ServerTransportFilter (grpc-all 1.63.0 API)

java.lang.Object
- io.grpc.ServerTransportFilter

```
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/2132")
public abstract class ServerTransportFilter
extends Object
```
Listens on server transport life-cycle events, with the capability to read and/or change transport attributes. Attributes returned by this filter will be merged into ServerCall.getAttributes().
Multiple filters maybe registered to a server, in which case the output of a filter is the input of the next filter. For example, what returned by transportReady(io.grpc.Attributes) of a filter is passed to the same method of the next filter, and the last filter's return value is the effective transport attributes.
Grpc defines commonly used attributes.

Constructor Summary

Constructors
Constructor Description

ServerTransportFilter()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Attributes`	`transportReady(Attributes transportAttrs)`	Called when a transport is ready to process streams.
`void`	`transportTerminated(Attributes transportAttrs)`	Called when a transport is terminated.

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

- Constructor Detail
  - ServerTransportFilter
```
public ServerTransportFilter()
```
- Method Detail
  - transportReady
```
public Attributes transportReady(Attributes transportAttrs)
```
    Called when a transport is ready to process streams. All necessary handshakes, e.g., TLS handshake, are done at this point.
    Note the implementation should always inherit the passed-in attributes using Attributes.newBuilder(transportAttrs), instead of creating one from scratch.
    
    Parameters:
    
    transportAttrs - current transport attributes
    
    Returns:
    
    new transport attributes. Default implementation returns the passed-in attributes intact.
  - transportTerminated
```
public void transportTerminated(Attributes transportAttrs)
```
    Called when a transport is terminated. Default implementation is no-op.
    
    Parameters:
    
    transportAttrs - the effective transport attributes, which is what returned by transportReady(io.grpc.Attributes) of the last executed filter.