Incorrect content-type and soapaction HTTP client headers

HTTP headers content-type and soapaction seems not to be set correctly, according to how and if axis2_options_set_soap_version is called.

With:

No axis2_options_set_soap_version call or
axis2_options_set_soap_version(axOptions, axEnv, AXIOM_SOAP_11)

I get:

content-type: application/soap+xml;charset=UTF-8;action="helloAction";

With:

axis2_options_set_soap_version(axOptions, axEnv, AXIOM_SOAP_12)

I get:

content-type: text/xml;charset=UTF-8
soapaction: "helloAction"

No special option is written in axis2.xml.
MTOM and REST default options have been commented out from axis2.xml.

Behaviour looks like not compliant with SOAP 1.1 and 1.2 requirements about HTTP headers.