Sets up automatic SSL certificate trust handling for soup_message using the trust data stored in source's
WebDAV extension.
If soup_message is about to be sent on an SSL connection with an invalid certificate, the code checks if the WebDAV
extension already has a trust response for that certificate and verifies it with
verify_ssl_trust. If the verification fails, then the soup_message
send also fails.
This works by connecting to the "network-event" signal on soup_message and connecting to the "accept-certificate" signal on
each TlsConnection for which soup_message reports a
TLS_HANDSHAKING event. These handlers are torn down
automatically when soup_message is disposed. This process is not thread-safe; it is sufficient for safety if all use of
soup_message's session and the disposal of soup_message occur in the same thread.
| soup_message |
a Message about to be sent to the source |
| source |
an Source that uses WebDAV |