add simpleHTTPServer example (similar to python -m SimpleHTTPServer)

Author: SimonWaldherr

beginner/simpleHTTPServer/README.md

@@ -0,0 +1,44 @@
+# simpleHTTPServer
+
+many may have used the simple python web server SimpleHTTPServer:
+
+```
+python -m SimpleHTTPServer 8080
+```
+
+the same functionality can be recreated in Go with just a few lines of code:
+
+```go
+package main
+
+import (
+    "log"
+    "net/http"
+    "os"
+)
+
+func Log(handler http.Handler) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        log.Printf("%s %s %s\n", r.RemoteAddr, r.Method, r.URL)
+        handler.ServeHTTP(w, r)
+    })
+}
+
+
+func main() {
+    // default settings
+    port := "8080"
+    dir := os.Getenv("PWD")
+
+    // get settings from command line
+    if len(os.Args) > 1 {
+        port = os.Args[1]
+        if len(os.Args) > 2 {
+            dir = os.Args[2]
+        }
+    }
+
+    // start web server with logging
+    log.Fatal(http.ListenAndServe(":"+port, Log(http.FileServer(http.Dir(dir)))))
+}
+```

beginner/simpleHTTPServer/simpleHTTPServer.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+    "log"
+    "net/http"
+    "os"
+)
+
+func Log(handler http.Handler) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        log.Printf("%s %s %s\n", r.RemoteAddr, r.Method, r.URL)
+        handler.ServeHTTP(w, r)
+    })
+}
+
+
+func main() {
+    // default settings
+    port := "8080"
+    dir := os.Getenv("PWD")
+
+    // get settings from command line
+    if len(os.Args) > 1 {
+        port = os.Args[1]
+        if len(os.Args) > 2 {
+            dir = os.Args[2]
+        }
+    }
+
+    // start web server with logging
+    log.Fatal(http.ListenAndServe(":"+port, Log(http.FileServer(http.Dir(dir)))))
+}