// 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) }