retry the PMTUD integration test up to 3 times (#4519)

This test is very sensitive to packet loss, as the loss of a single Path MTU probe packet makes DPLPMTUD clip the assumed MTU at that value.
quic-go · May 14, 2024 · 056a332 · 056a332
1 parent 2557fb9
commit 056a332
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/integrationtests/self/mtu_test.go b/integrationtests/self/mtu_test.go
@@ -17,8 +17,10 @@ import (
 )
 
 var _ = Describe("DPLPMTUD", func() {
- It("discovers the MTU", func() {
- rtt := scaleDuration(10 * time.Millisecond)
+ // This test is very sensitive to packet loss, as the loss of a single Path MTU probe packet makes DPLPMTUD
+ // clip the assumed MTU at that value.
+ It("discovers the MTU", FlakeAttempts(3), func() {
+ rtt := scaleDuration(5 * time.Millisecond)
  const mtu = 1400
 
  ln, err := quic.ListenAddr(