HttpClientUpgradeHandler.UpgradeCodec (Netty/Codec/HTTP 4.2.0.Alpha1 API)

Enclosing class:

HttpClientUpgradeHandler
```
public static interface HttpClientUpgradeHandler.UpgradeCodec
```
A codec that the source can be upgraded to.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CharSequence`	`protocol()`	Returns the name of the protocol supported by this codec, as indicated by the `'UPGRADE'` header.
`Collection<CharSequence>`	`setUpgradeHeaders(io.netty.channel.ChannelHandlerContext ctx, HttpRequest upgradeRequest)`	Sets any protocol-specific headers required to the upgrade request.
`void`	`upgradeTo(io.netty.channel.ChannelHandlerContext ctx, FullHttpResponse upgradeResponse)`	Performs an HTTP protocol upgrade from the source codec.

- Method Detail
  - protocol
```
CharSequence protocol()
```
    Returns the name of the protocol supported by this codec, as indicated by the 'UPGRADE' header.
  - setUpgradeHeaders
```
Collection<CharSequence> setUpgradeHeaders(io.netty.channel.ChannelHandlerContext ctx,
                                           HttpRequest upgradeRequest)
```
    Sets any protocol-specific headers required to the upgrade request. Returns the names of all headers that were added. These headers will be used to populate the CONNECTION header.
  - upgradeTo
```
void upgradeTo(io.netty.channel.ChannelHandlerContext ctx,
               FullHttpResponse upgradeResponse)
        throws Exception
```
    Performs an HTTP protocol upgrade from the source codec. This method is responsible for adding all handlers required for the new protocol.
    
    Parameters:
    
    ctx - the context for the current handler.
    
    upgradeResponse - the 101 Switching Protocols response that indicates that the server has switched to this protocol.
    
    Throws:
    
    Exception