How to make an HTTP request via SSL

Hi,
I´m using an instance of the class CL_HTTP_CLIENT to make an HTTP request to a https server. as long as it requires an SSL authentication, it returns an ICM_HTTP_SSL_ERROR error message.
How do I tell my program to ask for user´s certificate, and use it in the http request?
I´m supossed to have hundreds of users online running this application (it´s over SRM 5.0). How can I reach this?
Thanks you very much.
Federico.

Hello Frederico,
>1. By creating a new client, you mean go to "Environment->SSL Client Identitites" in STRUST, right? >Can I use a previously existing one?
I meant to create a new client SSL PSE. By default in a new Netweaver abap system, you have 3 of them : ANONYM, DFAULT and WSSE.
If you need more of them, you can create them with the menu "Go to-->Environment->SSL Client Identitites".
>2. I need this PSE client to have several 'identitites', I mean, to include several certificates from all my >users. Is it possible? If it´s not; how should I do so?
It seems that you want a different certificate per user. These client certificates in STRUST are designes to identify a SAP abap system, not human users. If you have 1000 users, you will not create 1000 certificates in STRUST !
Usually, you use only 2 entries here, one for anonymous HTTPS access and one authenticated HTTPS access. It is unusual to have several different identities for the same abap server. But it might be possible : for exemple, one identity on the intranet and an other one on the Internet.
>3. When I had my new PSE client, and my HTTP RFC destination of type 'G' configured to use that >PSE client, and when in abap I instantiate my http client (using CREATE_BY_DESTINATION method, >from CL_HTTP_CLIENT class): How does SAP knows which certificate to use? Because there will be >several users (hundreds) running this code to retrieve their specific data from a third party server.
>How does SAP knows whom certificate must use?
The certificate used will be the one defined in the HTTP destination.
You still seem to make the confusion between server client certificates and users client certificates.
a users client certificate is stored in the user's PC (or smartcard) and is used for HTTPS connections from the user's browser to the SSL server, not for an HTTPS connection from the ABAP server to another server.
Regards,
Olivier

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