func init() {
	// Arguments for ssh server
	flag.BoolVar(&h, []string{"h", "#help", "-help"}, false,
		"display this help message")
	flag.BoolVar(&server, []string{"s", "-server"}, false,
		"start the server")
	flag.StringVar(&listen, []string{"l", "-listen"}, "0.0.0.0",
		"start the server")
	flag.IntVar(&port, []string{"p", "-port"}, 5566,
		"port to listen")
	flag.StringVar(&user, []string{"-user"}, "sshcam",
		"username for SSH login")
	flag.StringVar(&pass, []string{"-pass"}, "[email protected]",
		"password for SSH login")

	// Arguments for img2xterm
	flag.BoolVar(&colorful, []string{"c", "-color"}, false,
		"turn on color")
	flag.BoolVar(&asciiOnly, []string{"-ascii-only"}, false,
		"fallback to use ASCII's full block characters")
	flag.StringVar(&distanceAlgorithm, []string{"-color-algorithm"}, "yiq",
		"algorithm use to compute colors. Available options are:\n"+
			"'rgb': simple linear distance in RGB colorspace\n"+
			"'yiq': simple linear distance in YIQ colorspace (the default)\n"+
			"'cie94': use the CIE94 formula")
	flag.IntVar(&maxFPS, []string{"-max-fps"}, 4,
		"limit the maximum FPS")
	flag.StringVar(&device, []string{"-device"}, "/dev/video0",
		"the webcam device to open")
	flag.StringVar(&sizeFlag, []string{"-size"}, "640x480",
		"image dimension, must be supported by the device")

	flag.Parse()
	size = wxh2Size(sizeFlag)
}

func (config *Config) InstallCommonFlags() {
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, defaultPidFile, "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, defaultGraph, "Root of the Docker runtime")
	flag.StringVar(&config.ExecRoot, []string{"-exec-root"}, "/var/run/docker", "Root of the Docker execdriver")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flag.BoolVar(&config.Bridge.EnableIPTables, []string{"#iptables", "-iptables"}, true, "Enable addition of iptables rules")
	flag.BoolVar(&config.Bridge.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
	flag.BoolVar(&config.Bridge.EnableIPMasq, []string{"-ip-masq"}, true, "Enable IP masquerading")
	flag.BoolVar(&config.Bridge.EnableIPv6, []string{"-ipv6"}, false, "Enable IPv6 networking")
	flag.StringVar(&config.Bridge.IP, []string{"#bip", "-bip"}, "", "Specify network bridge IP")
	flag.StringVar(&config.Bridge.Iface, []string{"b", "-bridge"}, "", "Attach containers to a network bridge")
	flag.StringVar(&config.Bridge.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs")
	flag.StringVar(&config.Bridge.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", "IPv6 subnet for fixed IPs")
	flag.StringVar(&config.Bridge.DefaultGatewayIPv4, []string{"-default-gateway"}, "", "Container default gateway IPv4 address")
	flag.StringVar(&config.Bridge.DefaultGatewayIPv6, []string{"-default-gateway-v6"}, "", "Container default gateway IPv6 address")
	flag.BoolVar(&config.Bridge.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Storage driver to use")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, defaultExec, "Exec driver to use")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU")
	flag.BoolVar(&config.EnableCors, []string{"#api-enable-cors", "#-api-enable-cors"}, false, "Enable CORS headers in the remote API, this is deprecated by --api-cors-header")
	flag.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", "Set CORS headers in the remote API")
	opts.IPVar(&config.Bridge.DefaultIP, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP when binding container ports")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "DNS server to use")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "DNS search domains to use")
	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon")
	flag.StringVar(&config.LogConfig.Type, []string{"-log-driver"}, "json-file", "Default driver for container logs")
	opts.LogOptsVar(config.LogConfig.Config, []string{"-log-opt"}, "Set log driver options")
	flag.BoolVar(&config.Bridge.EnableUserlandProxy, []string{"-userland-proxy"}, true, "Use userland proxy for loopback traffic")

