From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 26 Jul 2022 22:42:42 +0000 (+0200)
Subject: connect: revert the use of IP*_RECVERR
X-Git-Tag: curl-7_85_0~115
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3141062c2338138eded3a91892e5bde20a5365cd;p=thirdparty%2Fcurl.git

connect: revert the use of IP*_RECVERR

The options were added in #6341 and d13179d, but cause problems: Lots of
POLLIN event occurs but recvfrom read nothing.

Reported-by: Tatsuhiro Tsujikawa
Fixes #9209
Closes #9215
---

diff --git a/lib/connect.c b/lib/connect.c
index 424197234c..68cfe72ef1 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -1667,20 +1667,6 @@ CURLcode Curl_socket(struct Curl_easy *data,
   }
 #endif
 
-#if defined(__linux__) && defined(IP_RECVERR)
-  if(addr->socktype == SOCK_DGRAM) {
-    int one = 1;
-    switch(addr->family) {
-    case AF_INET:
-      (void)setsockopt(*sockfd, SOL_IP, IP_RECVERR, &one, sizeof(one));
-      break;
-    case AF_INET6:
-      (void)setsockopt(*sockfd, SOL_IPV6, IPV6_RECVERR, &one, sizeof(one));
-      break;
-    }
-  }
-#endif
-
   return CURLE_OK;
 }