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net: add conversion from AddrPort to TCPAddr to complement existing inverse

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We already have various member functions of TCPAddr that return an
AddrPort, but we don't have a helper function to go from a AddrPort to a
TCPAddr. UDP has this, but it was left out of TCP. This commit adds the
corresponding function.

Updates #49298.

Change-Id: I85732cf34f47c792fe13a6b4af64fd4b0e85d06a
Reviewed-on: https://go-review.googlesource.com/c/go/+/362596
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Jason A. Donenfeld 2021-11-10 01:04:12 +01:00
parent 1ec51087e5
commit a01a6d6efe
1 changed files with 11 additions and 0 deletions
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11
src/net/tcpsock.go
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@ -96,6 +96,17 @@ func ResolveTCPAddr(network, address string) (*TCPAddr, error) {
return addrs.forResolve(network, address).(*TCPAddr), nil
}
// TCPAddrFromAddrPort returns addr as a TCPAddr. If addr.IsValid() is false,
// then the returned TCPAddr will contain a nil IP field, indicating an
// address family-agnostic unspecified address.
func TCPAddrFromAddrPort(addr netip.AddrPort) *TCPAddr {
return &TCPAddr{
IP: addr.Addr().AsSlice(),
Zone: addr.Addr().Zone(),
Port: int(addr.Port()),
}
}
// TCPConn is an implementation of the Conn interface for TCP network
// connections.
type TCPConn struct {