com.vaadin.server.communication
Class ServerRpcHandler

java.lang.Object
  com.vaadin.server.communication.ServerRpcHandler

All Implemented Interfaces:

java.io.Serializable

public class ServerRpcHandler
extends java.lang.Object
implements java.io.Serializable

Handles a client-to-server message containing serialized server RPC invocations.

Since:

7.1

Author:

Vaadin Ltd

See Also:

Serialized Form

Field Summary

static char	VAR_BURST_SEPARATOR
static char	VAR_ESCAPE_CHARACTER

Constructor Summary

ServerRpcHandler()

Method Summary

protected void	changeVariables(java.lang.Object source, VariableOwner owner, java.util.Map<java.lang.String,java.lang.Object> m)
protected java.lang.String	getMessage(java.io.Reader reader)
void	handleRpc(UI ui, java.io.Reader reader, VaadinRequest request) Reads JSON containing zero or more serialized RPC calls (including legacy variable changes) and executes the calls.
protected java.lang.String	unescapeBurst(java.lang.String encodedValue) Unescape encoded burst separator characters in a burst received from the client.

Methods inherited from class java.lang.Object

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

Field Detail

VAR_BURST_SEPARATOR

public static final char VAR_BURST_SEPARATOR

See Also:

Constant Field Values

VAR_ESCAPE_CHARACTER

public static final char VAR_ESCAPE_CHARACTER

See Also:

Constant Field Values

Constructor Detail

ServerRpcHandler

public ServerRpcHandler()

Method Detail

handleRpc

public void handleRpc(UI ui,
                      java.io.Reader reader,
                      VaadinRequest request)
               throws java.io.IOException,
                      LegacyCommunicationManager.InvalidUIDLSecurityKeyException,
                      org.json.JSONException

Reads JSON containing zero or more serialized RPC calls (including legacy variable changes) and executes the calls.

Parameters:

ui - The UI receiving the calls. Cannot be null.

reader - The Reader used to read the JSON.

request -

Throws:

java.io.IOException - If reading the message fails.

LegacyCommunicationManager.InvalidUIDLSecurityKeyException - If the received security key does not match the one stored in the session.

org.json.JSONException - If deserializing the JSON fails.

changeVariables

protected void changeVariables(java.lang.Object source,
                               VariableOwner owner,
                               java.util.Map<java.lang.String,java.lang.Object> m)

unescapeBurst

protected java.lang.String unescapeBurst(java.lang.String encodedValue)

Unescape encoded burst separator characters in a burst received from the client. This protects from separator injection attacks.

Parameters:

encodedValue - to decode

Returns:

decoded value

getMessage

protected java.lang.String getMessage(java.io.Reader reader)
                               throws java.io.IOException

Throws:

java.io.IOException