caddy/caddyhttp/websocket/setup.go
Matthew Holt a798e0c951 Refactor how caddy.Context is stored and used
- Server types no longer need to store their own contexts; they are
  stored on the caddy.Instance, which means each context will be
  properly GC'ed when the instance is stopped. Server types should use
  type assertions to convert from caddy.Context to their concrete
  context type when they need to use it.
- Pass the entire context into httpserver.GetConfig instead of only the
  Key field.
- caddy.NewTestController now requires a server type string so it can
  create a controller with the proper concrete context associated with
  that server type.

Tests still need more attention so that we can test the proper creation
of startup functions, etc.
2016-06-20 11:59:23 -06:00

97 lines
1.9 KiB
Go

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
}