Default the tcp port to 2376 if tls is on, and 2375 if not

Refactor so that the Host flag validation doesn't destroy the user's input,
and then post process the flags when we know the TLS options

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
Upstream-commit: 0095e6fc23
Component: cli

components/cli/docs/reference/commandline/cli.md

@@ -19,7 +19,7 @@ or execute `docker help`:
              docker daemon [ --help | ... ]
              docker [ --help | -v | --version ]
 
-        -H, --host=[]: The socket(s) to bind to in daemon mode, specified using one or more tcp://host:port, unix:///path/to/socket, fd://* or fd://socketfd.
+        -H, --host=[]: The socket(s) to talk to the Docker daemon in the format of tcp://host:port/path, unix:///path/to/socket, fd://* or fd://socketfd.
 
       A self-sufficient runtime for Linux containers.
 

components/cli/man/docker.1.md

@@ -36,10 +36,12 @@ To see the man page for a command run **man docker <command>**.
 **-D**, **--debug**=*true*|*false*
   Enable debug mode. Default is false.
 
-**-H**, **--host**=[unix:///var/run/docker.sock]: tcp://[host:port] to bind or
+**-H**, **--host**=[unix:///var/run/docker.sock]: tcp://[host]:[port][path] to bind or
 unix://[/path/to/socket] to use.
   The socket(s) to bind to in daemon mode specified using one or more
-  tcp://host:port, unix:///path/to/socket, fd://* or fd://socketfd.
+  tcp://host:port/path, unix:///path/to/socket, fd://* or fd://socketfd.
+  If the tcp port is not specified, then it will default to either `2375` when
+  `--tls` is off, or `2376` when `--tls` is on, or `--tlsverify` is specified.
 
 **-l**, **--log-level**="*debug*|*info*|*warn*|*error*|*fatal*""
   Set the logging level. Default is `info`.