Added HV Socket known IDs, Dial, bug fixes

Added:
* Well-know Hyper-V VMIDs for parents, children, and loopback.
* VSock interop service GUID.
* `Dial()` and `DialContext()` to dial a specific Hyper-V socket at a
  known address (along with a corresponding `HvsockDialer` struct.

Bug fixes:
* Dial (and Listen) now properly initialize and set properties of their
  sockets after ConnectEx (and AcceptEx).
* The `socketError` used by `bind` was incorrect, it should be `int32(-1)`,
  not `uintptr(^0)`

Created a `sockets` package, currently only with syscalls to `Bind`,
`ConnectEx` and `GetSockName`, bypassing `syscall/windows` restrictions
on the types that can do so.

Upgraded to go v1.17 to use `unsafe.Slice()`.

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

.github/workflows/ci.yml

@@ -9,6 +9,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
+        with:
+          go-version: '^1.17.0'
       - run: go test -gcflags=all=-d=checkptr -v ./...
 
   build:
@@ -17,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '^1.15.0'
+          go-version: '^1.17.0'
 
       - run: go build ./pkg/etw/sample/
       - run: go build ./tools/etw-provider-gen/

.gitignore

@@ -1 +1,3 @@
-*.exe
+.vscode/
+
+*.exe

go.mod

@@ -1,6 +1,6 @@
 module github.com/Microsoft/go-winio
 
-go 1.13
+go 1.17
 
 require (
 	github.com/sirupsen/logrus v1.7.0