mirror of https://github.com/status-im/op-geth.git
309 lines
6.0 KiB
Markdown
309 lines
6.0 KiB
Markdown
npipe [![Build status](https://ci.appveyor.com/api/projects/status/00vuepirsot29qwi)](https://ci.appveyor.com/project/natefinch/npipe) [![GoDoc](https://godoc.org/gopkg.in/natefinch/npipe.v2?status.svg)](https://godoc.org/gopkg.in/natefinch/npipe.v2)
|
|
=====
|
|
Package npipe provides a pure Go wrapper around Windows named pipes.
|
|
|
|
Windows named pipe documentation: http://msdn.microsoft.com/en-us/library/windows/desktop/aa365780
|
|
|
|
Note that the code lives at https://github.com/natefinch/npipe (v2 branch)
|
|
but should be imported as gopkg.in/natefinch/npipe.v2 (the package name is
|
|
still npipe).
|
|
|
|
npipe provides an interface based on stdlib's net package, with Dial, Listen,
|
|
and Accept functions, as well as associated implementations of net.Conn and
|
|
net.Listener. It supports rpc over the connection.
|
|
|
|
### Notes
|
|
* Deadlines for reading/writing to the connection are only functional in Windows Vista/Server 2008 and above, due to limitations with the Windows API.
|
|
|
|
* The pipes support byte mode only (no support for message mode)
|
|
|
|
### Examples
|
|
The Dial function connects a client to a named pipe:
|
|
|
|
|
|
conn, err := npipe.Dial(`\\.\pipe\mypipename`)
|
|
if err != nil {
|
|
<handle error>
|
|
}
|
|
fmt.Fprintf(conn, "Hi server!\n")
|
|
msg, err := bufio.NewReader(conn).ReadString('\n')
|
|
...
|
|
|
|
The Listen function creates servers:
|
|
|
|
|
|
ln, err := npipe.Listen(`\\.\pipe\mypipename`)
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
for {
|
|
conn, err := ln.Accept()
|
|
if err != nil {
|
|
// handle error
|
|
continue
|
|
}
|
|
go handleConnection(conn)
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
## Variables
|
|
``` go
|
|
var ErrClosed = PipeError{"Pipe has been closed.", false}
|
|
```
|
|
ErrClosed is the error returned by PipeListener.Accept when Close is called
|
|
on the PipeListener.
|
|
|
|
|
|
|
|
## type PipeAddr
|
|
``` go
|
|
type PipeAddr string
|
|
```
|
|
PipeAddr represents the address of a named pipe.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### func (PipeAddr) Network
|
|
``` go
|
|
func (a PipeAddr) Network() string
|
|
```
|
|
Network returns the address's network name, "pipe".
|
|
|
|
|
|
|
|
### func (PipeAddr) String
|
|
``` go
|
|
func (a PipeAddr) String() string
|
|
```
|
|
String returns the address of the pipe
|
|
|
|
|
|
|
|
## type PipeConn
|
|
``` go
|
|
type PipeConn struct {
|
|
// contains filtered or unexported fields
|
|
}
|
|
```
|
|
PipeConn is the implementation of the net.Conn interface for named pipe connections.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### func Dial
|
|
``` go
|
|
func Dial(address string) (*PipeConn, error)
|
|
```
|
|
Dial connects to a named pipe with the given address. If the specified pipe is not available,
|
|
it will wait indefinitely for the pipe to become available.
|
|
|
|
The address must be of the form \\.\\pipe\<name> for local pipes and \\<computer>\pipe\<name>
|
|
for remote pipes.
|
|
|
|
Dial will return a PipeError if you pass in a badly formatted pipe name.
|
|
|
|
Examples:
|
|
|
|
|
|
// local pipe
|
|
conn, err := Dial(`\\.\pipe\mypipename`)
|
|
|
|
// remote pipe
|
|
conn, err := Dial(`\\othercomp\pipe\mypipename`)
|
|
|
|
|
|
### func DialTimeout
|
|
``` go
|
|
func DialTimeout(address string, timeout time.Duration) (*PipeConn, error)
|
|
```
|
|
DialTimeout acts like Dial, but will time out after the duration of timeout
|
|
|
|
|
|
|
|
|
|
### func (\*PipeConn) Close
|
|
``` go
|
|
func (c *PipeConn) Close() error
|
|
```
|
|
Close closes the connection.
