6a3d0b6d63
Stefan Eissing
2025-12-15
Subject
vquic: ignore 0-length UDP packets
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Commit Diff GitHub →
lib/vquic/vquic.c+14 -4
| @@ -441,12 +441,14 @@ static CURLcode recvmmsg_packets(struct Curl_cfilter *cf, | |
| ++calls; | |
| for(i = 0; i < mcount; ++i) { | |
| + | /* A zero-length UDP packet is no QUIC packet. Ignore. */ |
| + | if(!mmsg[i].msg_len) |
| + | continue; |
| total_nread += mmsg[i].msg_len; | |
| gso_size = vquic_msghdr_get_udp_gro(&mmsg[i].msg_hdr); | |
| - | if(gso_size == 0) { |
| + | if(gso_size == 0) |
| gso_size = mmsg[i].msg_len; | |
| - | } |
| result = recv_cb(bufs[i], mmsg[i].msg_len, gso_size, | |
| mmsg[i].msg_hdr.msg_name, | |
| @@ -523,10 +525,13 @@ static CURLcode recvmsg_packets(struct Curl_cfilter *cf, | |
| total_nread += nread; | |
| ++calls; | |
| + | /* A 0-length UDP packet is no QUIC packet */ |
| + | if(!nread) |
| + | continue; |
| + | |
| gso_size = vquic_msghdr_get_udp_gro(&msg); | |
| - | if(gso_size == 0) { |
| + | if(gso_size == 0) |
| gso_size = nread; | |
| - | } |
| result = recv_cb(buf, nread, gso_size, | |
| msg.msg_name, msg.msg_namelen, 0, userp); | |
| @@ -587,6 +592,11 @@ static CURLcode recvfrom_packets(struct Curl_cfilter *cf, | |
| ++pkts; | |
| ++calls; | |
| + | |
| + | /* A 0-length UDP packet is no QUIC packet */ |
| + | if(!nread) |
| + | continue; |
| + | |
| total_nread += nread; | |
| result = recv_cb(buf, nread, nread, &remote_addr, remote_addrlen, | |
| 0, userp); | |