/sap/bc/soap/rfc/ returns invalid HTTP response if short dump

[Sandra_Rossi]

I have activated the ICF service /sap/bc/soap/rfc/ so that to call RFC-enabled function modules generically without generating a specific Service for each function module I need to call (I know, it's "bad").

If a short dump happens, or even an Error or Abort message, the ABAP kernel takes the control to send an HTTP response which violates the HTTP protocol.

e.g.

FUNCTION z_http_test.
  MESSAGE 'test' TYPE 'X'.
ENDFUNCTION.

The response contains "content type" added by the ABAP kernel which violates the HTTP protocol (space is forbidden) - This can be an issue in software reading this response -- e.g C# library System.Net.Http fails with message "An error occurred while sending the request. The server committed a protocol violation. Section=ResponseHeader Detail=CR must be followed by LF" / the reason is misleading because it's not about CR and LF, it's about the invalid space in "content type" / in C# it's very difficult to capture the HTTP response as explanation here -- :

HTTP/1.1 500 Internal Server Error
Content-Type: text/html; charset=utf-8
Content-Length: 537
connection: close
content type: text/xml; charset=utf-8        <======= violates the HTTP protocol

<?xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
  <SOAP-ENV:Body>
    <SOAP-ENV:Fault>
      <faultcode> SOAP-ENV:Client </faultcode>
      <faultstring> Internal Server Error </faultstring>
      <detail>
        <rfc:Error xmlns:rfc="urn:sap-com:document:sap:soap:functions">
          <type>RABAX_STATE</type>
          <message>The current application has triggered a termination with a short dump.</message>
        </rfc:Error>
      </detail>
    </SOAP-ENV:Fault>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

I tested it with kernels 753 SP300 and 785 SP100 (ABAP 7.52 and 7.56), still same error. No SAP note found.

[Sandra_Rossi]

I didn't find a solution in SAP to fix the faulty behavior of the kernel. No SAP note found.

In case I get such an error in the C# program, I know that I need to look at SAP short dumps (ST22), and possibly use the ICF Recorder (SICF > Edit > Recorder > Activate > select Request + Response) if needed to see the exact response.