TUN-4597: Add a QUIC server skeleton

- Added a QUIC server to accept streams
- Unit test for this server also tests ALPN
- Temporary echo capability for HTTP ConnectionType

vendor/golang.org/x/net/internal/socket/cmsghdr.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/cmsghdr_bsd.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || netbsd || openbsd
 // +build aix darwin dragonfly freebsd netbsd openbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/cmsghdr_linux_32bit.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm || mips || mipsle || 386) && linux
 // +build arm mips mipsle 386
 // +build linux
 

vendor/golang.org/x/net/internal/socket/cmsghdr_linux_64bit.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
 // +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
 // +build linux
 

vendor/golang.org/x/net/internal/socket/cmsghdr_solaris_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build amd64
-// +build solaris
+//go:build amd64 && solaris
+// +build amd64,solaris
 
 package socket
 

vendor/golang.org/x/net/internal/socket/cmsghdr_stub.go

@@ -2,13 +2,24 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !zos
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!zos
 
 package socket
 
-type cmsghdr struct{}
+func controlHeaderLen() int {
+	return 0
+}
 
-const sizeofCmsghdr = 0
+func controlMessageLen(dataLen int) int {
+	return 0
+}
+
+func controlMessageSpace(dataLen int) int {
+	return 0
+}
+
+type cmsghdr struct{}
 
 func (h *cmsghdr) len() int { return 0 }
 func (h *cmsghdr) lvl() int { return 0 }

vendor/golang.org/x/net/internal/socket/cmsghdr_unix.go

@@ -0,0 +1,22 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package socket
+
+import "golang.org/x/sys/unix"
+
+func controlHeaderLen() int {
+	return unix.CmsgLen(0)
+}
+
+func controlMessageLen(dataLen int) int {
+	return unix.CmsgLen(dataLen)
+}
+
+func controlMessageSpace(dataLen int) int {
+	return unix.CmsgSpace(dataLen)
+}

vendor/golang.org/x/net/internal/socket/cmsghdr_zos_s390x.go

@@ -0,0 +1,25 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import "syscall"
+
+func (h *cmsghdr) set(l, lvl, typ int) {
+	h.Len = int32(l)
+	h.Level = int32(lvl)
+	h.Type = int32(typ)
+}
+
+func controlHeaderLen() int {
+	return syscall.CmsgLen(0)
+}
+
+func controlMessageLen(dataLen int) int {
+	return syscall.CmsgLen(dataLen)
+}
+
+func controlMessageSpace(dataLen int) int {
+	return syscall.CmsgSpace(dataLen)
+}

vendor/golang.org/x/net/internal/socket/error_unix.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/iovec_32bit.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm || mips || mipsle || 386) && (darwin || dragonfly || freebsd || linux || netbsd || openbsd)
 // +build arm mips mipsle 386
 // +build darwin dragonfly freebsd linux netbsd openbsd
 

vendor/golang.org/x/net/internal/socket/iovec_64bit.go

@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && (aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || zos)
 // +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
-// +build aix darwin dragonfly freebsd linux netbsd openbsd
+// +build aix darwin dragonfly freebsd linux netbsd openbsd zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/iovec_solaris_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build amd64
-// +build solaris
+//go:build amd64 && solaris
+// +build amd64,solaris
 
 package socket
 

vendor/golang.org/x/net/internal/socket/iovec_stub.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !zos
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/mmsghdr_stub.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !aix && !linux && !netbsd
 // +build !aix,!linux,!netbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/mmsghdr_unix.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || linux || netbsd
 // +build aix linux netbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/msghdr_bsd.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || netbsd || openbsd
 // +build aix darwin dragonfly freebsd netbsd openbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/msghdr_bsdvar.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || netbsd
 // +build aix darwin dragonfly freebsd netbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/msghdr_linux_32bit.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm || mips || mipsle || 386) && linux
 // +build arm mips mipsle 386
 // +build linux
 

vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
 // +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
 // +build linux
 

vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build amd64
-// +build solaris
+//go:build amd64 && solaris
+// +build amd64,solaris
 
 package socket
 

vendor/golang.org/x/net/internal/socket/msghdr_stub.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !zos
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/msghdr_zos_s390x.go

