romenskiy2012/curl
1
0
Fork 0
mirror of https://github.com/curl/curl.git synced 2026-07-28 05:43:06 +03:00
Code Issues Projects Releases Packages Wiki Activity

quic: ignore EMSGSIZE on receive

Browse source 
Some OSes (Linux, macOS, more?) will generate an EMSGSIZE socket error on the next recv all after receiving an ICMP Packet Too Big on an unconnected UDP socket.

These can be safely ignored as QUIC's DPLPMTUD uses MTU probes that do not rely on receiving ICMP packets.
This commit is contained in:
Ethan Everett 2025-09-08 16:50:58 -07:00
parent f8ff233cdf
commit f0ae715235
1 changed files with 4 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
lib/vquic/vquic.c
View file

@ -404,7 +404,7 @@ static CURLcode recvmmsg_packets(struct Curl_cfilter *cf,
}
while((mcount = recvmmsg(qctx->sockfd, mmsg, n, 0, NULL)) == -1 &&
SOCKERRNO == SOCKEINTR)
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(mcount == -1) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
@ -420,7 +420,7 @@ static CURLcode recvmmsg_packets(struct Curl_cfilter *cf,
goto out;
}
Curl_strerror(SOCKERRNO, errstr, sizeof(errstr));
failf(data, "QUIC: recvmsg() unexpectedly returned %d (errno=%d; %s)",
failf(data, "QUIC: recvmmsg() unexpectedly returned %d (errno=%d; %s)",
mcount, SOCKERRNO, errstr);
result = CURLE_RECV_ERROR;
goto out;
@ -497,7 +497,7 @@ static CURLcode recvmsg_packets(struct Curl_cfilter *cf,
msg.msg_controllen = sizeof(msg_ctrl);
while((nread = recvmsg(qctx->sockfd, &msg, 0)) == -1 &&
SOCKERRNO == SOCKEINTR)
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(nread == -1) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
@ -571,7 +571,7 @@ static CURLcode recvfrom_packets(struct Curl_cfilter *cf,
while((nread = recvfrom(qctx->sockfd, (char *)buf, bufsize, 0,
(struct sockaddr *)&remote_addr,
&remote_addrlen)) == -1 &&
SOCKERRNO == SOCKEINTR)
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(nread == -1) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {