StandardOutputStream (Jenkins remoting layer 3077.vd69cf116da_6f API)

java.lang.Object
- java.io.OutputStream
- - hudson.remoting.StandardOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable
```
public class StandardOutputStream
extends OutputStream
```
Hint that indicates that we are using stdout with fd=1 as the stream to write to for the channel.
Using stdin/stdout pair for the communication is very convenient for setting up a remote channel, so Jenkins tends to do that, but even with our using System.setOut(PrintStream) to avoid other parts of the Java code to accidentally corrupt the stream, file descriptor 1 continues to point to the stream we use, so native code in JVM can still accidentally pollute the stream.
Fixing that requires the use of dup and close POSIX API calls, which we can only do after the communication gets established and JNA is brought in via remoting. Having Launcher uses this wrapper class allows us to do that without recreating the stream.
When a channel uses StandardOutputStream to communicate, the convention is to make that object available as a channel property.

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors
Constructor Description

StandardOutputStream()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`void`	`flush()`
`boolean`	`isSwapped()`
`OutputStream`	`swap(OutputStream another)`	Atomically swaps the underlying stream to another stream and returns it.
`void`	`write(byte[] b)`
`void`	`write(byte[] b, int off, int len)`
`void`	`write(int b)`

Methods inherited from class java.io.OutputStream
nullOutputStream

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StandardOutputStream
```
public StandardOutputStream()
```
- Method Detail
  - swap
```
public OutputStream swap(OutputStream another)
```
    Atomically swaps the underlying stream to another stream and returns it.
  - isSwapped
```
public boolean isSwapped()
```
  - write
```
public void write(int b)
           throws IOException
```
    Specified by:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(@NonNull
                  byte[] b)
           throws IOException
```
    Overrides:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(@NonNull
                  byte[] b,
                  int off,
                  int len)
           throws IOException
```
    Overrides:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - flush
```
public void flush()
           throws IOException
```
    Specified by:
    
    flush in interface Flushable
    
    Overrides:
    
    flush in class OutputStream
    
    Throws:
    
    IOException
  - close
```
public void close()
           throws IOException
```
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable
    
    Overrides:
    
    close in class OutputStream
    
    Throws:
    
    IOException