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641a90ea33
For eventual use by net/udprelay.Server Updates tailscale/corp#31164 Signed-off-by: Jordan Whited <jordan@tailscale.com>
38 lines
826 B
Go
38 lines
826 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package sockopts contains logic for applying socket options.
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package sockopts
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import (
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"net"
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"runtime"
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"tailscale.com/types/nettype"
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)
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// BufferDirection represents either the read/receive or write/send direction
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// of a socket buffer.
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type BufferDirection string
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const (
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ReadDirection BufferDirection = "read"
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WriteDirection BufferDirection = "write"
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)
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func portableSetBufferSize(pconn nettype.PacketConn, direction BufferDirection, size int) error {
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if runtime.GOOS == "plan9" {
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// Not supported. Don't try. Avoid logspam.
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return nil
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}
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var err error
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if c, ok := pconn.(*net.UDPConn); ok {
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if direction == WriteDirection {
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err = c.SetWriteBuffer(size)
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} else {
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err = c.SetReadBuffer(size)
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}
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}
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return err
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}
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