}

// InstallFlags adds command-line options to the top-level flag parser for
// the current process.
// Subsequent calls to `flag.Parse` will populate config with values parsed
// from the command-line.
func (config *Config) InstallFlags() {
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Root of the Docker runtime")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable addition of iptables rules")
	flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
	flag.BoolVar(&config.EnableIpMasq, []string{"-ip-masq"}, true, "Enable IP masquerading")
	flag.BoolVar(&config.EnableIPv6, []string{"-ipv6"}, false, "Enable IPv6 networking")
	flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Specify network bridge IP")
	flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a network bridge")
	flag.StringVar(&config.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs")
	flag.StringVar(&config.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", "IPv6 subnet for fixed IPs")
	flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Storage driver to use")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Exec driver to use")
	flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU")
	flag.StringVar(&config.SocketGroup, []string{"G", "-group"}, "docker", "Group for the unix socket")
	flag.BoolVar(&config.EnableCors, []string{"#api-enable-cors", "#-api-enable-cors"}, false, "Enable CORS headers in the remote API, this is deprecated by --api-cors-header")
	flag.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", "Set CORS headers in the remote API")
	opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP when binding container ports")
	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "DNS server to use")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "DNS search domains to use")
	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon")
	config.Ulimits = make(map[string]*ulimit.Ulimit)
	opts.UlimitMapVar(config.Ulimits, []string{"-default-ulimit"}, "Set default ulimits for containers")
	flag.StringVar(&config.LogConfig.Type, []string{"-log-driver"}, "json-file", "Containers logging driver(json-file/none)")
}

// InstallFlags adds command-line options to the top-level flag parser for
// the current process.
// Subsequent calls to `flag.Parse` will populate config with values parsed
// from the command-line.
func (config *Config) InstallFlags() {
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the Docker runtime")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable Docker's addition of iptables rules")
	flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
	flag.BoolVar(&config.EnableIpMasq, []string{"-ip-masq"}, true, "Enable IP masquerading for bridge's IP range")
	flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b")
	flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge\nuse 'none' to disable container networking")
	flag.StringVar(&config.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs (ex: 10.20.0.0/16)\nthis subnet must be nested in the bridge subnet (which is defined by -b or --bip)")
	opts.ListVar(&config.InsecureRegistries, []string{"-insecure-registry"}, "Enable insecure communication with specified registries (no certificate verification for HTTPS and enable HTTP fallback) (e.g., localhost:5000 or 10.20.0.0/16)")
	flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Force the Docker runtime to use a specific storage driver")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Force the Docker runtime to use a specific exec driver")
	flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support. SELinux does not presently support the BTRFS storage driver")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU\nif no value is provided: default to the default route MTU or 1500 if no default route is available")
	opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports")
	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "Force Docker to use specific DNS servers")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "Force Docker to use specific DNS search domains")
	opts.MirrorListVar(&config.Mirrors, []string{"-registry-mirror"}, "Specify a preferred Docker registry mirror")
	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon (displayed in `docker info`)")

	// Localhost is by default considered as an insecure registry
	// This is a stop-gap for people who are running a private registry on localhost (especially on Boot2docker).
	//
	// TODO: should we deprecate this once it is easier for people to set up a TLS registry or change
	// daemon flags on boot2docker?
	// If so, do not forget to check the TODO in TestIsSecure
	config.InsecureRegistries = append(config.InsecureRegistries, "127.0.0.0/8")
}

func init() {
	flag.Bool([]string{"#hp", "#-halp"}, false, "display the halp")
	flag.BoolVar(&b, []string{"b", "#bal", "#bol", "-bal"}, false, "a simple bool")
	flag.BoolVar(&b, []string{"g", "#gil"}, false, "a simple bool")
	flag.BoolVar(&b2, []string{"#-bool"}, false, "a simple bool")
	flag.IntVar(&i, []string{"-integer", "-number"}, -1, "a simple integer")
	flag.StringVar(&str, []string{"s", "#hidden", "-string"}, "", "a simple string") //-s -hidden and --string will work, but -hidden won't be in the usage
	flag.BoolVar(&h, []string{"h", "#help", "-help"}, false, "display the help")
	flag.StringVar(&str, []string{"mode"}, "mode1", "set the mode\nmode1: use the mode1\nmode2: use the mode2\nmode3: use the mode3")
	flag.Parse()
}

