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| author | Brad Fitzpatrick <bradfitz@golang.org> | 2022-07-26 13:29:16 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2022-07-27 15:04:58 +0000 |
| commit | 424814615491c604e6a0945f33e5a7b779dc2be5 (patch) | |
| tree | b8ab9ca890b0b59eb7eef6c6df10d74de3bf64e0 | |
| parent | faf4e97200df9415d55b04924ce77599f9e6fdfa (diff) | |
| download | go-424814615491c604e6a0945f33e5a7b779dc2be5.tar.gz go-424814615491c604e6a0945f33e5a7b779dc2be5.zip | |
net: document UDPConn.ReadFromUDPAddrPort's AddrPort result more
Clarify the form of its IPv4 addresses when listening on an
unspecified address.
(found while testing/reviewing CL 399454)
Change-Id: I62b367f5a4e6d340eb72dd7ec342080f1821e63e
Reviewed-on: https://go-review.googlesource.com/c/go/+/419614
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
| -rw-r--r-- | src/net/udpsock.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/net/udpsock.go b/src/net/udpsock.go index 6d29a39edf..e30624dea5 100644 --- a/src/net/udpsock.go +++ b/src/net/udpsock.go @@ -164,6 +164,10 @@ func (c *UDPConn) ReadFrom(b []byte) (int, Addr, error) { } // ReadFromUDPAddrPort acts like ReadFrom but returns a netip.AddrPort. +// +// If c is bound to an unspecified address, the returned +// netip.AddrPort's address might be an IPv4-mapped IPv6 address. +// Use netip.Addr.Unmap to get the address without the IPv6 prefix. func (c *UDPConn) ReadFromUDPAddrPort(b []byte) (n int, addr netip.AddrPort, err error) { if !c.ok() { return 0, netip.AddrPort{}, syscall.EINVAL |