From: AN Long <aisk1988@gmail.com>
Date: Tue, 12 Aug 2025 12:36:54 +0000 (+0000)
Subject: net: update document on limitation of iprawsock on Windows
X-Git-Tag: go1.26rc1~994
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=94b7d519bd;p=gostls13.git

net: update document on limitation of iprawsock on Windows

Fixed: #23209

Change-Id: I3bfe9f5192cbacf387386efda72f04eeec5ff3be
GitHub-Last-Rev: 660a62d139dda21fcaea1e95394ca38521c7f00a
GitHub-Pull-Request: golang/go#74857
Reviewed-on: https://go-review.googlesource.com/c/go/+/692895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sean Liao <sean@liao.dev>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Sean Liao <sean@liao.dev>
---

diff --git a/src/net/iprawsock.go b/src/net/iprawsock.go
index 80a80fef7d..26134d7e76 100644
--- a/src/net/iprawsock.go
+++ b/src/net/iprawsock.go
@@ -25,6 +25,12 @@ import (
 // BUG(mikio): On JS and Plan 9, methods and functions related
 // to IPConn are not implemented.
 
+// BUG: On Windows, raw IP sockets are restricted by the operating system.
+// Sending TCP data, sending UDP data with invalid source addresses,
+// and calling bind with TCP protocol don't work.
+//
+// See Winsock reference for details.
+
 func ipAddrFromAddr(addr netip.Addr) *IPAddr {
 	return &IPAddr{
 		IP:   addr.AsSlice(),