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authorDaniel Stenberg <daniel@haxx.se>2018-06-14 13:55:45 +0200
committerDaniel Stenberg <daniel@haxx.se>2018-06-14 13:55:45 +0200
commit6bc83044881b241857ef061a7b648738a16e408a (patch)
tree8dcf8cc53c633c394077281132bd98f1f0c13ae9
parent47762f55839268213cc79708b51edd7cbef2893a (diff)
KNOWN_BUGS: slow connect to localhost on Windows
Closes #2281
-rw-r--r--docs/KNOWN_BUGS14
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index 9757c2c50..0c5e68f66 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -88,6 +88,7 @@ problems may have been fixed or changed somewhat since this was written!
11.3 c-ares deviates from stock resolver on http://1346569778
11.4 HTTP test server 'connection-monitor' problems
11.5 Connection information when using TCP Fast Open
+ 11.6 slow connect to localhost on Windows
12. LDAP and OpenLDAP
12.1 OpenLDAP hangs after returning results
@@ -638,6 +639,19 @@ problems may have been fixed or changed somewhat since this was written!
See https://github.com/curl/curl/issues/1332
+11.6 slow connect to localhost on Windows
+
+ When connecting to "localhost" on Windows, curl will resolve the name for
+ both ipv4 and ipv6 and try to connect to both happy eyeballs-style. Something
+ in there does however make it take 200 millseconds to succeed - which is the
+ HAPPY_EYEBALLS_TIMEOUT define exactly. Lowering that define speeds up the
+ connection, suggesting a problem in the HE handling.
+
+ If we can *know* that we're talking to a local host, we should lower the
+ happy eyeballs delay timeout for IPv6 (related: hardcode the "localhost"
+ addresses, mentioned in TODO). Possibly we should reduce that delay for all.
+
+ https://github.com/curl/curl/issues/2281
12. LDAP and OpenLDAP