Module java.net.http
Package java.net.http

Class WebSocketHandshakeException

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.io.IOException
java.net.http.WebSocketHandshakeException
All Implemented Interfaces:
Serializable
public final class WebSocketHandshakeException
extends IOException
Thrown when the opening handshake has failed.
Since:
11
See Also:
Serialized Form

  • Constructor Details

    • WebSocketHandshakeException

      public WebSocketHandshakeException​(HttpResponse<?> response)
      Constructs a WebSocketHandshakeException with the given HttpResponse.
      Parameters:
      response - the HttpResponse that resulted in the handshake failure

  • Method Details

    • getResponse

      public HttpResponse<?> getResponse()
      Returns the server's counterpart of the opening handshake.

      The value may be unavailable (null) if this exception has been serialized and then deserialized.

      API Note:
      The primary purpose of this method is to allow programmatic examination of the reasons behind the failure of the opening handshake. Some of these reasons might allow recovery.
      Returns:
      server response

    • initCause

      public WebSocketHandshakeException initCause​(Throwable cause)
      Description copied from class: Throwable
      Initializes the cause of this throwable to the specified value. (The cause is the throwable that caused this throwable to get thrown.)

      This method can be called at most once. It is generally called from within the constructor, or immediately after creating the throwable. If this throwable was created with Throwable(Throwable) or Throwable(String,Throwable), this method cannot be called even once.

      An example of using this method on a legacy throwable type without other support for setting the cause is: 

       try {
     lowLevelOp();
 } catch (LowLevelException le) {
     throw (HighLevelException)
           new HighLevelException().initCause(le); // Legacy constructor
 }
      Overrides:
      initCause in class Throwable
      Parameters:
      cause - the cause (which is saved for later retrieval by the Throwable.getCause() method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
      Returns:
      a reference to this Throwable instance.