diff --git a/src/packet/gtp1_utils.h b/src/packet/gtp1_utils.h index a460163..23be8c2 100644 --- a/src/packet/gtp1_utils.h +++ b/src/packet/gtp1_utils.h @@ -203,25 +203,22 @@ static inline uint16_t calc_gtp1_hdr_len(const char *data, uint16_t len) uint8_t next_ext_hdr = gtp_long->next_ext_hdr; uint16_t offset = sizeof(struct gtp1_hdr_long); - if (gtp1_hdr_get_flags(gtp) & GTP1_FLAG_EXT_HDR) + while (next_ext_hdr) { - while (next_ext_hdr) + if (offset + 1 > len) { - if (offset + 1 > len) - { - return 0; - } - uint8_t ext_hdr_len = *((char *)data + offset) * 4 - 2; - if (offset + ext_hdr_len > len) - { - return 0; - } - offset += ext_hdr_len + 1; // skip extension header - next_ext_hdr = *((char *)data + offset); + return 0; } - offset+=1; //next_ext_hdr==0 occupy 1 byte + uint16_t ext_hdr_len = *((char *)data + offset) * 4; + if (ext_hdr_len == 0 || offset + ext_hdr_len > len) + { + return 0; + } + offset += ext_hdr_len; // skip extension header + next_ext_hdr = *((char *)data + offset - 1); } - return offset; + + return offset; } else { diff --git a/src/packet/packet_parse.cpp b/src/packet/packet_parse.cpp index 46c9821..204c981 100644 --- a/src/packet/packet_parse.cpp +++ b/src/packet/packet_parse.cpp @@ -831,12 +831,18 @@ static inline const char *parse_gtp_u(struct packet *pkt, const char *data, uint return data; } + uint8_t next_proto = (((const uint8_t *)(data + hdr_len))[0]) >> 4; + if (next_proto != 4 && next_proto != 6) + { + // next_proto is not IPv4 or IPv6, this is not a normal GTP-U packet, fallback to UDP + return data; + } + struct raw_layer *layer = get_free_layer(pkt); if (unlikely(layer == NULL)) { return data; } - uint8_t next_proto = (((const uint8_t *)(data + hdr_len))[0]) >> 4; SET_LAYER(pkt, layer, LAYER_PROTO_GTP_U, hdr_len, data, len, 0); switch (next_proto) diff --git a/src/packet/test/gtest_gtp1_utils.cpp b/src/packet/test/gtest_gtp1_utils.cpp index 231dd1c..45b220a 100644 --- a/src/packet/test/gtest_gtp1_utils.cpp +++ b/src/packet/test/gtest_gtp1_utils.cpp @@ -186,15 +186,15 @@ TEST(GTP1_UTILS, C_SET) * TEID: 0x001e849a (2000026) */ -unsigned char gtp1_u[] = { +unsigned char gtp1_u1[] = { 0x30, 0xff, 0x00, 0x28, 0x00, 0x1e, 0x84, 0x9a}; -TEST(GTP1_UTILS, U_GET) +TEST(GTP1_UTILS, U1_GET) { - const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u; + const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u1; // GTP Fixed Header Length + GTPv1-U Optional Headers + GTPv1-U Extension Headers - EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u, sizeof(gtp1_u)) == 8); + EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u1, sizeof(gtp1_u1)) == 8); EXPECT_TRUE(gtp1_hdr_get_flags(hdr) == 0x30); EXPECT_TRUE(gtp1_hdr_get_version(hdr) == 1); EXPECT_TRUE(gtp1_hdr_get_proto(hdr) == 1); @@ -214,7 +214,7 @@ TEST(GTP1_UTILS, U_GET) printf("%s\n", buff); } -TEST(GTP1_UTILS, U_SET) +TEST(GTP1_UTILS, U1_SET) { char buff[8] = {0}; @@ -233,7 +233,82 @@ TEST(GTP1_UTILS, U_SET) gtp1_hdr_set_npdu(hdr, 0); gtp1_hdr_set_next_ext_type(hdr, 0); - EXPECT_TRUE(memcmp(buff, gtp1_u, 8) == 0); + EXPECT_TRUE(memcmp(buff, gtp1_u1, 8) == 0); +} + +/* + * User Datagram Protocol, Src Port: 2152, Dst Port: 2152 + * GPRS Tunneling Protocol + * Flags: 0x34 + * 001. .... = Version: GTP release 99 version (1) + * ...1 .... = Protocol type: GTP (1) + * .... 0... = Reserved: 0 + * .... .1.. = Is Next Extension Header present?: Yes + * .... ..0. = Is Sequence Number present?: No + * .... ...0 = Is N-PDU number present?: No + * Message Type: T-PDU (0xff) + * Length: 445 + * TEID: 0x01447453 (21263443) + * Next extension header type: PDU Session container (0x85) + * Extension header (PDU Session container) + * Extension Header Length: 1 + * PDU Session Container + * 0001 .... = PDU Type: UL PDU SESSION INFORMATION (1) + * .... 