// InstallCommonFlags adds command-line options to the top-level flag parser for
// the current process.
// Subsequent calls to `flag.Parse` will populate config with values parsed
// from the command-line.
func (config *Config) InstallCommonFlags() {
	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
	opts.ListVar(&config.ExecOptions, []string{"-exec-opt"}, "Set exec driver options")
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, defaultPidFile, "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, defaultGraph, "Root of the Docker runtime")
	flag.StringVar(&config.ExecRoot, []string{"-exec-root"}, "/var/run/docker", "Root of the Docker execdriver")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Storage driver to use")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, defaultExec, "Exec driver to use")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU")
	flag.BoolVar(&config.EnableCors, []string{"#api-enable-cors", "#-api-enable-cors"}, false, "Enable CORS headers in the remote API, this is deprecated by --api-cors-header")
	flag.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", "Set CORS headers in the remote API")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "DNS server to use")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "DNS search domains to use")
	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon")
	flag.StringVar(&config.LogConfig.Type, []string{"-log-driver"}, "json-file", "Default driver for container logs")
	opts.LogOptsVar(config.LogConfig.Config, []string{"-log-opt"}, "Set log driver options")
}

// InstallFlags adds command-line options to the top-level flag parser for
// the current process.
// Subsequent calls to `flag.Parse` will populate config with values parsed
// from the command-line.
func (config *Config) InstallFlags() {
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the Docker runtime")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated infavor of --restart policies on docker run")
	flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable Docker's addition of iptables rules")
	flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward")
	flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b")
	flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge\nuse 'none' to disable container networking")
	flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Enable inter-container communication")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Force the Docker runtime to use a specific storage driver")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Force the Docker runtime to use a specific exec driver")
	flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support. SELinux does not presently support the BTRFS storage driver")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU\nif no value is provided: default to the default route MTU or 1500 if no default route is available")
	opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports")
	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "Force Docker to use specific DNS servers")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "Force Docker to use specific DNS search domains")
}

// InstallFlags adds command-line options to the top-level flag parser for
// the current process.
// Subsequent calls to `flag.Parse` will populate config with values parsed
// from the command-line.
func (config *Config) InstallFlags() {
	flag.StringVar(&config.Pidfile, []string{"p", "-pidfile"}, "/var/run/docker.pid", "Path to use for daemon PID file")
	flag.StringVar(&config.Root, []string{"g", "-graph"}, "/var/lib/docker", "Path to use as the root of the Docker runtime")
	flag.BoolVar(&config.AutoRestart, []string{"#r", "#-restart"}, true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flag.BoolVar(&config.EnableIptables, []string{"#iptables", "-iptables"}, true, "Enable Docker's addition of iptables rules")
	flag.BoolVar(&config.EnableIpForward, []string{"#ip-forward", "-ip-forward"}, true, "Enable net.ipv4.ip_forward and IPv6 forwarding if --fixed-cidr-v6 is defined. IPv6 forwarding may interfere with your existing IPv6 configuration when using Router Advertisement.")
	flag.BoolVar(&config.EnableIpMasq, []string{"-ip-masq"}, true, "Enable IP masquerading for bridge's IP range")
	flag.BoolVar(&config.EnableIPv6, []string{"-ipv6"}, false, "Enable IPv6 networking")
	flag.StringVar(&config.BridgeIP, []string{"#bip", "-bip"}, "", "Use this CIDR notation address for the network bridge's IP, not compatible with -b")
	flag.StringVar(&config.BridgeIface, []string{"b", "-bridge"}, "", "Attach containers to a pre-existing network bridge\nuse 'none' to disable container networking")
	flag.StringVar(&config.FixedCIDR, []string{"-fixed-cidr"}, "", "IPv4 subnet for fixed IPs (e.g. 10.20.0.0/16)\nthis subnet must be nested in the bridge subnet (which is defined by -b or --bip)")
	flag.StringVar(&config.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", "IPv6 subnet for fixed IPs (e.g.: 2001:a02b/48)")
	flag.BoolVar(&config.InterContainerCommunication, []string{"#icc", "-icc"}, true, "Allow unrestricted inter-container and Docker daemon host communication")
	flag.StringVar(&config.GraphDriver, []string{"s", "-storage-driver"}, "", "Force the Docker runtime to use a specific storage driver")
	flag.StringVar(&config.ExecDriver, []string{"e", "-exec-driver"}, "native", "Force the Docker runtime to use a specific exec driver")
	flag.BoolVar(&config.EnableSelinuxSupport, []string{"-selinux-enabled"}, false, "Enable selinux support. SELinux does not presently support the BTRFS storage driver")
	flag.IntVar(&config.Mtu, []string{"#mtu", "-mtu"}, 0, "Set the containers network MTU\nif no value is provided: default to the default route MTU or 1500 if no default route is available")
	opts.IPVar(&config.DefaultIp, []string{"#ip", "-ip"}, "0.0.0.0", "Default IP address to use when binding container ports")
	opts.ListVar(&config.GraphOptions, []string{"-storage-opt"}, "Set storage driver options")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	opts.IPListVar(&config.Dns, []string{"#dns", "-dns"}, "Force Docker to use specific DNS servers")
	opts.DnsSearchListVar(&config.DnsSearch, []string{"-dns-search"}, "Force Docker to use specific DNS search domains")
	opts.LabelListVar(&config.Labels, []string{"-label"}, "Set key=value labels to the daemon (displayed in `docker info`)")
}

