CoyoteAdapter (Apache Tomcat 8.5.57 API Documentation)

org.apache.catalina.connector

## Class CoyoteAdapter

- java.lang.Object
- - org.apache.catalina.connector.CoyoteAdapter

- All Implemented Interfaces:
    Adapter

      public class CoyoteAdapter
      extends Object
      implements Adapter

  Implementation of a request processor which delegates the processing to a Coyote processor.
  Author:
    Craig R. McClanahan, Remy Maucherat

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `ADAPTER_NOTES`
    `protected static boolean` | `ALLOW_BACKSLASH`
    `protected static StringManager` | `sm` The string manager for this package.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `CoyoteAdapter(Connector connector)` Construct a new CoyoteProcessor associated with the specified connector.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `asyncDispatch(Request req, Response res, SocketEvent status)`
    `static boolean` | `checkNormalize(MessageBytes uriMB)` Check that the URI is normalized following character decoding.
    `void` | `checkRecycled(Request req, Response res)` Assert that request and response have been recycled.
    `protected void` | `convertMB(MessageBytes mb)` Character conversion of the a US-ASCII MessageBytes.
    `protected void` | `convertURI(MessageBytes uri, Request request)` Character conversion of the URI.
    `protected static void` | `copyBytes(byte[] b, int dest, int src, int len)` Copy an array of bytes to a different position.
    `String` | `getDomain()` Provide the name of the domain to use to register MBeans for components associated with the connector.
    `void` | `log(Request req, Response res, long time)`
    `static boolean` | `normalize(MessageBytes uriMB)` This method normalizes "\", "//", "/./" and "/../".
    `protected void` | `parsePathParameters(Request req, Request request)` Extract the path parameters from the request.
    `protected void` | `parseSessionCookiesId(Request request)` Parse session id in Cookie.
    `protected void` | `parseSessionSslId(Request request)` Look for SSL session ID if required.
    `protected boolean` | `postParseRequest(Request req, Request request, Response res, Response response)` Perform the necessary processing after the HTTP headers have been parsed to enable the request/response pair to be passed to the start of the container pipeline for processing.
    `boolean` | `prepare(Request req, Response res)` Prepare the given request/response for processing.
    `void` | `service(Request req, Response res)` Call the service method, and notify all listeners

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### ADAPTER_NOTES

          public static final int ADAPTER_NOTES

      See Also:
        Constant Field Values

    - #### ALLOW_BACKSLASH

          protected static final boolean ALLOW_BACKSLASH

    - #### sm

          protected static final StringManager sm

      The string manager for this package.

  - ### Constructor Detail

    - #### CoyoteAdapter

          public CoyoteAdapter(Connector connector)

      Construct a new CoyoteProcessor associated with the specified connector.
      Parameters:
        `connector` - CoyoteConnector that owns this processor

  - ### Method Detail

    - #### asyncDispatch

          public boolean asyncDispatch(Request req,
                              Response res,
                              SocketEvent status)
                                throws Exception

      Specified by:
        `asyncDispatch` in interface `Adapter`
      Throws:
        `Exception`

    - #### service

          public void service(Request req,
                     Response res)
                       throws Exception

      Description copied from interface: `Adapter`
      Call the service method, and notify all listeners
      Specified by:
        `service` in interface `Adapter`
      Parameters:
        `req` - The request object
        `res` - The response object
      Throws:
        `Exception` - if an error happens during handling of the request. Common errors are:
        - IOException if an input/output error occurs and we are processing an included servlet (otherwise it is swallowed and handled by the top level error handler mechanism)
        - ServletException if a servlet throws an exception and we are processing an included servlet (otherwise it is swallowed and handled by the top level error handler mechanism)
        Tomcat should be able to handle and log any other exception ( including runtime exceptions )

    - #### prepare

          public boolean prepare(Request req,
                        Response res)
                          throws IOException,
                                 ServletException