|
|
|
|
|
|
|
|
### func (\*PipeConn) LocalAddr
|
|
``` go
|
|
func (c *PipeConn) LocalAddr() net.Addr
|
|
```
|
|
LocalAddr returns the local network address.
|
|
|
|
|
|
|
|
### func (\*PipeConn) Read
|
|
``` go
|
|
func (c *PipeConn) Read(b []byte) (int, error)
|
|
```
|
|
Read implements the net.Conn Read method.
|
|
|
|
|
|
|
|
### func (\*PipeConn) RemoteAddr
|
|
``` go
|
|
func (c *PipeConn) RemoteAddr() net.Addr
|
|
```
|
|
RemoteAddr returns the remote network address.
|
|
|
|
|
|
|
|
### func (\*PipeConn) SetDeadline
|
|
``` go
|
|
func (c *PipeConn) SetDeadline(t time.Time) error
|
|
```
|
|
SetDeadline implements the net.Conn SetDeadline method.
|
|
Note that timeouts are only supported on Windows Vista/Server 2008 and above
|
|
|
|
|
|
|
|
### func (\*PipeConn) SetReadDeadline
|
|
``` go
|
|
func (c *PipeConn) SetReadDeadline(t time.Time) error
|
|
```
|
|
SetReadDeadline implements the net.Conn SetReadDeadline method.
|
|
Note that timeouts are only supported on Windows Vista/Server 2008 and above
|
|
|
|
|
|
|
|
### func (\*PipeConn) SetWriteDeadline
|
|
``` go
|
|
func (c *PipeConn) SetWriteDeadline(t time.Time) error
|
|
```
|
|
SetWriteDeadline implements the net.Conn SetWriteDeadline method.
|
|
Note that timeouts are only supported on Windows Vista/Server 2008 and above
|
|
|
|
|
|
|
|
### func (\*PipeConn) Write
|
|
``` go
|
|
func (c *PipeConn) Write(b []byte) (int, error)
|
|
```
|
|
Write implements the net.Conn Write method.
|
|
|
|
|
|
|
|
## type PipeError
|
|
``` go
|
|
type PipeError struct {
|
|
// contains filtered or unexported fields
|
|
}
|
|
```
|
|
PipeError is an error related to a call to a pipe
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### func (PipeError) Error
|
|
``` go
|
|
func (e PipeError) Error() string
|
|
```
|
|
Error implements the error interface
|
|
|
|
|
|
|
|
### func (PipeError) Temporary
|
|
``` go
|
|
func (e PipeError) Temporary() bool
|
|
```
|
|
Temporary implements net.AddrError.Temporary()
|
|
|
|
|
|
|
|
### func (PipeError) Timeout
|
|
``` go
|
|
func (e PipeError) Timeout() bool
|
|
```
|
|
Timeout implements net.AddrError.Timeout()
|
|
|
|
|
|
|
|
## type PipeListener
|
|
``` go
|
|
type PipeListener struct {
|
|
// contains filtered or unexported fields
|
|
}
|
|
```
|
|
PipeListener is a named pipe listener. Clients should typically
|
|
use variables of type net.Listener instead of assuming named pipe.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### func Listen
|
|
``` go
|
|
func Listen(address string) (*PipeListener, error)
|
|
```
|
|
Listen returns a new PipeListener that will listen on a pipe with the given
|
|
address. The address must be of the form \\.\pipe\<name>
|
|
|
|
Listen will return a PipeError for an incorrectly formatted pipe name.
|
|
|
|
|
|
|
|
|
|
### func (\*PipeListener) Accept
|
|
``` go
|
|
func (l *PipeListener) Accept() (net.Conn, error)
|
|
```
|
|
Accept implements the Accept method in the net.Listener interface; it
|
|
waits for the next call and returns a generic net.Conn.
|
|
|
|
|
|
|
|
### func (\*PipeListener) AcceptPipe
|
|
``` go
|
|
func (l *PipeListener) AcceptPipe() (*PipeConn, error)
|
|
```
|
|
AcceptPipe accepts the next incoming call and returns the new connection.
|
|
|
|
|
|
|
|
### func (\*PipeListener) Addr
|
|
``` go
|
|
func (l *PipeListener) Addr() net.Addr
|
|
```
|
|
Addr returns the listener's network address, a PipeAddr.
|
|
|
|
|
|
|
|
### func (\*PipeListener) Close
|
|
``` go
|
|
func (l *PipeListener) Close() error
|
|
```
|
|
Close stops listening on the address.
|
|
Already Accepted connections are not closed.
|