The OpenSSL library has the compression methods B<COMP_rle()> and (when
especially enabled during compilation) B<COMP_zlib()> available.
+=head1 WARNINGS
+
+Once the identities of the compression methods for the TLS protocol have
+been standardized, the compression API will most likely be changed. Using
+it in the current state is not recommended.
+
=head1 RETURN VALUES
SSL_COMP_add_compression_method() may return the following values:
=over 4
-=item 1
+=item 0
The operation succeeded.
-=item 0
+=item 1
The operation failed. Check the error queue to find out the reason.