      Description copied from interface: `Adapter`
      Prepare the given request/response for processing. This method requires that the request object has been populated with the information available from the HTTP headers.
      Specified by:
        `prepare` in interface `Adapter`
      Parameters:
        `req` - The request object
        `res` - The response object
      Returns:
        `true` if processing can continue, otherwise `false` in which case an appropriate error will have been set on the response
      Throws:
        `IOException`
        `ServletException`

    - #### log

          public void log(Request req,
                 Response res,
                 long time)

      Specified by:
        `log` in interface `Adapter`

    - #### checkRecycled

          public void checkRecycled(Request req,
                           Response res)

      Description copied from interface: `Adapter`
      Assert that request and response have been recycled. If they have not then log a warning and force a recycle. This method is called as a safety check when a processor is being recycled and may be returned to a pool for reuse.
      Specified by:
        `checkRecycled` in interface `Adapter`
      Parameters:
        `req` - Request
        `res` - Response

    - #### getDomain

          public String getDomain()

      Description copied from interface: `Adapter`
      Provide the name of the domain to use to register MBeans for components associated with the connector.
      Specified by:
        `getDomain` in interface `Adapter`
      Returns:
        The MBean domain name

    - #### postParseRequest

          protected boolean postParseRequest(Request req,
                                 Request request,
                                 Response res,
                                 Response response)
                                      throws IOException,
                                             ServletException

      Perform the necessary processing after the HTTP headers have been parsed to enable the request/response pair to be passed to the start of the container pipeline for processing.
      Parameters:
        `req` - The coyote request object
        `request` - The catalina request object
        `res` - The coyote response object
        `response` - The catalina response object
      Returns:
        `true` if the request should be passed on to the start of the container pipeline, otherwise `false`
      Throws:
        `IOException` - If there is insufficient space in a buffer while processing headers
        `ServletException` - If the supported methods of the target servlet cannot be determined

    - #### parsePathParameters

          protected void parsePathParameters(Request req,
                                 Request request)

      Extract the path parameters from the request. This assumes parameters are of the form /path;name=value;name2=value2/ etc. Currently only really interested in the session ID that will be in this form. Other parameters can safely be ignored.
      Parameters:
        `req` - The Coyote request object
        `request` - The Servlet request object

    - #### parseSessionSslId

          protected void parseSessionSslId(Request request)

      Look for SSL session ID if required. Only look for SSL Session ID if it is the only tracking method enabled.
      Parameters:
        `request` - The Servlet request object

    - #### parseSessionCookiesId

          protected void parseSessionCookiesId(Request request)

      Parse session id in Cookie.
      Parameters:
        `request` - The Servlet request object

    - #### convertURI

          protected void convertURI(MessageBytes uri,
                        Request request)
                             throws IOException

      Character conversion of the URI.
      Parameters:
        `uri` - MessageBytes object containing the URI
        `request` - The Servlet request object
      Throws:
        `IOException` - if a IO exception occurs sending an error to the client

    - #### convertMB

          protected void convertMB(MessageBytes mb)

      Character conversion of the a US-ASCII MessageBytes.
      Parameters:
        `mb` - The MessageBytes instance containing the bytes that should be converted to chars

    - #### normalize

          public static boolean normalize(MessageBytes uriMB)

      This method normalizes "\", "//", "/./" and "/../".
      Parameters:
        `uriMB` - URI to be normalized
      Returns:
        `false` if normalizing this URI would require going above the root, or if the URI contains a null byte, otherwise `true`

    - #### checkNormalize

          public static boolean checkNormalize(MessageBytes uriMB)

      Check that the URI is normalized following character decoding. This method checks for "\", 0, "//", "/./" and "/../".
      Parameters:
        `uriMB` - URI to be checked (should be chars)
      Returns:
        `false` if sequences that are supposed to be normalized are still present in the URI, otherwise `true`

    - #### copyBytes

          protected static void copyBytes(byte[] b,
                       int dest,
                       int src,
                       int len)

      Copy an array of bytes to a different position. Used during normalization.
      Parameters:
        `b` - The bytes that should be copied
        `dest` - Destination offset
        `src` - Source offset
        `len` - Length

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