func main() {
	procs := runtime.NumCPU()
	// packet sniffing can block an OS thread, so we need one thread
	// for that plus at least one more.
	if procs < 2 {
		procs = 2
	}
	runtime.GOMAXPROCS(procs)

	var (
		config             weave.Config
		justVersion        bool
		protocolMinVersion int
		ifaceName          string
		routerName         string
		nickName           string
		password           string
		wait               int
		pktdebug           bool
		logLevel           string
		prof               string
		bufSzMB            int
		noDiscovery        bool
		httpAddr           string
		iprangeCIDR        string
		ipsubnetCIDR       string
		peerCount          int
		apiPath            string
		peers              []string
		noDNS              bool
		dnsDomain          string
		dnsPort            int
		dnsTTL             int
		dnsClientTimeout   time.Duration
	)

	mflag.BoolVar(&justVersion, []string{"#version", "-version"}, false, "print version and exit")
	mflag.IntVar(&config.Port, []string{"#port", "-port"}, weave.Port, "router port")
	mflag.IntVar(&protocolMinVersion, []string{"-min-protocol-version"}, weave.ProtocolMinVersion, "minimum weave protocol version")
	mflag.StringVar(&ifaceName, []string{"#iface", "-iface"}, "", "name of interface to capture/inject from (disabled if blank)")
	mflag.StringVar(&routerName, []string{"#name", "-name"}, "", "name of router (defaults to MAC of interface)")
	mflag.StringVar(&nickName, []string{"#nickname", "-nickname"}, "", "nickname of peer (defaults to hostname)")
	mflag.StringVar(&password, []string{"#password", "-password"}, "", "network password")
	mflag.IntVar(&wait, []string{"#wait", "-wait"}, -1, "number of seconds to wait for interface to come up (0=don't wait, -1=wait forever)")
	mflag.StringVar(&logLevel, []string{"-log-level"}, "info", "logging level (debug, info, warning, error)")
	mflag.BoolVar(&pktdebug, []string{"#pktdebug", "#-pktdebug", "-pkt-debug"}, false, "enable per-packet debug logging")
	mflag.StringVar(&prof, []string{"#profile", "-profile"}, "", "enable profiling and write profiles to given path")
	mflag.IntVar(&config.ConnLimit, []string{"#connlimit", "#-connlimit", "-conn-limit"}, 30, "connection limit (0 for unlimited)")
	mflag.BoolVar(&noDiscovery, []string{"#nodiscovery", "#-nodiscovery", "-no-discovery"}, false, "disable peer discovery")
	mflag.IntVar(&bufSzMB, []string{"#bufsz", "-bufsz"}, 8, "capture buffer size in MB")
	mflag.StringVar(&httpAddr, []string{"#httpaddr", "#-httpaddr", "-http-addr"}, fmt.Sprintf(":%d", weave.HTTPPort), "address to bind HTTP interface to (disabled if blank, absolute path indicates unix domain socket)")
	mflag.StringVar(&iprangeCIDR, []string{"#iprange", "#-iprange", "-ipalloc-range"}, "", "IP address range reserved for automatic allocation, in CIDR notation")
	mflag.StringVar(&ipsubnetCIDR, []string{"#ipsubnet", "#-ipsubnet", "-ipalloc-default-subnet"}, "", "subnet to allocate within by default, in CIDR notation")
	mflag.IntVar(&peerCount, []string{"#initpeercount", "#-initpeercount", "-init-peer-count"}, 0, "number of peers in network (for IP address allocation)")
	mflag.StringVar(&apiPath, []string{"#api", "-api"}, "unix:///var/run/docker.sock", "Path to Docker API socket")
	mflag.BoolVar(&noDNS, []string{"-no-dns"}, false, "disable DNS server")
	mflag.StringVar(&dnsDomain, []string{"-dns-domain"}, nameserver.DefaultDomain, "local domain to server requests for")
	mflag.IntVar(&dnsPort, []string{"-dns-port"}, nameserver.DefaultPort, "port to listen on for DNS requests")
	mflag.IntVar(&dnsTTL, []string{"-dns-ttl"}, nameserver.DefaultTTL, "TTL for DNS request from our domain")
	mflag.DurationVar(&dnsClientTimeout, []string{"-dns-fallback-timeout"}, nameserver.DefaultClientTimeout, "timeout for fallback DNS requests")

	mflag.Parse()
	peers = mflag.Args()

