use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/mholt/caddy/caddyhttp/websocket/setup.go

@@ -0,0 +1,110 @@
+// Copyright 2015 Light Code Labs, LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package websocket
+
+import (
+	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
+)
+
+func init() {
+	caddy.RegisterPlugin("websocket", caddy.Plugin{
+		ServerType: "http",
+		Action:     setup,
+	})
+}
+
+// setup configures a new WebSocket middleware instance.
+func setup(c *caddy.Controller) error {
+	websocks, err := webSocketParse(c)
+	if err != nil {
+		return err
+	}
+
+	GatewayInterface = caddy.AppName + "-CGI/1.1"
+	ServerSoftware = caddy.AppName + "/" + caddy.AppVersion
+
+	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
+		return WebSocket{Next: next, Sockets: websocks}
+	})
+
+	return nil
+}
+
+func webSocketParse(c *caddy.Controller) ([]Config, error) {
+	var websocks []Config
+	var respawn bool
+
+	optionalBlock := func() (hadBlock bool, err error) {
+		for c.NextBlock() {
+			hadBlock = true
+			if c.Val() == "respawn" {
+				respawn = true
+			} else {
+				return true, c.Err("Expected websocket configuration parameter in block")
+			}
+		}
+		return
+	}
+
+	for c.Next() {
+		var val, path, command string
+
+		// Path or command; not sure which yet
+		if !c.NextArg() {
+			return nil, c.ArgErr()
+		}
+		val = c.Val()
+
+		// Extra configuration may be in a block
+		hadBlock, err := optionalBlock()
+		if err != nil {
+			return nil, err
+		}
+
+		if !hadBlock {
+			// The next argument on this line will be the command or an open curly brace
+			if c.NextArg() {
+				path = val
+				command = c.Val()
+			} else {
+				path = "/"
+				command = val
+			}
+
+			// Okay, check again for optional block
+			_, err = optionalBlock()
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		// Split command into the actual command and its arguments
+		cmd, args, err := caddy.SplitCommandAndArgs(command)
+		if err != nil {
+			return nil, err
+		}
+
+		websocks = append(websocks, Config{
+			Path:      path,
+			Command:   cmd,
+			Arguments: args,
+			Respawn:   respawn, // TODO: This isn't used currently
+		})
+	}
+
+	return websocks, nil
+
+}