gcc/libgo/go/net/port.go

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// Copyright 2012 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.
// Network service port manipulations
package net
// parsePort parses port as a network service port number for both
// TCP and UDP.
func parsePort(net, port string) (int, error) {
p, i, ok := dtoi(port, 0)
if !ok || i != len(port) {
var err error
p, err = LookupPort(net, port)
if err != nil {
return 0, err
}
}
if p < 0 || p > 0xFFFF {
return 0, &AddrError{"invalid port", port}
}
return p, nil
}