Unexpected SQUID_X509_V_ERR_DOMAIN_MISMATCH errors while accessing sites with valid...

Unexpected SQUID_X509_V_ERR_DOMAIN_MISMATCH errors while accessing sites with valid certificates

A "const char *" pointer retrieved using the SBuf::c_str() method may attached
to an SSL object using the SSL_set_ex_data method as server name used to
validate server certificates. This pointer may become invalid, causing
the SQUID_X509_V_ERR_DOMAIN_MISMATCH errors.

This patch changes the type of the ssl_ex_index_server index used with the
SSL_set_ex_data function to be an SBuf object.

This is a Measurement Factory project