Add remaining (sans spawn, testbench)

httpctx/httpctx.go

@@ -0,0 +1,30 @@
+package httpctx
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+)
+
+func helloHandler(w http.ResponseWriter, req *http.Request) {
+	log.Println("hello handler started")
+	ctx := req.Context()
+	defer log.Println("hello handler finishing")
+
+	select {
+	case <-time.After(10 * time.Second):
+		fmt.Fprintln(w, "hello there!")
+	case <-ctx.Done():
+		err := ctx.Err()
+		log.Println("hello error:", err.Error())
+		internalError := http.StatusInternalServerError
+		http.Error(w, err.Error(), internalError)
+	}
+}
+
+func HttpCtx() {
+	log.Println("Server listening on :8002")
+	http.HandleFunc("/hello", helloHandler)
+	http.ListenAndServe(":8002", nil)
+}