx: Sender<ChannelInfoQuery>,
+        stats: Arc<CaConnStats>,
+        ca_proto_stats: Arc<CaProtoStats>,
+    ) -> Self {
+        let tsnow = Instant::now();
+        let (cq_tx, cq_rx) = async_channel::bounded::<ConnCommand>(32);
+        let mut rng = stats::xoshiro_from_time();
+        Self {
+            opts,
+            backend,
+            state: CaConnState::Connecting(tsnow, remote_addr, err::todoval()),
+            rng,
+        }
+    }
+}
+
+impl Stream for CaConn {
+    type Item = CaConnEvent;
+
+    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
+        use Poll::*;
+        todo!()
+    }
+}
diff --git a/netfetch/src/ca/conn2/conncmd.rs b/netfetch/src/ca/conn2/conncmd.rs
new file mode 100644
index 0000000..576f02c
--- /dev/null
+++ b/netfetch/src/ca/conn2/conncmd.rs
@@ -0,0 +1,49 @@
+use crate::conf::ChannelConfig;
+use atomic::AtomicUsize;
+use series::ChannelStatusSeriesId;
+use std::sync::atomic;
+
+#[derive(Debug)]
+pub enum ConnCommandKind {
+    ChannelAdd(ChannelConfig, ChannelStatusSeriesId),
+    ChannelClose(String),
+    Shutdown,
+}
+
+#[derive(Debug)]
+pub struct ConnCommand {
+    id: usize,
+    kind: ConnCommandKind,
+}
+
+impl ConnCommand {
+    pub fn channel_add(conf: ChannelConfig, cssid: ChannelStatusSeriesId) -> Self {
+        Self {
+            id: Self::make_id(),
+            kind: ConnCommandKind::ChannelAdd(conf, cssid),
+        }
+    }
+
+    pub fn channel_close(name: String) -> Self {
+        Self {
+            id: Self::make_id(),
+            kind: ConnCommandKind::ChannelClose(name),
+        }
+    }
+
+    pub fn shutdown() -> Self {
+        Self {
+            id: Self::make_id(),
+            kind: ConnCommandKind::Shutdown,
+        }
+    }
+
+    fn make_id() -> usize {
+        static ID: AtomicUsize = AtomicUsize::new(0);
+        ID.fetch_add(1, atomic::Ordering::AcqRel)
+    }
+
+    pub fn id(&self) -> usize {
+        self.id
+    }
+}
diff --git a/netfetch/src/ca/conn2/connevent.rs b/netfetch/src/ca/conn2/connevent.rs
new file mode 100644
index 0000000..eddbbfc
--- /dev/null
+++ b/netfetch/src/ca/conn2/connevent.rs
@@ -0,0 +1,87 @@
+use super::channelstateinfo::ChannelStateInfo;
+use core::fmt;
+use series::ChannelStatusSeriesId;
+use std::collections::BTreeMap;
+use std::time::Instant;
+
+#[derive(Debug)]
+pub struct CaConnEvent {
+    pub ts: Instant,
+    pub value: CaConnEventValue,
+}
+
+impl CaConnEvent {
+    pub fn new(ts: Instant, value: CaConnEventValue) -> Self {
+        Self { ts, value }
+    }
+
+    pub fn err_now(err: super::conn::Error) -> Self {
+        Self::new_now(CaConnEventValue::EndOfStream(EndOfStreamReason::Error(err)))
+    }
+
+    pub fn new_now(value: CaConnEventValue) -> Self {
+        Self {
+            ts: Instant::now(),
+            value,
+        }
+    }
+
+    pub fn desc_short(&self) -> CaConnEventDescShort {
+        CaConnEventDescShort { inner: self }
+    }
+}
+
+pub struct CaConnEventDescShort<'a> {
+    inner: &'a CaConnEvent,
+}
+
+impl<'a> fmt::Display for CaConnEventDescShort<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            fmt,
+            "CaConnEventDescShort {{ ts: {:?}, value: {} }}",
+            self.inner.ts,
+            self.inner.value.desc_short()
+        )
+    }
+}
+
+#[derive(Debug)]
+pub enum CaConnEventValue {
+    None,
+    EchoTimeout,
+    // ConnCommandResult(ConnCommandResult),
+    ChannelStatus(ChannelStatusPartial),
+    ChannelCreateFail(String),
+    EndOfStream(EndOfStreamReason),
+}
+
+impl CaConnEventValue {
+    pub fn desc_short(&self) -> &'static str {
+        match self {
+            CaConnEventValue::None => "None",
+            CaConnEventValue::EchoTimeout => "EchoTimeout",
+            // CaConnEventValue::ConnCommandResult(_) => "ConnCommandResult",
+            CaConnEventValue::ChannelStatus(_) => "ChannelStatus",
+            CaConnEventValue::ChannelCreateFail(_) => "ChannelCreateFail",
+            CaConnEventValue::EndOfStream(_) => "EndOfStream",
+        }
+    }
+}
+
+#[derive(Debug)]
+pub enum EndOfStreamReason {
+    UnspecifiedReason,
+    Error(super::conn::Error),
+    ConnectRefused,
+    ConnectTimeout,
+    OnCommand,
