move syscall constants for networking into net space to avoid windows build issue

netdev.go

@@ -5,9 +5,19 @@ import (
 )
 
 const (
+	AF_INET       = 0x2
+	SOCK_STREAM   = 0x1
+	SOCK_DGRAM    = 0x2
+	SOL_SOCKET    = 0x1
+	SO_KEEPALIVE  = 0x9
+	SOL_TCP       = 0x6
+	TCP_KEEPINTVL = 0x5
+	IPPROTO_TCP   = 0x6
+	IPPROTO_UDP   = 0x11
 	// Made up, not a real IP protocol number.  This is used to create a
 	// TLS socket on the device, assuming the device supports mbed TLS.
 	IPPROTO_TLS = 0xFE
+	F_SETFL     = 0x4
 )
 
 // netdev is the current netdev, set by the application with useNetdev()
@@ -31,7 +41,7 @@ func useNetdev(dev netdever) {
 //
 // NOTE: The netdever interface is mirrored in drivers/netdev.go.
 // NOTE: If making changes to this interface, mirror the changes in
-// NOTE: drivers/netdev.go, and visa-versa.
+// NOTE: drivers/netdev.go, and vice-versa.
 
 type netdever interface {
 

tcpsock.go

@@ -12,7 +12,6 @@ import (
 	"io"
 	"net/netip"
 	"strconv"
-	"syscall"
 	"time"
 )
 
@@ -154,7 +153,7 @@ func DialTCP(network string, laddr, raddr *TCPAddr) (*TCPConn, error) {
 		return nil, fmt.Errorf("Sorry, localhost isn't available on Tinygo")
 	}
 
-	fd, err := netdev.Socket(syscall.AF_INET, syscall.SOCK_STREAM, syscall.IPPROTO_TCP)
+	fd, err := netdev.Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
 	if err != nil {
 		return nil, err
 	}
@@ -217,12 +216,12 @@ func (c *TCPConn) SetDeadline(t time.Time) error {
 }
 
 func (c *TCPConn) SetKeepAlive(keepalive bool) error {
-	return netdev.SetSockOpt(c.fd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, keepalive)
+	return netdev.SetSockOpt(c.fd, SOL_SOCKET, SO_KEEPALIVE, keepalive)
 }
 
 func (c *TCPConn) SetKeepAlivePeriod(d time.Duration) error {
 	// Units are 1/2 seconds
-	return netdev.SetSockOpt(c.fd, syscall.SOL_TCP, syscall.TCP_KEEPINTVL, 2*d.Seconds())
+	return netdev.SetSockOpt(c.fd, SOL_TCP, TCP_KEEPINTVL, 2*d.Seconds())
 }
 
 func (c *TCPConn) SetReadDeadline(t time.Time) error {
@@ -266,7 +265,7 @@ func (l *listener) Addr() Addr {
 }
 
 func listenTCP(laddr *TCPAddr) (Listener, error) {
-	fd, err := netdev.Socket(syscall.AF_INET, syscall.SOCK_STREAM, syscall.IPPROTO_TCP)
+	fd, err := netdev.Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
 	if err != nil {
 		return nil, err
 	}

tlssock.go

@@ -12,7 +12,6 @@ import (
 	"internal/itoa"
 	"io"
 	"strconv"
-	"syscall"
 	"time"
 )
 
@@ -58,7 +57,7 @@ func DialTLS(addr string) (*TLSConn, error) {
 		port = 443
 	}
 
-	fd, err := netdev.Socket(syscall.AF_INET, syscall.SOCK_STREAM, IPPROTO_TLS)
+	fd, err := netdev.Socket(AF_INET, SOCK_STREAM, IPPROTO_TLS)
 	if err != nil {
 		return nil, err
 	}

udpsock.go

@@ -12,7 +12,6 @@ import (
 	"io"
 	"net/netip"
 	"strconv"
-	"syscall"
 	"time"
 )
 
@@ -169,7 +168,7 @@ func DialUDP(network string, laddr, raddr *UDPAddr) (*UDPConn, error) {
 		laddr.Port = ephemeralPort()
 	}
 
-	fd, err := netdev.Socket(syscall.AF_INET, syscall.SOCK_DGRAM, syscall.IPPROTO_UDP)
+	fd, err := netdev.Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
 	if err != nil {
 		return nil, err
 	}