From 3e3d3f0c2b04681e09696990b2214d4873fb5cfe Mon Sep 17 00:00:00 2001
From: Christoffer Martinsson <cm@cmtec.se>
Date: Thu, 6 Nov 2025 12:04:49 +0100
Subject: [PATCH] Fix Tab key 1-second delay by reverting ZMQ to non-blocking
 mode

- Change receive_metrics() from blocking to DONTWAIT to prevent main loop freezing
- Eliminate 1-second ZMQ socket timeout that was blocking UI after Tab key press
- Main loop now continues immediately after immediate render instead of waiting
- Maintain heartbeat-based host detection while fixing visual responsiveness
- Fix blocking operation introduced when implementing heartbeat timeout mechanism
- Tab navigation now truly immediate without any network operation delays
- Bump version to 0.1.61
---
 Cargo.lock                         | 6 +++---
 agent/Cargo.toml                   | 2 +-
 dashboard/Cargo.toml               | 2 +-
 dashboard/src/communication/mod.rs | 4 ++--
 shared/Cargo.toml                  | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 7f935ef..04d91b2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
  "anyhow",
  "chrono",
@@ -292,7 +292,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -315,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
  "chrono",
  "serde",
diff --git a/agent/Cargo.toml b/agent/Cargo.toml
index 36ac9e4..c84c186 100644
--- a/agent/Cargo.toml
+++ b/agent/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.60"
+version = "0.1.61"
 edition = "2021"
 
 [dependencies]
diff --git a/dashboard/Cargo.toml b/dashboard/Cargo.toml
index a6392d0..0c7d136 100644
--- a/dashboard/Cargo.toml
+++ b/dashboard/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.60"
+version = "0.1.61"
 edition = "2021"
 
 [dependencies]
diff --git a/dashboard/src/communication/mod.rs b/dashboard/src/communication/mod.rs
index 4ffb01a..2d9688d 100644
--- a/dashboard/src/communication/mod.rs
+++ b/dashboard/src/communication/mod.rs
@@ -141,9 +141,9 @@ impl ZmqConsumer {
         }
     }
 
-    /// Receive metrics from any connected agent (with timeout)
+    /// Receive metrics from any connected agent (non-blocking)
     pub async fn receive_metrics(&mut self) -> Result<Option<MetricMessage>> {
-        match self.subscriber.recv_bytes(0) {
+        match self.subscriber.recv_bytes(zmq::DONTWAIT) {
             Ok(data) => {
                 debug!("Received {} bytes from ZMQ", data.len());
 
diff --git a/shared/Cargo.toml b/shared/Cargo.toml
index cb95214..91a8426 100644
--- a/shared/Cargo.toml
+++ b/shared/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.60"
+version = "0.1.61"
 edition = "2021"
 
 [dependencies]