diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0dfc2f2..eaef82b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,8 @@ set(CMAKE_C_STANDARD 11)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} -Wall)
 
+add_definitions(-D_GNU_SOURCE)
+
 enable_testing()
 add_subdirectory(vendor)
 add_subdirectory(common)
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index d4e447d..851bae5 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -1,3 +1,11 @@
 add_library(common src/tfe_stat.cpp src/tfe_utils.cpp src/tfe_future.cpp src/tfe_http.cpp src/tfe_plugin.cpp src/tfe_rpc.cpp)
 target_include_directories(common PUBLIC ${CMAKE_CURRENT_LIST_DIR}/include)
 target_link_libraries(common MESA_handle_logger libevent-static libevent-static-openssl libevent-static-pthreads)
+
+### UNITTEST CASE
+add_executable(test-addr test/test_addr.cpp)
+target_include_directories(test-addr PRIVATE include)
+target_link_libraries(test-addr gtest)
+
+include(GoogleTest)
+gtest_discover_tests(test-addr)
diff --git a/common/include/tfe_types.h b/common/include/tfe_types.h
index 9e94686..9d5dfc2 100644
--- a/common/include/tfe_types.h
+++ b/common/include/tfe_types.h
@@ -1,7 +1,10 @@
 #pragma once
 
+#include <features.h>
+#include <stdio.h>
 #include <stdint.h>
 #include <netinet/in.h>    //defines struct in_addr
+#include <arpa/inet.h>
 
 /* network-order */
 struct tfe_stream_addr_tuple4_v4
@@ -138,3 +141,35 @@ struct tfe_stream_addr
 		unsigned char paddr[0];
 	};
 };
+
+static inline char * tfe_stream_addr_to_str(const struct tfe_stream_addr * addr)
+{
+	char * __str_ret = NULL;
+	if (addr->addrtype == TFE_ADDR_STREAM_TUPLE4_V4)
+	{
+		const struct tfe_stream_addr_tuple4_v4 * tuple4_v4 = addr->tuple4_v4;
+		char __src_addr[INET_ADDRSTRLEN];
+		char __dst_addr[INET_ADDRSTRLEN];
+		uint16_t __src_port = ntohs((uint16_t) tuple4_v4->source);
+		uint16_t __dst_port = ntohs((uint16_t) tuple4_v4->dest);
+
+		inet_ntop(AF_INET, &tuple4_v4->saddr, __src_addr, sizeof(__src_addr));
+		inet_ntop(AF_INET, &tuple4_v4->daddr, __dst_addr, sizeof(__dst_addr));
+		asprintf(&__str_ret, "%s %s %u %u", __src_addr, __dst_addr, __src_port, __dst_port);
+	}
+
+	if(addr->addrtype == TFE_ADDR_STREAM_TUPLE4_V6)
+	{
+		const struct tfe_stream_addr_tuple4_v6 * tuple4_v6 = addr->tuple4_v6;
+		char __src_addr[INET6_ADDRSTRLEN];
+		char __dst_addr[INET6_ADDRSTRLEN];
+		uint16_t __src_port = ntohs((uint16_t) tuple4_v6->source);
+		uint16_t __dst_port = ntohs((uint16_t) tuple4_v6->dest);
+
+		inet_ntop(AF_INET6, &tuple4_v6->saddr, __src_addr, sizeof(__src_addr));
+		inet_ntop(AF_INET6, &tuple4_v6->daddr, __dst_addr, sizeof(__dst_addr));
+		asprintf(&__str_ret, "%s %s %u %u", __src_addr, __dst_addr, __src_port, __dst_port);
+	}
+
+	return __str_ret;
+}
diff --git a/common/test/test_addr.cpp b/common/test/test_addr.cpp
new file mode 100644
index 0000000..0d531c3
--- /dev/null
+++ b/common/test/test_addr.cpp
@@ -0,0 +1,33 @@
+
+#include <gtest/gtest.h>
+#include <tfe_types.h>
+#include <stdlib.h>
+
+TEST(TfeStreamAddrToStr, StreamTuple4)
+{
+	auto * __stream_addr = (struct tfe_stream_addr *) malloc(sizeof(struct tfe_stream_addr) +
+		sizeof(struct tfe_stream_addr_tuple4_v4));
+
+	struct tfe_stream_addr_ipv4 * st_addr_v4 = __stream_addr->ipv4;
+	__stream_addr->addrtype = TFE_ADDR_STREAM_TUPLE4_V4;
+	__stream_addr->addrlen = sizeof(struct tfe_stream_addr_tuple4_v4);
+
+	/* 192.168.100.50 192.168.100.100 10080 80 */
+	st_addr_v4->saddr.s_addr = 0x3264a8c0;
+	st_addr_v4->source = 24615;
+	st_addr_v4->daddr.s_addr = 0x6464a8c0;
+	st_addr_v4->dest = 20480;
+
+	const char * __sample = "192.168.100.50 192.168.100.100 10080 80";
+	char * __result = tfe_stream_addr_to_str(__stream_addr);
+
+	EXPECT_STREQ(__sample, __result);
+	free(__result);
+	free(__stream_addr);
+}
+
+int main(int argc, char ** argv)
+{
+	::testing::InitGoogleTest(&argc, argv);
+	return RUN_ALL_TESTS();
+}