While sending out an HTTP event, instead of using the Event.sendEvent() function, use the catalog functions under HTTP. For example, use HTTP.sendRequest() to send the request. The URL for the endpoint is passed by the first parameter of the function.
Object connectionInfo_1 = HTTP.ConnectionInfo.createHTTPConnectionInfo(false);
String requestURL = "http://localhost:9090/Channels/HTTPChannel/setInfo";
Events.returnEmpInfoEvent res = HTTP.sendRequest(requestURL, setempinfoevent, "/Events/returnEmpInfoEvent", 60000, connectionInfo_1);