Pavel Moravec created QPID-7134:
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Summary: [C++ client] Message::setContent("") does not work
Key: QPID-7134
URL: https://issues.apache.org/jira/browse/QPID-7134
Project: Qpid
Issue Type: Bug
Components: C++ Client
Affects Versions: qpid-cpp-0.34
Reporter: Pavel Moravec
Assignee: Gordon Sim
Message::setContent internally updates just "bytes" property of the Message
object but not the "content" object. That brings problems when trying to reset
content to empty one - original content is still stored in "content" object
property and e.g. an attempt to send this "empty" message sends the message
with original content.
Reproducer (outside a broker, feel free to add receiving initial message from
the broker, or sending the result to it back):
{noformat}
#include <iostream>
#include <qpid/messaging/Message.h>
using namespace std;
using namespace qpid::messaging;
int main(int argc, char* argv[])
{
qpid::types::Variant content("some content");
Message m1(content);
cout << "Message 1: initial content set to \"" << m1.getContent() << "\",
contentSize = " << m1.getContentSize() << endl;
m1.setContent("message 1");
cout << "Message 1: after content set to \"" << m1.getContent() << "\",
contentSize = " << m1.getContentSize() << endl;
m1.setContent(std::string());
cout << "Message 1: after content set to an empty string, the content is
still \"" << m1.getContent() << "\" and contentSize = " << m1.getContentSize()
<< endl;
return 0;
}
{noformat}
That returns:
{noformat}
Message 1: initial content set to "some content", contentSize = 12
Message 1: after content set to "message 1", contentSize = 9
Message 1: after content set to an empty string, the content is still "some
content" and contentSize = 12
{noformat}
See "some content" of size 12 returned after an attempt to empty the message
content. See it is the _original_ content before first setContent called.
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