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GUACAMOLE-1048: Use GuacamoleConnectionClosedException to represent explicit connection closure.

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This commit is contained in:
Michael Jumper
2021-05-23 21:14:54 -07:00
parent 0889e4f2d2
commit 307ec9627a
1 changed files with 17 additions and 7 deletions
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24
guacamole-common/src/main/java/org/apache/guacamole/protocol/ConfiguredGuacamoleSocket.java
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@@ -20,6 +20,7 @@
package org.apache.guacamole.protocol;
import java.util.List;
import org.apache.guacamole.GuacamoleConnectionClosedException;
import org.apache.guacamole.GuacamoleException;
import org.apache.guacamole.GuacamoleServerException;
import org.apache.guacamole.io.GuacamoleReader;
@@ -132,11 +133,18 @@ public class ConfiguredGuacamoleSocket extends DelegatingGuacamoleSocket {
* Respects server control instructions that are allowed during the handshake
* phase, namely {@code error} and {@code disconnect}.
*
* @param reader The reader to read instructions from.
* @param opcode The opcode of the instruction we are expecting.
* @return The instruction having the given opcode.
* @throws GuacamoleException If an error occurs while reading, or if
* the expected instruction is not read.
* @param reader
* The reader to read instructions from.
*
* @param opcode
* The opcode of the instruction we are expecting.
*
* @return
* The instruction having the given opcode.
*
* @throws GuacamoleException
* If an error occurs while reading, or if the expected instruction is
* not read.
*/
private GuacamoleInstruction expect(GuacamoleReader reader, String opcode)
throws GuacamoleException {
@@ -146,9 +154,11 @@ public class ConfiguredGuacamoleSocket extends DelegatingGuacamoleSocket {
if (instruction == null)
throw new GuacamoleServerException("End of stream while waiting for \"" + opcode + "\".");
// Handle server control instructions
// Report connection closure if server explicitly disconnects
if ("disconnect".equals(instruction.getOpcode()))
throw new GuacamoleServerException("Server disconnected while waiting for \"" + opcode + "\".");
throw new GuacamoleConnectionClosedException("Server disconnected while waiting for \"" + opcode + "\".");
// Pass through any received errors as GuacamoleExceptions
if ("error".equals(instruction.getOpcode()))
handleReceivedError(instruction);