@@ -0,0 +1,36 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build s390x && zos
+// +build s390x,zos
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
+	for i := range vs {
+		vs[i].set(bs[i])
+	}
+	if len(vs) > 0 {
+		h.Iov = &vs[0]
+		h.Iovlen = int32(len(vs))
+	}
+	if len(oob) > 0 {
+		h.Control = (*byte)(unsafe.Pointer(&oob[0]))
+		h.Controllen = uint32(len(oob))
+	}
+	if sa != nil {
+		h.Name = (*byte)(unsafe.Pointer(&sa[0]))
+		h.Namelen = uint32(len(sa))
+	}
+}
+
+func (h *msghdr) controllen() int {
+	return int(h.Controllen)
+}
+
+func (h *msghdr) flags() int {
+	return int(h.Flags)
+}

vendor/golang.org/x/net/internal/socket/norace.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !race
 // +build !race
 
 package socket

vendor/golang.org/x/net/internal/socket/race.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build race
 // +build race
 
 package socket

vendor/golang.org/x/net/internal/socket/rawconn.go

@@ -17,18 +17,45 @@ type Conn struct {
 	c       syscall.RawConn
 }
 
+// tcpConn is an interface implemented by net.TCPConn.
+// It can be used for interface assertions to check if a net.Conn is a TCP connection.
+type tcpConn interface {
+	SyscallConn() (syscall.RawConn, error)
+	SetLinger(int) error
+}
+
+var _ tcpConn = (*net.TCPConn)(nil)
+
+// udpConn is an interface implemented by net.UDPConn.
+// It can be used for interface assertions to check if a net.Conn is a UDP connection.
+type udpConn interface {
+	SyscallConn() (syscall.RawConn, error)
+	ReadMsgUDP(b, oob []byte) (n, oobn, flags int, addr *net.UDPAddr, err error)
+}
+
+var _ udpConn = (*net.UDPConn)(nil)
+
+// ipConn is an interface implemented by net.IPConn.
+// It can be used for interface assertions to check if a net.Conn is an IP connection.
+type ipConn interface {
+	SyscallConn() (syscall.RawConn, error)
+	ReadMsgIP(b, oob []byte) (n, oobn, flags int, addr *net.IPAddr, err error)
+}
+
+var _ ipConn = (*net.IPConn)(nil)
+
 // NewConn returns a new raw connection.
 func NewConn(c net.Conn) (*Conn, error) {
 	var err error
 	var cc Conn
 	switch c := c.(type) {
-	case *net.TCPConn:
+	case tcpConn:
 		cc.network = "tcp"
 		cc.c, err = c.SyscallConn()
-	case *net.UDPConn:
+	case udpConn:
 		cc.network = "udp"
 		cc.c, err = c.SyscallConn()
-	case *net.IPConn:
+	case ipConn:
 		cc.network = "ip"
 		cc.c, err = c.SyscallConn()
 	default:

vendor/golang.org/x/net/internal/socket/rawconn_mmsg.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux
 // +build linux
 
 package socket

vendor/golang.org/x/net/internal/socket/rawconn_msg.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || windows || zos
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows zos
 
 package socket
 
@@ -24,7 +25,7 @@ func (c *Conn) recvMsg(m *Message, flags int) error {
 	var n int
 	fn := func(s uintptr) bool {
 		n, operr = recvmsg(s, &h, flags)
-		if operr == syscall.EAGAIN {
+		if operr == syscall.EAGAIN || operr == syscall.EWOULDBLOCK {
 			return false
 		}
 		return true
@@ -61,7 +62,7 @@ func (c *Conn) sendMsg(m *Message, flags int) error {
 	var n int
 	fn := func(s uintptr) bool {
 		n, operr = sendmsg(s, &h, flags)
-		if operr == syscall.EAGAIN {
+		if operr == syscall.EAGAIN || operr == syscall.EWOULDBLOCK {
 			return false
 		}
 		return true

vendor/golang.org/x/net/internal/socket/rawconn_nommsg.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !linux
 // +build !linux
 
 package socket

vendor/golang.org/x/net/internal/socket/rawconn_nomsg.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows && !zos
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows,!zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/socket.go

