| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/coder/websocket | |
| github.com/coder/websocket/internal/test/xrand | |
| github.com/coder/websocket/internal/xsync | |
| io | Package io provides basic interfaces to I/O primitives. |
| time | Package time provides functionality for measuring and displaying time. |