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net: simplify dial

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R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12884044
This commit is contained in:
Mikio Hara 2013-08-15 05:53:53 +09:00
parent 3b4da67ee3
commit 88411547d4
1 changed files with 6 additions and 10 deletions
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16
src/pkg/net/dial.go
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@ -146,30 +146,26 @@ func (d *Dialer) Dial(network, address string) (Conn, error) {
return resolveAndDial(network, address, d.LocalAddr, d.deadline()) return resolveAndDial(network, address, d.LocalAddr, d.deadline())
} }
func dial(net, addr string, la, ra Addr, deadline time.Time) (c Conn, err error) { func dial(net, addr string, la, ra Addr, deadline time.Time) (Conn, error) {
if la != nil && la.Network() != ra.Network() { if la != nil && la.Network() != ra.Network() {
return nil, &OpError{Op: "dial", Net: net, Addr: ra, Err: errors.New("mismatched local address type " + la.Network())} return nil, &OpError{Op: "dial", Net: net, Addr: ra, Err: errors.New("mismatched local address type " + la.Network())}
} }
switch ra := ra.(type) { switch ra := ra.(type) {
case *TCPAddr: case *TCPAddr:
la, _ := la.(*TCPAddr) la, _ := la.(*TCPAddr)
c, err = dialTCP(net, la, ra, deadline) return dialTCP(net, la, ra, deadline)
case *UDPAddr: case *UDPAddr:
la, _ := la.(*UDPAddr) la, _ := la.(*UDPAddr)
c, err = dialUDP(net, la, ra, deadline) return dialUDP(net, la, ra, deadline)
case *IPAddr: case *IPAddr:
la, _ := la.(*IPAddr) la, _ := la.(*IPAddr)
c, err = dialIP(net, la, ra, deadline) return dialIP(net, la, ra, deadline)
case *UnixAddr: case *UnixAddr:
la, _ := la.(*UnixAddr) la, _ := la.(*UnixAddr)
c, err = dialUnix(net, la, ra, deadline) return dialUnix(net, la, ra, deadline)
default: default:
err = &OpError{Op: "dial", Net: net, Addr: ra, Err: &AddrError{Err: "unexpected address type", Addr: addr}} return nil, &OpError{Op: "dial", Net: net, Addr: ra, Err: &AddrError{Err: "unexpected address type", Addr: addr}}
} }
if err != nil {
return nil, err
}
return
} }
type stringAddr struct { type stringAddr struct {