@@ -90,17 +90,9 @@ func (o *Option) SetInt(c *Conn, v int) error {
 	return o.set(c, b)
 }
 
-func controlHeaderLen() int {
-	return roundup(sizeofCmsghdr)
-}
-
-func controlMessageLen(dataLen int) int {
-	return roundup(sizeofCmsghdr) + dataLen
-}
-
 // ControlMessageSpace returns the whole length of control message.
 func ControlMessageSpace(dataLen int) int {
-	return roundup(sizeofCmsghdr) + roundup(dataLen)
+	return controlMessageSpace(dataLen)
 }
 
 // A ControlMessage represents the head message in a stream of control

vendor/golang.org/x/net/internal/socket/sys.go

@@ -9,13 +9,8 @@ import (
 	"unsafe"
 )
 
-var (
-	// NativeEndian is the machine native endian implementation of
-	// ByteOrder.
-	NativeEndian binary.ByteOrder
-
-	kernelAlign int
-)
+// NativeEndian is the machine native endian implementation of ByteOrder.
+var NativeEndian binary.ByteOrder
 
 func init() {
 	i := uint32(1)
@@ -25,9 +20,4 @@ func init() {
 	} else {
 		NativeEndian = binary.BigEndian
 	}
-	kernelAlign = probeProtocolStack()
-}
-
-func roundup(l int) int {
-	return (l + kernelAlign - 1) &^ (kernelAlign - 1)
 }

vendor/golang.org/x/net/internal/socket/sys_bsd.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || openbsd
 // +build aix darwin dragonfly freebsd openbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_bsdvar.go

@@ -1,23 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build aix freebsd netbsd openbsd
-
-package socket
-
-import (
-	"runtime"
-	"unsafe"
-)
-
-func probeProtocolStack() int {
-	if (runtime.GOOS == "netbsd" || runtime.GOOS == "openbsd") && runtime.GOARCH == "arm" {
-		return 8
-	}
-	if runtime.GOOS == "aix" {
-		return 1
-	}
-	var p uintptr
-	return int(unsafe.Sizeof(p))
-}

vendor/golang.org/x/net/internal/socket/sys_const_unix.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_const_zos.go

@@ -0,0 +1,18 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build zos
+// +build zos
+
+package socket
+
+import "syscall"
+
+const (
+	sysAF_UNSPEC = syscall.AF_UNSPEC
+	sysAF_INET   = syscall.AF_INET
+	sysAF_INET6  = syscall.AF_INET6
+
+	sysSOCK_RAW = syscall.SOCK_RAW
+)

vendor/golang.org/x/net/internal/socket/sys_darwin.go

@@ -1,7 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package socket
-
-func probeProtocolStack() int { return 4 }

vendor/golang.org/x/net/internal/socket/sys_dragonfly.go

@@ -1,32 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package socket
-
-import (
-	"sync"
-	"syscall"
-	"unsafe"
-)
-
-// See version list in https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/param.h
-var (
-	osreldateOnce sync.Once
-	osreldate     uint32
-)
-
-// First __DragonFly_version after September 2019 ABI changes
-// http://lists.dragonflybsd.org/pipermail/users/2019-September/358280.html
-const _dragonflyABIChangeVersion = 500705
-
-func probeProtocolStack() int {
-	osreldateOnce.Do(func() { osreldate, _ = syscall.SysctlUint32("kern.osreldate") })
-	var p uintptr
-	if int(unsafe.Sizeof(p)) == 8 && osreldate >= _dragonflyABIChangeVersion {
-		return int(unsafe.Sizeof(p))
-	}
-	// 64-bit Dragonfly before the September 2019 ABI changes still requires
-	// 32-bit aligned access to network subsystem.
-	return 4
-}

vendor/golang.org/x/net/internal/socket/sys_linkname.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || (go1.12 && darwin)
 // +build aix go1.12,darwin
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_linux.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux && !s390x && !386
 // +build linux,!s390x,!386
 
 package socket
@@ -11,11 +12,6 @@ import (
 	"unsafe"
 )
 
