You should try reading the source code and you will get your answer. NewReader[0] calls Reset[1], which calls readHeader[2], which the name should tell you what

You should try reading the source code and you will get your answer. NewReader[0] calls Reset[1], which calls readHeader[2], which the name should tell you what its doing. --- 0: https://github.com/golang/go/blob/go1.21.3/src/compress/gzip/gunzip.go#L94 https://github.com/golang/go/blob/go1.21.3/src/compress/gzip... 1: https://github.com/golang/go/blob/go1.21.3/src/compress/gzip/gunzip.go#L113 https://github.com/golang/go/blob/go1.21.3/src/compress/gzip... 2: https://github.com/golang/go/blob/go1.21.3/src/compress/gzip/gunzip.go#L174 https://github.com/golang/go/blob/go1.21.3/src/compress/gzip...