"TLS/SSL/GZIP/PNG/XML"
all of these are part of the go standard libs, and gets regularry updated with the language.
tls and ssl: https://golang.org/pkg/crypto/tls/ gzip: https://golang.org/pkg/compress/gzip/ png: https://golang.org/pkg/image/png/ xml: https://golang.org/pkg/encoding/xml/
since golang also has built in support for fuzzing in the toolchain, the standard parts are quite battle tested already.
if you study their sourcecode you will also find Benchmark functions, that you can use to benchmark the implementations (go test -bench ./...)