-func probeProtocolStack() int {
-	var p uintptr
-	return int(unsafe.Sizeof(p))
-}
-
 func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
 	n, _, errno := syscall.Syscall6(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
 	return int(n), errnoErr(errno)

vendor/golang.org/x/net/internal/socket/sys_linux_386.go

@@ -9,8 +9,6 @@ import (
 	"unsafe"
 )
 
-func probeProtocolStack() int { return 4 }
-
 const (
 	sysSETSOCKOPT = 0xe
 	sysGETSOCKOPT = 0xf

vendor/golang.org/x/net/internal/socket/sys_linux_riscv64.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build riscv64
 // +build riscv64
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_linux_s390x.go

@@ -9,8 +9,6 @@ import (
 	"unsafe"
 )
 
-func probeProtocolStack() int { return 8 }
-
 const (
 	sysSETSOCKOPT = 0xe
 	sysGETSOCKOPT = 0xf

vendor/golang.org/x/net/internal/socket/sys_posix.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || windows || zos
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows zos
 
 package socket
 

vendor/golang.org/x/net/internal/socket/sys_solaris.go

@@ -5,21 +5,10 @@
 package socket
 
 import (
-	"runtime"
 	"syscall"
 	"unsafe"
 )
 
-func probeProtocolStack() int {
-	switch runtime.GOARCH {
-	case "amd64":
-		return 4
-	default:
-		var p uintptr
-		return int(unsafe.Sizeof(p))
-	}
-}
-
 //go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
 //go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
 //go:cgo_import_dynamic libc___xnet_recvmsg __xnet_recvmsg "libsocket.so"

vendor/golang.org/x/net/internal/socket/sys_stub.go

@@ -2,15 +2,12 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows && !zos
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows,!zos
 
 package socket
 
-import (
-	"net"
-	"runtime"
-	"unsafe"
-)
+import "net"
 
 const (
 	sysAF_UNSPEC = 0x0
@@ -20,16 +17,6 @@ const (
 	sysSOCK_RAW = 0x3
 )
 
-func probeProtocolStack() int {
-	switch runtime.GOARCH {
-	case "amd64p32", "mips64p32":
-		return 4
-	default:
-		var p uintptr
-		return int(unsafe.Sizeof(p))
-	}
-}
-
 func marshalInetAddr(ip net.IP, port int, zone string) []byte {
 	return nil
 }

vendor/golang.org/x/net/internal/socket/sys_unix.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build dragonfly || freebsd || (linux && !s390x && !386) || netbsd || openbsd
 // +build dragonfly freebsd linux,!s390x,!386 netbsd openbsd
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_zos_s390x.go

@@ -1,9 +1,7 @@
-// Copyright 2018 The Go Authors. All rights reserved.
+// Copyright 2020 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !go1.12
-
 package socket
 
 import (
@@ -11,23 +9,30 @@ import (
 	"unsafe"
 )
 
+func syscall_syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
+func syscall_syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
+
+func probeProtocolStack() int {
+	return 4 // sizeof(int) on GOOS=zos GOARCH=s390x
+}
+
 func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
 	l := uint32(len(b))
-	_, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+	_, _, errno := syscall_syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
 	return int(l), errnoErr(errno)
 }
 
 func setsockopt(s uintptr, level, name int, b []byte) error {
-	_, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+	_, _, errno := syscall_syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
 	return errnoErr(errno)
 }
 
 func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := syscall.Syscall(syscall.SYS_RECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+	n, _, errno := syscall_syscall(syscall.SYS___RECVMSG_A, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
 	return int(n), errnoErr(errno)
 }
 
 func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := syscall.Syscall(syscall.SYS_SENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+	n, _, errno := syscall_syscall(syscall.SYS___SENDMSG_A, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
 	return int(n), errnoErr(errno)
 }

vendor/golang.org/x/net/internal/socket/sys_zos_s390x.s

@@ -0,0 +1,11 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+TEXT ·syscall_syscall(SB),NOSPLIT,$0
+        JMP     syscall·_syscall(SB)
+
+TEXT ·syscall_syscall6(SB),NOSPLIT,$0
+        JMP     syscall·_syscall6(SB)

vendor/golang.org/x/net/internal/socket/zsys_aix_ppc64.go

@@ -2,6 +2,7 @@
 // cgo -godefs defs_aix.go
 
 // Added for go1.11 compatibility
+//go:build aix
 // +build aix
 
 package socket
@@ -51,9 +52,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_darwin_386.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_darwin_amd64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_darwin_arm.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_darwin_arm64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_dragonfly_amd64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_freebsd_386.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_freebsd_amd64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_linux_386.go

