Logging proxy requests in verbose mode (fixes #173)

docs/log-files.adoc

@@ -42,6 +42,7 @@ The following statuses are available:
 | INVALID_VNC_REQUEST_URL | VNC request URL do not contain enough information to determine upstream host 
 | INVALID_VIDEO_REQUEST_URL | Video request URL do not contain enough information to determine upstream host 
 | INVALID_URL | Session ID does not contain information about host where it was created 
+| PROXYING | Proxying Selenium request (shown in verbose mode only) 
 | PROXYING_TO_VNC | Starting to proxy VNC traffic 
 | PROXYING_VIDEO | Starting to proxy video from upstream host 
 | QUOTA_INFO_REQUESTED | Quota information request arrived 

proxy.go

@@ -333,8 +333,11 @@ func proxy(r *http.Request) {
 			r.URL.Host = h.net()
 			r.URL.Path = proxyPath
 			fragments := strings.Split(proxyPath, "/")
-			if r.Method == "DELETE" && len(fragments) == sessPart+1 {
-				sess := fragments[sessPart]
+			sess := fragments[sessPart]
+			if verbose {
+				log.Printf("[%d] [-] [PROXYING] [-] [%s] [-] [%s] [%s] [-] [%s]\n", id, remote, h.net(), sess, proxyPath)
+			}
+			if r.Method == http.MethodDelete && len(fragments) == sessPart+1 {
 				log.Printf("[%d] [-] [SESSION_DELETED] [-] [%s] [-] [%s] [%s] [-] [-]\n", id, remote, h.net(), sess)
 			}
 			return

proxy_test.go

@@ -75,6 +75,7 @@ func init() {
 	srv = httptest.NewServer(mux())
 	listen = hostport(srv.URL)
 	gitRevision = "test-revision"
+	verbose = true
 }
 
 func gridrouter(p string) string {