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https://github.com/golang/go
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afd2d2b6df
Not only by network, transport-layer intermediaries but by virtualization stuff in a node, it is hard to identify the root cause of weird faults without information of packet flows after disaster happened. This change adds Source field to OpError to be able to represent a 5-tuple of internet transport protocols for helping dealing with complicated systems. Also clarifies the usage of Source and Addr fields. Updates #4856. Change-Id: I96a523fe391ed14406bfb21604c461d4aac2fa19 Reviewed-on: https://go-review.googlesource.com/9231 Reviewed-by: Ian Lance Taylor <iant@golang.org>
49 lines
1.6 KiB
Go
49 lines
1.6 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import "os"
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type fileAddr string
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func (fileAddr) Network() string { return "file+net" }
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func (f fileAddr) String() string { return string(f) }
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// FileConn returns a copy of the network connection corresponding to
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// the open file f.
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// It is the caller's responsibility to close f when finished.
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// Closing c does not affect f, and closing f does not affect c.
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func FileConn(f *os.File) (c Conn, err error) {
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c, err = fileConn(f)
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if err != nil {
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err = &OpError{Op: "file", Net: "file+net", Source: nil, Addr: fileAddr(f.Name()), Err: err}
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}
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return
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}
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// FileListener returns a copy of the network listener corresponding
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// to the open file f.
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// It is the caller's responsibility to close ln when finished.
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// Closing ln does not affect f, and closing f does not affect ln.
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func FileListener(f *os.File) (ln Listener, err error) {
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ln, err = fileListener(f)
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if err != nil {
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err = &OpError{Op: "file", Net: "file+net", Source: nil, Addr: fileAddr(f.Name()), Err: err}
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}
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return
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}
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// FilePacketConn returns a copy of the packet network connection
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// corresponding to the open file f.
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// It is the caller's responsibility to close f when finished.
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// Closing c does not affect f, and closing f does not affect c.
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func FilePacketConn(f *os.File) (c PacketConn, err error) {
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c, err = filePacketConn(f)
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if err != nil {
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err = &OpError{Op: "file", Net: "file+net", Source: nil, Addr: fileAddr(f.Name()), Err: err}
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}
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return
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}
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