feat: While using Flex & Steppir or Ultrabeam can prevent transmit when antenna is moving

internal/cat/icomnet.go

@@ -286,19 +286,33 @@ func (n *icomNet) ctrlPump() {
 			switch icnLE.Uint16(buf[4:]) {
 			case 0x07: // ping
 				_, _ = n.ctrl.Write(icnPingReply(buf[:k], n.cID, n.cRemote))
+			case 0x00: // idle keepalive from the rig — nothing to do
 			case 0x01: // retransmit request — resend from the CONTROL sent-buffer
 				if k >= 8 {
 					n.ctrlResend(icnLE.Uint16(buf[6:]))
 				}
 			case 0x05: // rig-initiated disconnect — it dropped US
 				debugLog.Printf("icom net: rig sent DISCONNECT on control stream — session dropped by the rig")
+			default:
+				// Anything else on the control stream is (almost always) the rig's
+				// reply to our token renewal. Log it: a 0x40-length token packet
+				// carries a result code, and if the rig is REJECTING renewals this is
+				// where the ~2-3 min disconnect originates. The hex makes the cause
+				// visible in the friend's log without a protocol analyzer.
+				if k >= 0x18 {
+					debugLog.Printf("icom net: control reply len=%d head=% X", k, buf[:0x18])
+				} else {
+					debugLog.Printf("icom net: control reply len=%d head=% X", k, buf[:k])
+				}
 			}
 		}
 		if time.Since(lastIdle) > 100*time.Millisecond {
 			_, _ = n.ctrl.Write(icnCtrl(0x00, 0, n.cID, n.cRemote))
 			lastIdle = time.Now()
 		}
-		if time.Since(lastToken) > 45*time.Second {
+		// Renew well inside the rig's ~2-min token timeout. 30 s (was 45) leaves room
+		// for one lost renewal + its retransmit before the token would lapse.
+		if time.Since(lastToken) > 30*time.Second {
 			n.renewToken()
 			lastToken = time.Now()
 		}