@@ -45,9 +45,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_linux_amd64.go

@@ -48,9 +48,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x38
-	sizeofCmsghdr = 0x10
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x38
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_linux_arm.go

@@ -48,8 +48,6 @@ const (
 	sizeofIovec  = 0x8
 	sizeofMsghdr = 0x1c
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_arm64.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_mips.go

@@ -48,8 +48,6 @@ const (
 	sizeofIovec  = 0x8
 	sizeofMsghdr = 0x1c
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_mips64.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_mips64le.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_mipsle.go

@@ -48,8 +48,6 @@ const (
 	sizeofIovec  = 0x8
 	sizeofMsghdr = 0x1c
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64le.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_riscv64.go

@@ -1,6 +1,7 @@
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs defs_linux.go
 
+//go:build riscv64
 // +build riscv64
 
 package socket
@@ -52,8 +53,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_linux_s390x.go

@@ -51,8 +51,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x38
 
-	sizeofCmsghdr = 0x10
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_netbsd_386.go

@@ -50,8 +50,6 @@ const (
 	sizeofIovec  = 0x8
 	sizeofMsghdr = 0x1c
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_netbsd_amd64.go

@@ -53,8 +53,6 @@ const (
 	sizeofIovec  = 0x10
 	sizeofMsghdr = 0x30
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm.go

@@ -50,8 +50,6 @@ const (
 	sizeofIovec  = 0x8
 	sizeofMsghdr = 0x1c
 
-	sizeofCmsghdr = 0xc
-
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c
 )

vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm64.go

@@ -50,9 +50,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_openbsd_386.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_openbsd_amd64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm.go

@@ -42,9 +42,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x8
-	sizeofMsghdr  = 0x1c
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x8
+	sizeofMsghdr = 0x1c
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm64.go

@@ -44,9 +44,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x1c

vendor/golang.org/x/net/internal/socket/zsys_openbsd_mips64.go

@@ -0,0 +1,50 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package socket
+
+type iovec struct {
+	Base *byte
+	Len  uint64
+}
+
+type msghdr struct {
+	Name       *byte
+	Namelen    uint32
+	Iov        *iovec
+	Iovlen     uint32
+	Control    *byte
+	Controllen uint32
+	Flags      int32
+}
+
+type cmsghdr struct {
+	Len   uint32
+	Level int32
+	Type  int32
+}
+
+type sockaddrInet struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type sockaddrInet6 struct {
+	Len      uint8
+	Family   uint8
+	Port     uint16
+	Flowinfo uint32
+	Addr     [16]byte /* in6_addr */
+	Scope_id uint32
+}
+
+const (
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
+
+	sizeofSockaddrInet  = 0x10
+	sizeofSockaddrInet6 = 0x1c
+)

vendor/golang.org/x/net/internal/socket/zsys_solaris_amd64.go

@@ -43,9 +43,8 @@ type sockaddrInet6 struct {
 }
 
 const (
-	sizeofIovec   = 0x10
-	sizeofMsghdr  = 0x30
-	sizeofCmsghdr = 0xc
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x30
 
 	sizeofSockaddrInet  = 0x10
 	sizeofSockaddrInet6 = 0x20

vendor/golang.org/x/net/internal/socket/zsys_zos_s390x.go

@@ -0,0 +1,32 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+type iovec struct {
+	Base *byte
+	Len  uint64
+}
+
+type msghdr struct {
+	Name       *byte
+	Iov        *iovec
+	Control    *byte
+	Flags      int32
+	Namelen    uint32
+	Iovlen     int32
+	Controllen uint32
+}
+
+type cmsghdr struct {
+	Len   int32
+	Level int32
+	Type  int32
+}
+
+const (
+	sizeofCmsghdr       = 12
+	sizeofSockaddrInet  = 16
+	sizeofSockaddrInet6 = 28
+)