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net: document ":port" syntax in Dial, Listen, ListenPacket

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Change-Id: Ideb4bd9ffb1b5f1aef7d94ff791a262f54a650d5
Reviewed-on: https://go-review.googlesource.com/18344
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Russ Cox 2016-01-06 20:55:59 -05:00
parent cd91c3b036
commit ebf1f0fcbe
1 changed files with 9 additions and 1 deletions
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10
src/net/dial.go
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@ -170,12 +170,14 @@ func resolveAddrList(op, net, addr string, deadline time.Time) (addrList, error)
// in square brackets as in "[::1]:80" or "[ipv6-host%zone]:80".
// The functions JoinHostPort and SplitHostPort manipulate addresses
// in this form.
// If the host is empty, as in ":80", the local system is assumed.
//
// Examples:
// Dial("tcp", "12.34.56.78:80")
// Dial("tcp", "google.com:http")
// Dial("tcp", "[2001:db8::1]:http")
// Dial("tcp", "[fe80::1%lo0]:80")
// Dial("tcp", ":80")
//
// For IP networks, the network must be "ip", "ip4" or "ip6" followed
// by a colon and a protocol number or name and the addr must be a
@ -388,7 +390,10 @@ func dialSingle(ctx *dialContext, ra Addr, deadline time.Time) (c Conn, err erro
// Listen announces on the local network address laddr.
// The network net must be a stream-oriented network: "tcp", "tcp4",
// "tcp6", "unix" or "unixpacket".
// See Dial for the syntax of laddr.
// For TCP and UDP, the syntax of laddr is "host:port", like "127.0.0.1:8080".
// If host is omitted, as in ":8080", Listen listens on all available interfaces
// instead of just the interface with the given host address.
// See Dial for more details about address syntax.
func Listen(net, laddr string) (Listener, error) {
addrs, err := resolveAddrList("listen", net, laddr, noDeadline)
if err != nil {
@ -412,6 +417,9 @@ func Listen(net, laddr string) (Listener, error) {
// ListenPacket announces on the local network address laddr.
// The network net must be a packet-oriented network: "udp", "udp4",
// "udp6", "ip", "ip4", "ip6" or "unixgram".
// For TCP and UDP, the syntax of laddr is "host:port", like "127.0.0.1:8080".
// If host is omitted, as in ":8080", ListenPacket listens on all available interfaces
// instead of just the interface with the given host address.
// See Dial for the syntax of laddr.
func ListenPacket(net, laddr string) (PacketConn, error) {
addrs, err := resolveAddrList("listen", net, laddr, noDeadline)