| crypto/tls | Package tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446. |
| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/mwitkow/go-conntrack | |
| github.com/mwitkow/go-conntrack/connhelpers | |
| github.com/prometheus/client_golang/prometheus/promhttp | Package promhttp provides tooling around HTTP servers and clients. |
| golang.org/x/net/context/ctxhttp | Package ctxhttp provides helper functions for performing context-aware HTTP requests. |
| golang.org/x/net/trace | Package trace implements tracing of requests and long-lived objects. |
| log | Package log implements a simple logging package. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| net/http | Package http provides HTTP client and server implementations. |
| time | Package time provides functionality for measuring and displaying time. |