Mercurial > hg > nginx
view src/os/win32/ngx_socket.c @ 8972:077a1e403446 quic
QUIC: additional limit for probing packets.
RFC 9000, 9.3. Responding to Connection Migration:
An endpoint only changes the address to which it sends packets in
response to the highest-numbered non-probing packet.
The patch extends this requirement to probing packets. Although it may
seem excessive, it helps with mitigation of reply attacks (when an off-path
attacker has copied packet with PATH_CHALLENGE and uses different
addresses to exhaust available connection ids).
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 20 Jan 2022 22:00:25 +0300 |
parents | efd71d49bde0 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> int ngx_nonblocking(ngx_socket_t s) { unsigned long nb = 1; return ioctlsocket(s, FIONBIO, &nb); } int ngx_blocking(ngx_socket_t s) { unsigned long nb = 0; return ioctlsocket(s, FIONBIO, &nb); } int ngx_socket_nread(ngx_socket_t s, int *n) { unsigned long nread; if (ioctlsocket(s, FIONREAD, &nread) == -1) { return -1; } *n = nread; return 0; } int ngx_tcp_push(ngx_socket_t s) { return 0; }