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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package syscall
// A RawConn is a raw network connection.
type RawConn interface {
// Control invokes f on the underlying connection's file
// descriptor or handle.
// The file descriptor fd is guaranteed to remain valid while
// f executes but not after f returns.
Control(f func(fd uintptr)) error
// Read invokes f on the underlying connection's file
// descriptor or handle; f is expected to try to read from the
// file descriptor.
// If f returns true, Read returns. Otherwise Read blocks
// waiting for the connection to be ready for reading and
// tries again repeatedly.
// The file descriptor is guaranteed to remain valid while f
// executes but not after f returns.
Read(f func(fd uintptr) (done bool)) error
// Write is like Read but for writing.
Write(f func(fd uintptr) (done bool)) error
}
// Conn is implemented by some types in the net and os packages to provide
// access to the underlying file descriptor or handle.
type Conn interface {
// SyscallConn returns a raw network connection.
SyscallConn() (RawConn, error)
}
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