unconditional SWS-override-timer reset after sending data

reset SWS-override-timer if trigger but send is blocked (Nagles)

Author: JPDye

src/socket/tcp.rs

@@ -2534,6 +2534,10 @@ impl<'a> Socket<'a> {
             self.reset();
             return Ok(());
         } else {
+            if self.sws_override_timer.should_override(cx.now()) {
+                self.sws_override_timer = SWSOverrideTimer::Idle;
+            }
+
             let (_, sws_blocks) = self.send_is_blocked(cx);
             if sws_blocks && !self.tx_buffer.is_empty() && self.sws_override_timer.is_idle() {
                 // RFC 9293 (3.6.8.2.1) If SWS blocks sending of data, start override timer.
@@ -2769,11 +2773,7 @@ impl<'a> Socket<'a> {
             self.timer.set_for_retransmit(cx.now(), rto);
         }
 
-        // Reset the override timer after sending — it fires once per override cycle.
-        if self.sws_override_timer.should_override(cx.now()) {
-            self.sws_override_timer = SWSOverrideTimer::Idle;
-        }
-
+        self.sws_override_timer = SWSOverrideTimer::Idle;
         let (_, sws_blocks) = self.send_is_blocked(cx);
         if sws_blocks && !self.tx_buffer.is_empty() && self.sws_override_timer.is_idle() {
             // RFC 9293 (3.6.8.2.1) If SWS blocks sending of data, start override timer.