How to send MIME messages via SMTP using libetpan?

Hello,

I am trying to send a MIME message over SMTP. This MIME message can 
contain several attachments etc.

The problem I have is that MIME writing functions take only file 
descriptors as their output destinations. Right? For instance this one:

	int mailmime_write(FILE * f, int * col,
			   struct mailmime * build_info);

This seems to be somewhat incompatible with SMTP functions:

	int mailsmtp_data_message(mailsmtp * session,
         	                   const char * message,
                 	           size_t size);

The question is: how to send MIME message via SMTP? Do I have to make 
this file descriptor --> string conversion myself?

Thanks.

STF

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