	SetLogLevel(logLevel)
	if justVersion {
		fmt.Printf("weave router %s\n", version)
		os.Exit(0)
	}

	Log.Println("Command line options:", options())
	Log.Println("Command line peers:", peers)

	if protocolMinVersion < weave.ProtocolMinVersion || protocolMinVersion > weave.ProtocolMaxVersion {
		Log.Fatalf("--min-protocol-version must be in range [%d,%d]", weave.ProtocolMinVersion, weave.ProtocolMaxVersion)
	}
	config.ProtocolMinVersion = byte(protocolMinVersion)

	var err error

	if ifaceName != "" {
		config.Iface, err = weavenet.EnsureInterface(ifaceName, wait)
		if err != nil {
			Log.Fatal(err)
		}
	}

	if routerName == "" {
		if config.Iface == nil {
			Log.Fatal("Either an interface must be specified with --iface or a name with -name")
		}
		routerName = config.Iface.HardwareAddr.String()
	}
	name, err := weave.PeerNameFromUserInput(routerName)
	if err != nil {
		Log.Fatal(err)
	}

	if nickName == "" {
		nickName, err = os.Hostname()
//.........这里部分代码省略.........

func main() {
	var (
		justVersion     bool
		dockerCli       *docker.Client
		ifaceName       string
		apiPath         string
		domain          string
		dnsPort         int
		httpIfaceName   string
		httpPort        int
		wait            int
		ttl             int
		negTTL          int
		timeout         int
		udpbuf          int
		fallback        string
		refreshInterval int
		relevantTime    int
		maxAnswers      int
		cacheLen        int
		cacheDisabled   bool
		watch           bool
		logLevel        string
		err             error
	)

	mflag.BoolVar(&justVersion, []string{"#version", "-version"}, false, "print version and exit")
	mflag.StringVar(&ifaceName, []string{"#iface", "-iface"}, "", "name of interface to use for multicast")
	mflag.StringVar(&apiPath, []string{"#api", "-api"}, "unix:///var/run/docker.sock", "path to Docker API socket")
	mflag.StringVar(&domain, []string{"#domain", "-domain"}, weavedns.DefaultLocalDomain, "local domain (ie, 'weave.local.')")
	mflag.IntVar(&wait, []string{"#wait", "-wait"}, -1, "number of seconds to wait for interfaces to come up (0=don't wait, -1=wait forever)")
	mflag.IntVar(&dnsPort, []string{"#dnsport", "#-dnsport", "-dns-port"}, weavedns.DefaultServerPort, "port to listen to DNS requests")
	mflag.StringVar(&httpIfaceName, []string{"#httpiface", "#-httpiface", "-http-iface"}, "", "interface on which to listen for HTTP requests (empty string means listen on all interfaces)")
	mflag.IntVar(&httpPort, []string{"#httpport", "#-httpport", "-http-port"}, weavedns.DefaultHTTPPort, "port to listen to HTTP requests")
	mflag.IntVar(&cacheLen, []string{"#cache", "-cache"}, weavedns.DefaultCacheLen, "cache length")
	mflag.IntVar(&ttl, []string{"#ttl", "-ttl"}, weavedns.DefaultLocalTTL, "TTL (in secs) for responses for local names")
	mflag.BoolVar(&watch, []string{"#watch", "-watch"}, true, "watch the docker socket for container events")
	mflag.StringVar(&logLevel, []string{"-log-level"}, "info", "logging level (debug, info, warning, error)")
	// advanced options
	mflag.IntVar(&negTTL, []string{"#neg-ttl", "-neg-ttl"}, 0, "negative TTL (in secs) for unanswered queries for local names (0=same value as --ttl")
	mflag.IntVar(&refreshInterval, []string{"#refresh", "-refresh"}, weavedns.DefaultRefreshInterval, "refresh interval (in secs) for local names (0=disable)")
	mflag.IntVar(&maxAnswers, []string{"#max-answers", "#-max-answers", "-dns-max-answers"}, weavedns.DefaultMaxAnswers, "maximum number of answers returned to clients (0=unlimited)")
	mflag.IntVar(&relevantTime, []string{"#relevant", "-relevant"}, weavedns.DefaultRelevantTime, "life time for info in the absence of queries (in secs)")
	mflag.IntVar(&udpbuf, []string{"#udpbuf", "#-udpbuf", "-dns-udpbuf"}, weavedns.DefaultUDPBuflen, "UDP buffer length for DNS")
	mflag.IntVar(&timeout, []string{"#timeout", "#-timeout", "-dns-timeout"}, weavedns.DefaultTimeout, "timeout for resolutions (in millisecs)")
	mflag.BoolVar(&cacheDisabled, []string{"#no-cache", "-no-cache"}, false, "disable the cache")
	mflag.StringVar(&fallback, []string{"#fallback", "#-fallback", "-dns-fallback"}, "", "force a fallback server (ie, '8.8.8.8:53') (instead of /etc/resolv.conf values)")
	mflag.Parse()

	if justVersion {
		fmt.Printf("weave DNS %s\n", version)
		os.Exit(0)
	}

	SetLogLevel(logLevel)
	Log.Infof("[main] WeaveDNS version %s", version) // first thing in log: the version

	var iface *net.Interface
	if ifaceName != "" {
		var err error
		Log.Infoln("[main] Waiting for mDNS interface", ifaceName, "to come up")
		iface, err = weavenet.EnsureInterface(ifaceName, wait)
		if err != nil {
			Log.Fatal(err)
		} else {
			Log.Infoln("[main] Interface", ifaceName, "is up")
		}
	}

	var httpIP string
	if httpIfaceName == "" {
		httpIP = "0.0.0.0"
	} else {
		Log.Infoln("[main] Waiting for HTTP interface", httpIfaceName, "to come up")
		httpIface, err := weavenet.EnsureInterface(httpIfaceName, wait)
		if err != nil {
			Log.Fatal(err)
		}
		Log.Infoln("[main] Interface", httpIfaceName, "is up")

		addrs, err := httpIface.Addrs()
		if err != nil {
			Log.Fatal(err)
		}

		if len(addrs) == 0 {
			Log.Fatal("[main] No addresses on HTTP interface")
		}

		ip, _, err := net.ParseCIDR(addrs[0].String())
		if err != nil {
			Log.Fatal(err)
		}

		httpIP = ip.String()

	}
	httpAddr := net.JoinHostPort(httpIP, strconv.Itoa(httpPort))

	zoneConfig := weavedns.ZoneConfig{
//.........这里部分代码省略.........

func main() {
	procs := runtime.NumCPU()
	// packet sniffing can block an OS thread, so we need one thread
	// for that plus at least one more.
	if procs < 2 {
		procs = 2
	}
	runtime.GOMAXPROCS(procs)

	var (
		config                    weave.Config
		justVersion               bool
		protocolMinVersion        int
		ifaceName                 string
		routerName                string
		nickName                  string
		password                  string
		pktdebug                  bool
		logLevel                  string
		prof                      string
		bufSzMB                   int
		noDiscovery               bool
		httpAddr                  string
		iprangeCIDR               string
		ipsubnetCIDR              string
		peerCount                 int
		dockerAPI                 string
		peers                     []string
		noDNS                     bool
		dnsDomain                 string
		dnsListenAddress          string
		dnsTTL                    int
		dnsClientTimeout          time.Duration
		dnsEffectiveListenAddress string
		iface                     *net.Interface
	)

	mflag.BoolVar(&justVersion, []string{"#version", "-version"}, false, "print version and exit")
	mflag.IntVar(&config.Port, []string{"#port", "-port"}, weave.Port, "router port")
	mflag.IntVar(&protocolMinVersion, []string{"-min-protocol-version"}, weave.ProtocolMinVersion, "minimum weave protocol version")
	mflag.StringVar(&ifaceName, []string{"#iface", "-iface"}, "", "name of interface to capture/inject from (disabled if blank)")
	mflag.StringVar(&routerName, []string{"#name", "-name"}, "", "name of router (defaults to MAC of interface)")
	mflag.StringVar(&nickName, []string{"#nickname", "-nickname"}, "", "nickname of peer (defaults to hostname)")
	mflag.StringVar(&password, []string{"#password", "-password"}, "", "network password")
	mflag.StringVar(&logLevel, []string{"-log-level"}, "info", "logging level (debug, info, warning, error)")
	mflag.BoolVar(&pktdebug, []string{"#pktdebug", "#-pktdebug", "-pkt-debug"}, false, "enable per-packet debug logging")
	mflag.StringVar(&prof, []string{"#profile", "-profile"}, "", "enable profiling and write profiles to given path")
	mflag.IntVar(&config.ConnLimit, []string{"#connlimit", "#-connlimit", "-conn-limit"}, 30, "connection limit (0 for unlimited)")
	mflag.BoolVar(&noDiscovery, []string{"#nodiscovery", "#-nodiscovery", "-no-discovery"}, false, "disable peer discovery")
	mflag.IntVar(&bufSzMB, []string{"#bufsz", "-bufsz"}, 8, "capture buffer size in MB")
	mflag.StringVar(&httpAddr, []string{"#httpaddr", "#-httpaddr", "-http-addr"}, fmt.Sprintf(":%d", weave.HTTPPort), "address to bind HTTP interface to (disabled if blank, absolute path indicates unix domain socket)")
	mflag.StringVar(&iprangeCIDR, []string{"#iprange", "#-iprange", "-ipalloc-range"}, "", "IP address range reserved for automatic allocation, in CIDR notation")
	mflag.StringVar(&ipsubnetCIDR, []string{"#ipsubnet", "#-ipsubnet", "-ipalloc-default-subnet"}, "", "subnet to allocate within by default, in CIDR notation")
	mflag.IntVar(&peerCount, []string{"#initpeercount", "#-initpeercount", "-init-peer-count"}, 0, "number of peers in network (for IP address allocation)")
	mflag.StringVar(&dockerAPI, []string{"#api", "#-api", "-docker-api"}, "", "Docker API endpoint, e.g. unix:///var/run/docker.sock")
	mflag.BoolVar(&noDNS, []string{"-no-dns"}, false, "disable DNS server")
	mflag.StringVar(&dnsDomain, []string{"-dns-domain"}, nameserver.DefaultDomain, "local domain to server requests for")
	mflag.StringVar(&dnsListenAddress, []string{"-dns-listen-address"}, nameserver.DefaultListenAddress, "address to listen on for DNS requests")
	mflag.IntVar(&dnsTTL, []string{"-dns-ttl"}, nameserver.DefaultTTL, "TTL for DNS request from our domain")
	mflag.DurationVar(&dnsClientTimeout, []string{"-dns-fallback-timeout"}, nameserver.DefaultClientTimeout, "timeout for fallback DNS requests")
	mflag.StringVar(&dnsEffectiveListenAddress, []string{"-dns-effective-listen-address"}, "", "address DNS will actually be listening, after Docker port mapping")

	// crude way of detecting that we probably have been started in a
	// container, with `weave launch` --> suppress misleading paths in
	// mflags error messages.
	if os.Args[0] == "/home/weave/weaver" { // matches the Dockerfile ENTRYPOINT
		os.Args[0] = "weave"
		mflag.CommandLine.Init("weave", mflag.ExitOnError)
	}
	mflag.Parse()

	peers = mflag.Args()

	SetLogLevel(logLevel)
	if justVersion {
		fmt.Printf("weave router %s\n", version)
		os.Exit(0)
	}

	Log.Println("Command line options:", options())
	Log.Println("Command line peers:", peers)

	if protocolMinVersion < weave.ProtocolMinVersion || protocolMinVersion > weave.ProtocolMaxVersion {
		Log.Fatalf("--min-protocol-version must be in range [%d,%d]", weave.ProtocolMinVersion, weave.ProtocolMaxVersion)
	}
	config.ProtocolMinVersion = byte(protocolMinVersion)

	var err error

	if ifaceName != "" {
		iface, err := weavenet.EnsureInterface(ifaceName)
		if err != nil {
			Log.Fatal(err)
		}

		// bufsz flag is in MB
		config.Bridge, err = weave.NewPcap(iface, bufSzMB*1024*1024)
		if err != nil {
			Log.Fatal(err)
		}
//.........这里部分代码省略.........

func main() {
	procs := runtime.NumCPU()
	// packet sniffing can block an OS thread, so we need one thread
	// for that plus at least one more.
	if procs < 2 {
		procs = 2
	}
	runtime.GOMAXPROCS(procs)

	var (
		// flags that cause immediate exit
		justVersion          bool
		createDatapath       bool
		deleteDatapath       bool
		addDatapathInterface string

		config                    mesh.Config
		networkConfig             weave.NetworkConfig
		protocolMinVersion        int
		ifaceName                 string
		routerName                string
		nickName                  string
		password                  string
		pktdebug                  bool
		logLevel                  string
		prof                      string
		bufSzMB                   int
		noDiscovery               bool
		httpAddr                  string
		iprangeCIDR               string
		ipsubnetCIDR              string
		peerCount                 int
		dockerAPI                 string
		peers                     []string
		noDNS                     bool
		dnsDomain                 string
		dnsListenAddress          string
		dnsTTL                    int
		dnsClientTimeout          time.Duration
		dnsEffectiveListenAddress string
		iface                     *net.Interface
		datapathName              string
		trustedSubnetStr          string

		defaultDockerHost = "unix:///var/run/docker.sock"
	)

	if val := os.Getenv("DOCKER_HOST"); val != "" {
		defaultDockerHost = val
	}

	mflag.BoolVar(&justVersion, []string{"#version", "-version"}, false, "print version and exit")
	mflag.BoolVar(&createDatapath, []string{"-create-datapath"}, false, "create ODP datapath and exit")
	mflag.BoolVar(&deleteDatapath, []string{"-delete-datapath"}, false, "delete ODP datapath and exit")
	mflag.StringVar(&addDatapathInterface, []string{"-add-datapath-iface"}, "", "add a network interface to the ODP datapath and exit")

	mflag.IntVar(&config.Port, []string{"#port", "-port"}, mesh.Port, "router port")
	mflag.IntVar(&protocolMinVersion, []string{"-min-protocol-version"}, mesh.ProtocolMinVersion, "minimum weave protocol version")
	mflag.StringVar(&ifaceName, []string{"#iface", "-iface"}, "", "name of interface to capture/inject from (disabled if blank)")
	mflag.StringVar(&routerName, []string{"#name", "-name"}, "", "name of router (defaults to MAC of interface)")
	mflag.StringVar(&nickName, []string{"#nickname", "-nickname"}, "", "nickname of peer (defaults to hostname)")
	mflag.StringVar(&password, []string{"#password", "-password"}, "", "network password")
	mflag.StringVar(&logLevel, []string{"-log-level"}, "info", "logging level (debug, info, warning, error)")
	mflag.BoolVar(&pktdebug, []string{"#pktdebug", "#-pktdebug", "-pkt-debug"}, false, "enable per-packet debug logging")
	mflag.StringVar(&prof, []string{"#profile", "-profile"}, "", "enable profiling and write profiles to given path")
	mflag.IntVar(&config.ConnLimit, []string{"#connlimit", "#-connlimit", "-conn-limit"}, 30, "connection limit (0 for unlimited)")
	mflag.BoolVar(&noDiscovery, []string{"#nodiscovery", "#-nodiscovery", "-no-discovery"}, false, "disable peer discovery")
	mflag.IntVar(&bufSzMB, []string{"#bufsz", "-bufsz"}, 8, "capture buffer size in MB")
	mflag.StringVar(&httpAddr, []string{"#httpaddr", "#-httpaddr", "-http-addr"}, "", "address to bind HTTP interface to (disabled if blank, absolute path indicates unix domain socket)")
	mflag.StringVar(&iprangeCIDR, []string{"#iprange", "#-iprange", "-ipalloc-range"}, "", "IP address range reserved for automatic allocation, in CIDR notation")
	mflag.StringVar(&ipsubnetCIDR, []string{"#ipsubnet", "#-ipsubnet", "-ipalloc-default-subnet"}, "", "subnet to allocate within by default, in CIDR notation")
	mflag.IntVar(&peerCount, []string{"#initpeercount", "#-initpeercount", "-init-peer-count"}, 0, "number of peers in network (for IP address allocation)")
	mflag.StringVar(&dockerAPI, []string{"#api", "#-api", "-docker-api"}, defaultDockerHost, "Docker API endpoint")
	mflag.BoolVar(&noDNS, []string{"-no-dns"}, false, "disable DNS server")
	mflag.StringVar(&dnsDomain, []string{"-dns-domain"}, nameserver.DefaultDomain, "local domain to server requests for")
	mflag.StringVar(&dnsListenA