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Make blank -H option default to the same as no -H was sent

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This commit is contained in:
Brian Goff 2013-12-28 16:16:03 -05:00
parent 22162687df
commit 8b82b0dfe7
3 changed files with 12 additions and 1 deletions
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5
docs/sources/use/basics.rst
View file

@ -115,6 +115,11 @@ For example:
* ``tcp://host:4243`` -> tcp connection on host:4243
* ``unix://path/to/socket`` -> unix socket located at ``path/to/socket``
``-H``, when empty, will default to the same value as when no ``-H`` was passed in.
``-H`` also accepts short form for TCP bindings:
``host[:port]`` or ``:port``
.. code-block:: bash
# Run docker in daemon mode

5
utils/utils.go
View file

@ -803,7 +803,7 @@ func ParseHost(defaultHost string, defaultPort int, defaultUnix, addr string) (s
host string
port int
)
addr = strings.TrimSpace(addr)
switch {
case strings.HasPrefix(addr, "unix://"):
proto = "unix"
@ -814,6 +814,9 @@ func ParseHost(defaultHost string, defaultPort int, defaultUnix, addr string) (s
case strings.HasPrefix(addr, "tcp://"):
proto = "tcp"
addr = strings.TrimPrefix(addr, "tcp://")
case addr == "":
proto = "unix"
addr = defaultUnix
default:
if strings.Contains(addr, "://") {
return "", fmt.Errorf("Invalid bind address protocol: %s", addr)

3
utils/utils_test.go
View file

@ -316,6 +316,9 @@ func TestParseHost(t *testing.T) {
if addr, err := ParseHost(defaultHttpHost, defaultHttpPort, defaultUnix, "tcp://:7777"); err != nil || addr != "tcp://127.0.0.1:7777" {
t.Errorf("tcp://:7777 -> expected tcp://127.0.0.1:7777, got %s", addr)
}
if addr, err := ParseHost(defaultHttpHost, defaultHttpPort, defaultUnix, ""); err != nil || addr != "unix:///var/run/docker.sock" {
t.Errorf("empty argument -> expected unix:///var/run/docker.sock, got %s", addr)
}
if addr, err := ParseHost(defaultHttpHost, defaultHttpPort, defaultUnix, "unix:///var/run/docker.sock"); err != nil || addr != "unix:///var/run/docker.sock" {
t.Errorf("unix:///var/run/docker.sock -> expected unix:///var/run/docker.sock, got %s", addr)
}