Call a webservice in abap from an old system (sap_basis 620)

Question

2 - I tried to manage the authentication via abap code: before the call to RECEIVE, I simply inserted this few lines of code:
HTTP_CLIENT->PROPERTYTYPE_LOGON_POPUP = HTTP_CLIENT->CO_DISABLED.
CALL METHOD HTTP_CLIENT->AUTHENTICATE
    EXPORTING
      PROXY_AUTHENTICATION = ' '
      USERNAME             = 'username'
      PASSWORD             = 'password'.
where username and password are obviously the ones that leads to a positive authentication via web browser. Again, I get in output an error 401 Unauthorized due probably to a login procedure error.
Can anyone help me with this task? Thanks in advance
EDIT: sorry for the double post, I wasn't able to get a decent text output in a single message so I had to split the original message in two..

Answer 1

Hi Matteo,
               I had faced a similar issue when I tried to consume a external web-service from SAP(4.7 with WAS 6.20). But, there was a difference that, there were no authentication required while accessing from a browser, as you have mentioned. So, my solution probably won't work in your case.
Anyways I thought, I should share it. I solved the issue by changing the HTTP proxy settings in transaction SICF(Goto-->Http Proxy). In my case actually I solved the issue by removing the Http proxy settings completely(direct connection). For you I think, you have to probably use the USERID/PASSWORD for the Http proxy.
I may be wrong, just check it out.
Regards
Barada