Added subdomains recipe closes #121

Signed-off-by: Vishal Rana <vr@labstack.com>

README.md

@@ -82,6 +82,7 @@ $ go get github.com/labstack/echo
 - [Streaming File Upload](http://echo.labstack.com/recipes/streaming-file-upload)
 - [Streaming Response](http://echo.labstack.com/recipes/streaming-response)
 - [WebSocket](http://echo.labstack.com/recipes/websocket)
+- [Subdomains](http://echo.labstack.com/recipes/subdomains)
 - [Graceful Shutdown](http://echo.labstack.com/recipes/graceful-shutdown)
 
 ##[Guide](http://echo.labstack.com/guide)

recipes/file-upload/server.go

@@ -20,7 +20,7 @@ func upload(c *echo.Context) error {
 
 	// Read files
 	files := req.MultipartForm.File["files"]
-	for _, f := range(files) {
+	for _, f := range files {
 		// Source file
 		src, err := f.Open()
 		if err != nil {

recipes/streaming-file-upload/server.go

@@ -5,8 +5,8 @@ import (
 
 	"github.com/labstack/echo"
 	"io"
-	"os"
 	"net/http"
+	"os"
 )
 
 func upload(c *echo.Context) error {

recipes/subdomains/server.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/labstack/echo"
+	mw "github.com/labstack/echo/middleware"
+)
+
+type Hosts map[string]http.Handler
+
+func (h Hosts) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if handler := h[r.Host]; handler != nil {
+		handler.ServeHTTP(w, r)
+	} else {
+		http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
+	}
+}
+
+func main() {
+	// Host map
+	hosts := make(Hosts)
+
+	//-----
+	// API
+	//-----
+
+	api := echo.New()
+	api.Use(mw.Logger())
+	api.Use(mw.Recover())
+
+	hosts["api.localhost:1323"] = api
+
+	api.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "API")
+	})
+
+	//------
+	// Blog
+	//------
+
+	blog := echo.New()
+	api.Use(mw.Logger())
+	api.Use(mw.Recover())
+
+	hosts["blog.localhost:1323"] = blog
+
+	blog.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "Blog")
+	})
+
+	//---------
+	// Website
+	//---------
+
+	site := echo.New()
+	site.Use(mw.Logger())
+	site.Use(mw.Recover())
+
+	hosts["localhost:1323"] = site
+
+	site.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "Welcome!")
+	})
+
+	http.ListenAndServe(":1323", hosts)
+}

website/docs/index.md

@@ -1,6 +1,6 @@
 # Echo
 
-A fast and light web framework for Golang.
+A fast and unfancy micro web framework for Golang.
 
 ---
 
@@ -44,7 +44,7 @@ A fast and light web framework for Golang.
 $ go get github.com/labstack/echo
 ```
 
-###[Hello, World!](https://github.com/labstack/echo/tree/master/examples/hello)
+### Hello, World!
 
 Create `server.go` with the following content
 

website/docs/recipes/file-upload.md

@@ -4,7 +4,7 @@
 - Multiple form fields and files
 
 Use `req.ParseMultipartForm(16 << 20)` for manually parsing multipart form. It gives
-us option to specify maximum memory used while parsing the request body. 
+us an option to specify the maximum memory used while parsing the request body. 
 
 `server.go`
 

website/docs/recipes/subdomains.md

@@ -0,0 +1,75 @@
+## Subdomains
+
+`server.go`
+
+```go
+package main
+
+import (
+	"net/http"
+
+	"github.com/labstack/echo"
+	mw "github.com/labstack/echo/middleware"
+)
+
+type Hosts map[string]http.Handler
+
+func (h Hosts) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if handler := h[r.Host]; handler != nil {
+		handler.ServeHTTP(w, r)
+	} else {
+		http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
+	}
+}
+
+func main() {
+	// Host map
+	hosts := make(Hosts)
+
+	//-----
+	// API
+	//-----
+
+	api := echo.New()
+	api.Use(mw.Logger())
+	api.Use(mw.Recover())
+
+	hosts["api.localhost:1323"] = api
+
+	api.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "API")
+	})
+
+	//------
+	// Blog
+	//------
+
+	blog := echo.New()
+	api.Use(mw.Logger())
+	api.Use(mw.Recover())
+
+	hosts["blog.localhost:1323"] = blog
+
+	blog.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "Blog")
+	})
+
+	//------
+	// Main
+	//------
+
+	main := echo.New()
+	main.Use(mw.Logger())
+	main.Use(mw.Recover())
+
+	hosts["localhost:1323"] = main
+
+	main.Get("/", func(c *echo.Context) error {
+		return c.String(http.StatusOK, "Welcome!")
+	})
+
+	http.ListenAndServe(":1323", hosts)
+}
+```
+
+## [Source Code](https://github.com/labstack/echo/blob/master/recipes/subdomains)

website/mkdocs.yml

@@ -12,6 +12,7 @@ pages:
     - Streaming File Upload: recipes/streaming-file-upload.md
     - Streaming Response: recipes/streaming-response.md
     - WebSocket: recipes/websocket.md
+    - Subdomains: recipes/subdomains.md
     - Graceful Shutdown: recipes/graceful-shutdown.md
 extra:
   site_title: Echo, a fast and unfancy micro web framework for Golang.