diff --git a/CMakeLists.txt b/CMakeLists.txt
index 739da1d..eee1630 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,6 +93,9 @@ if (NOT MSVC)
     check_symbol_exists(timezone "time.h" HAVE_TIMEZONE)
     check_symbol_exists(tzset "time.h" HAVE_TZSET)
 endif()
+if (NOT WIN32)
+    check_symbol_exists(clock_gettime "time.h" HAVE_CLOCK_GETTIME)
+endif()
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/utils_config.h.in" "${CMAKE_CURRENT_BINARY_DIR}/utils_config.h")
 
 if ("${CMAKE_C_COMPILER_ID}" STREQUAL GNU)
diff --git a/http_client.cpp b/http_client.cpp
index 0260794..31f081a 100644
--- a/http_client.cpp
+++ b/http_client.cpp
@@ -1028,3 +1028,18 @@ std::string dumpCookie(std::map<std::string, std::string> cookie) {
     }
     return re;
 }
+
+std::string Request::toUri() {
+    std::string re;
+    if (this->https) {
+        re += "https://";
+    } else {
+        re += "http://";
+    }
+    re += this->host;
+    if (this->port != (this->https ? "https" : "http")) {
+        re += ":" + this->port;
+    }
+    re += this->path;
+    return re;
+}
diff --git a/http_client.h b/http_client.h
index fa2fd66..1685579 100644
--- a/http_client.h
+++ b/http_client.h
@@ -193,6 +193,7 @@ public:
     std::string path;
     std::string method;
     CookiesBase* cookies = nullptr;
+    std::string toUri();
 private:
     HttpBody* body = nullptr;
 };
diff --git a/time_util.cpp b/time_util.cpp
index c51bcf7..b6e41bc 100644
--- a/time_util.cpp
+++ b/time_util.cpp
@@ -63,3 +63,18 @@ time_t time_util::timegm(struct tm* tm) {
     return now + get_timezone();
 #endif
 }
+
+time_t time_util::time_ns() {
+#if _WIN32
+    FILETIME ft;
+    GetSystemTimeAsFileTime(&ft);
+    time_t t = ((size_t)ft.dwHighDateTime << 32) | (size_t)ft.dwLowDateTime;
+    return t;
+#elif HAVE_CLOCK_GETTIME
+    struct timespec ts;
+    clock_gettime(CLOCK_REALTIME, &ts);
+    return ts.tv_sec * 1000000000LL + ts.tv_nsec;
+#else
+    return time(NULL) * 1000000000LL;
+#endif
+}
diff --git a/time_util.h b/time_util.h
index 7d7b38b..dfc5193 100644
--- a/time_util.h
+++ b/time_util.h
@@ -17,5 +17,6 @@ namespace time_util {
     char* strptime(const char* s, const char* format, struct tm* tm);
     long get_timezone();
     time_t timegm(struct tm* tm);
+    time_t time_ns();
 }
 #endif
diff --git a/utils_config.h.in b/utils_config.h.in
index fe92201..a29b5b9 100644
--- a/utils_config.h.in
+++ b/utils_config.h.in
@@ -26,3 +26,4 @@
 #cmakedefine HAVE_TIMEZONE @HAVE_TIMEZONE@
 #cmakedefine HAVE_TZSET @HAVE_TZSET@
 #cmakedefine HAVE_FPRINTF_S @HAVE_FPRINTF_S@
+#cmakedefine HAVE_CLOCK_GETTIME @HAVE_CLOCK_GETTIME@