+    RemoteClosed,
+    IocTimeout,
+    IoError,
+}
+
+#[derive(Debug)]
+pub struct ChannelStatusPartial {
+    pub channel_statuses: BTreeMap<ChannelStatusSeriesId, ChannelStateInfo>,
+}
diff --git a/netfetch/src/ca/connset.rs b/netfetch/src/ca/connset.rs
index 4a5ae7c..3e53301 100644
--- a/netfetch/src/ca/connset.rs
+++ b/netfetch/src/ca/connset.rs
@@ -358,6 +358,7 @@ pub struct CaConnSet {
     find_ioc_query_sender: Pin<Box<SenderPolling<IocAddrQuery>>>,
     find_ioc_res_rx: Pin<Box<Receiver<VecDeque<FindIocRes>>>>,
     iqtx: Pin<Box<InsertQueuesTx>>,
+    storage_insert_queue_l1: VecDeque<QueryItem>,
     storage_insert_queue: VecDeque<VecDeque<QueryItem>>,
     storage_insert_sender: Pin<Box<SenderPolling<VecDeque<QueryItem>>>>,
     ca_conn_res_tx: Pin<Box<Sender<(SocketAddr, CaConnEvent)>>>,
@@ -424,6 +425,7 @@ impl CaConnSet {
             find_ioc_query_sender: Box::pin(SenderPolling::new(find_ioc_query_tx)),
             find_ioc_res_rx: Box::pin(find_ioc_res_rx),
             iqtx: Box::pin(iqtx.clone()),
+            storage_insert_queue_l1: VecDeque::new(),
             storage_insert_queue: VecDeque::new(),
 
             // TODO simplify for all combinations
@@ -639,11 +641,10 @@ impl CaConnSet {
                         let item = serieswriter::fixgridwriter::ChannelStatusWriteValue::new(ts, status.to_u64());
                         let state = &mut writer_status_state;
                         let ts_net = Instant::now();
-                        let mut deque = VecDeque::new();
+                        let deque = &mut self.storage_insert_queue_l1;
                         writer_status
-                            .write(item, state, ts_net, ts, &mut deque)
+                            .write(item, state, ts_net, ts, deque)
                             .map_err(Error::from_string)?;
-                        self.storage_insert_queue.push_back(deque);
                     }
                     *chst2 = ActiveChannelState::WithStatusSeriesId(WithStatusSeriesIdState {
                         cssid: cmd.cssid,
@@ -706,11 +707,10 @@ impl CaConnSet {
                         let item = serieswriter::fixgridwriter::ChannelStatusWriteValue::new(ts, status.to_u64());
                         let state = &mut writer_status_state;
                         let ts_net = Instant::now();
-                        let mut deque = VecDeque::new();
+                        let deque = &mut self.storage_insert_queue_l1;
                         writer_status
-                            .write(item, state, ts_net, ts, &mut deque)
+                            .write(item, state, ts_net, ts, deque)
                             .map_err(Error::from_string)?;
-                        self.storage_insert_queue.push_back(deque);
                     }
                     *st3 = WithStatusSeriesIdState {
                         cssid: cmd.cssid.clone(),
@@ -1594,6 +1594,12 @@ impl CaConnSet {
             // cx.waker().wake_by_ref();
         }
         self.handle_check_health()?;
+        {
+            if self.storage_insert_queue_l1.len() != 0 {
+                let a = core::mem::replace(&mut self.storage_insert_queue_l1, VecDeque::new());
+                self.storage_insert_queue.push_back(a);
+            }
+        }
         Ok(())
     }
 }
diff --git a/scywr/src/senderpolling.rs b/scywr/src/senderpolling.rs
index 920eece..9c3ab23 100644
--- a/scywr/src/senderpolling.rs
+++ b/scywr/src/senderpolling.rs
@@ -1,6 +1,7 @@
 use async_channel::Send;
 use async_channel::SendError;
 use async_channel::Sender;
+use core::fmt;
 use futures_util::Future;
 use pin_project::pin_project;
 use std::marker::PhantomPinned;
@@ -14,6 +15,23 @@ pub enum Error<T> {
     Closed(T),
 }
 
+impl<T> fmt::Debug for Error<T> {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Error::NoSendInProgress => fmt.debug_tuple("NoSendInProgress").finish(),
+            Error::Closed(_) => fmt.debug_tuple("Closed").finish(),
+        }
+    }
+}
+
+impl<T> fmt::Display for Error<T> {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Debug::fmt(self, fmt)
+    }
+}
+
+impl<T> std::error::Error for Error<T> {}
+
 #[pin_project]
 pub struct SenderPolling<T>
 where