Added streaming JSON example

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

examples/stream/server.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"net/http"
+	"time"
+
+	"encoding/json"
+
+	"github.com/labstack/echo"
+)
+
+type (
+	Geolocation struct {
+		Altitude  float64
+		Latitude  float64
+		Longitude float64
+	}
+)
+
+var (
+	locations = []Geolocation{
+		{-97, 37.819929, -122.478255},
+		{1899, 39.096849, -120.032351},
+		{2619, 37.865101, -119.538329},
+		{42, 33.812092, -117.918974},
+		{15, 37.77493, -122.419416},
+	}
+)
+
+func main() {
+	e := echo.New()
+	e.Get("/stream", func(c *echo.Context) error {
+		c.Response().Header().Set(echo.ContentType, echo.ApplicationJSON)
+		c.Response().WriteHeader(http.StatusOK)
+		for _, l := range locations {
+			if err := json.NewEncoder(c.Response()).Encode(l); err != nil {
+				return err
+			}
+			c.Response().Flush()
+			time.Sleep(1 * time.Second)
+		}
+		return nil
+	})
+	e.Run(":1323")
+}