# Package org.apache.coyote.http11

- Interface Summary
  Interface | Description
  --- | ---
  HttpOutputBuffer |
  InputFilter | Input filter interface.
  OutputFilter | Output filter.

- Class Summary
  Class | Description
  --- | ---
  AbstractHttp11JsseProtocol<S> |
  AbstractHttp11Protocol<S> |
  Constants | Constants.
  Http11AprProtocol | Deprecated. The APR/Native Connector will be removed in Tomcat 10.1.x onwards.
  Http11InputBuffer | InputBuffer for HTTP that provides request header parsing as well as transfer encoding.
  Http11Nio2Protocol | HTTP/1.1 protocol implementation using NIO2.
  Http11NioProtocol | Abstract the protocol implementation, including threading, etc.
  Http11OutputBuffer | Provides buffering for the HTTP headers (allowing responses to be reset before they have been committed) and the link to the Socket for writing the headers (once committed) and the response body.
  Http11Processor |
  Http11Protocol | Deprecated. This class will be removed in Tomcat 9.

- Exception Summary
  Exception | Description
  --- | ---
  HeadersTooLargeException | Exception used to mark the specific error condition of the HTTP headers exceeding the maximum permitted size.