bytes | Package bytes implements functions for the manipulation of byte slices. |
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. |
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. |
os | Package os provides a platform-independent interface to operating system functionality. |
sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |