| Interface | Description | 
|---|---|
| H2MessageConverter<T extends HttpMessage> | Abstract message converter intended to convert from a list of HTTP/2 headers to object
 representing an HTTP message and from an object representing an HTTP message to a list
 of HTTP/2 headers. | 
| H2TransportMetrics | The point of access to connection statistics. | 
| Class | Description | 
|---|---|
| H2PseudoRequestHeaders | Request pseudo HTTP headers defined by the HTTP/2 specification. | 
| H2PseudoResponseHeaders | Response pseudo HTTP headers defined by the HTTP/2 specification. | 
| Enum | Description | 
|---|---|
| H2Error | Errors codes defined by HTTP/2 specification. | 
| HttpVersionPolicy | HTTP protocol version policy. | 
| Exception | Description | 
|---|---|
| H2ConnectionException | Signals fatal HTTP/2 protocol violation that renders the actual
 HTTP/2 connection unreliable. | 
| H2CorruptFrameException | Signals corrupt HTTP/2 frame. | 
| H2StreamResetException | Signals HTTP/2 protocol error that renders the actual HTTP/2 data stream
 unreliable. | 
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