| golang.org/x/net/http/httpproxy | Package httpproxy provides support for HTTP proxy determination based on environment variables, as provided by net/http's ProxyFromEnvironment function. |
| golang.org/x/sys/windows | Package windows contains an interface to the low-level operating system primitives. |
| golang.org/x/sys/windows/registry | Package registry provides access to the Windows registry. |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| syscall | Package syscall contains an interface to the low-level operating system primitives. |
| unicode/utf16 | Package utf16 implements encoding and decoding of UTF-16 sequences. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |