AddHeader Method
Adds a custom header to send with outgoing messages.
Syntax
public void addHeader(String key, String value);
Remarks
This method is used to add user-defined headers to the list of headers held by the Headers collection property.
When SendMessage or SendData is called, all headers in the Headers collection property are added to the outgoing message.
Note that the STOMP specification defines a number of standard headers necessary for implementing the STOMP protocol. When constructing an outgoing message, the component silently ignores any user-defined headers that are already set by the component.