Backards imcompatibilitiy with version 5.3 and previous with the http protocol
due chage on charset encoding
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Key: AMQ-3387
URL: https://issues.apache.org/jira/browse/AMQ-3387
Project: ActiveMQ
Issue Type: Bug
Components: Transport
Affects Versions: 5.5.0, 5.4.2, 5.4.0
Reporter: Marcel Casado
Changes in charset encoding from java modified UTF-8 to standard UTF-8 in class
org.apache.activemq.transport.util.TextWireFormat makes clients and broker
using different versions not compatible when using http transport protocol.
Like a client 5.3 and broker 5.5 can not interchange messages in http transport
protocol or the other way around. Backards compatibility support could be
easily provided with :
public Object unmarshal(DataInput in) throws IOException {
String value;
try {
int length = in.readInt();
byte[] utf8 = new byte[length];
in.readFully(utf8);
value = new String(utf8, "UTF-8");
return unmarshalText(value);
} catch(Exception ex) {
DataByteArrayInputStream dbais = (DataByteArrayInputStream) in;
dbais.restart(0);
value = dbais.readUTF();
return unmarshalText(value);
}
}
and in HttpClientTransport calling unmarshal with a
DataByteArrayInputStream:
DataByteArrayInputStream stream = new
DataByteArrayInputStream(httpMethod.getResponseBody());
Object command = (Object)getTextWireFormat().unmarshal(stream);
With this changes was able to connect legacy clients 5.3 to new 5.5 brokers.
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