Imports github.com/googollee/go-engine.io/message github.com/googollee/go-engine.io/parser github.com/googollee/go-engine.io/polling github.com/googollee/go-engine.io/transport github.com/googollee/go-engine.io/websocket Standard library imports bytes crypto/md5 encoding/base64 encoding/json errors fmt io net/http sync sync/atomic time