0000 = Spare: 0x0 + * 00.. .... = Spare: 0x0 + * ..00 0001 = QoS Flow Identifier (QFI): 1 + * Next extension header type: No more extension headers (0x00) + */ + +unsigned char gtp1_u2[] = { + 0x34, 0xff, 0x01, 0xbd, 0x01, 0x44, 0x74, 0x53, 0x00, 0x00, 0x00, 0x85, 0x01, 0x10, 0x01, 0x00}; + +TEST(GTP1_UTILS, U2_GET) +{ + const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u2; + + // GTP Fixed Header Length + GTPv1-U Optional Headers + GTPv1-U Extension Headers + EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u2, sizeof(gtp1_u2)) == 16); + EXPECT_TRUE(gtp1_hdr_get_flags(hdr) == 0x34); + EXPECT_TRUE(gtp1_hdr_get_version(hdr) == 1); + EXPECT_TRUE(gtp1_hdr_get_proto(hdr) == 1); + EXPECT_TRUE(gtp1_hdr_get_reserved(hdr) == 0); + EXPECT_TRUE(gtp1_hdr_get_ext_flag(hdr) == 1); + EXPECT_TRUE(gtp1_hdr_get_seq_flag(hdr) == 0); + EXPECT_TRUE(gtp1_hdr_get_npdu_flag(hdr) == 0); + EXPECT_TRUE(gtp1_hdr_get_msg_type(hdr) == 0xff); + EXPECT_TRUE(gtp1_hdr_get_msg_len(hdr) == 445); + EXPECT_TRUE(gtp1_hdr_get_teid(hdr) == 21263443); + EXPECT_TRUE(gtp1_hdr_get_seq(hdr) == 0); + EXPECT_TRUE(gtp1_hdr_get_npdu(hdr) == 0); + EXPECT_TRUE(gtp1_hdr_get_next_ext_type(hdr) == 0x85); + + char buff[1024] = {0}; + gtp1_hdr_to_str(hdr, buff, sizeof(buff)); + printf("%s\n", buff); +} + +TEST(GTP1_UTILS, U2_SET) +{ + char buff[16] = {0}; + + struct gtp1_hdr *hdr = (struct gtp1_hdr *)buff; + gtp1_hdr_set_flags(hdr, 0x34); + gtp1_hdr_set_version(hdr, 1); + gtp1_hdr_set_proto(hdr, 1); + gtp1_hdr_set_reserved(hdr, 0); + gtp1_hdr_set_ext_flag(hdr, 1); + gtp1_hdr_set_seq_flag(hdr, 0); + gtp1_hdr_set_npdu_flag(hdr, 0); + gtp1_hdr_set_msg_type(hdr, 0xff); + gtp1_hdr_set_msg_len(hdr, 445); + gtp1_hdr_set_teid(hdr, 21263443); + gtp1_hdr_set_seq(hdr, 0); + gtp1_hdr_set_npdu(hdr, 0); + gtp1_hdr_set_next_ext_type(hdr, 0x85); + + // not compare the extension header + EXPECT_TRUE(memcmp(buff, gtp1_u2, 12) == 0); } int main(int argc, char **argv) diff --git a/src/packet/test/gtest_packet_parse.cpp b/src/packet/test/gtest_packet_parse.cpp index 3446de7..5d1c1e0 100644 --- a/src/packet/test/gtest_packet_parse.cpp +++ b/src/packet/test/gtest_packet_parse.cpp @@ -2842,6 +2842,210 @@ TEST(PACKET_PARSE, ETH_IP4_TCP_PADDING) } #endif +/****************************************************************************** + * [Protocols in frame: eth:ethertype:ipv6:udp:gtp:ip:udp:data] + ****************************************************************************** + * + * Frame 1: 515 bytes on wire (4120 bits), 515 bytes captured (4120 bits) + * Ethernet II, Src: 00:00:00_00:03:1c (00:00:00:00:03:1c), Dst: HuaweiTechno_f4:fc:31 (3c:9d:56:f4:fc:31) + * Destination: HuaweiTechno_f4:fc:31 (3c:9d:56:f4:fc:31) + * Source: 00:00:00_00:03:1c (00:00:00:00:03:1c) + * Type: IPv6 (0x86dd) + * Internet Protocol Version 6, Src: 2408:8161:e100:10:0:16:3:a, Dst: 2408:8141:e0f0:1f08::4 + * 0110 .... = Version: 6 + * .... 1011 1000 .... .... .... .... .... = Traffic Class: 0xb8 (DSCP: EF PHB, ECN: Not-ECT) + * .... 1011 10.. .... .... .... .... .... = Differentiated Services Codepoint: Expedited Forwarding (46) + * .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0) + * .... 0100 0111 0100 0101 0011 = Flow Label: 0x47453 + * Payload Length: 461 + * Next Header: UDP (17) + * Hop Limit: 252 + * Source Address: 2408:8161:e100:10:0:16:3:a + * Destination Address: 2408:8141:e0f0:1f08::4 + * User Datagram Protocol, Src Port: 2152, Dst Port: 2152 + * Source Port: 2152 + * Destination Port: 2152 + * Length: 461 + * Checksum: 0x6312 [correct] + * [Calculated Checksum: 0x6312] + * [Checksum Status: Good] + * [Stream index: 0] + * [Timestamps] + * [Time since first frame: 0.000000000 seconds] + * [Time since previous frame: 0.000000000 seconds] + * UDP payload (453 bytes) + * GPRS Tunneling Protocol + * Flags: 0x34 + * 001. .... = Version: GTP release 99 version (1) + * ...1 .... = Protocol type: GTP (1) + * .... 0... = Reserved: 0 + * .... .1.. = Is Next Extension Header present?: Yes + * .... ..0. = Is Sequence Number present?: No + * .... ...0 = Is N-PDU number present?: No + * Message Type: T-PDU (0xff) + * Length: 445 + * TEID: 0x01447453 (21263443) + * Next extension header type: PDU Session container (0x85) + * Extension header (PDU Session container) + * Extension Header Length: 1 + * PDU Session Container + * 0001 .... = PDU Type: UL PDU SESSION INFORMATION (1) + * .... 0000 = Spare: 0x0 + * 00.. .... = Spare: 0x0 + * ..00 0001 = QoS Flow Identifier (QFI): 1 + * Next extension header type: No more extension headers (0x00) + * Internet Protocol Version 4, Src: 10.67.71.179, Dst: 120.225.133.208 + * 0100 .... = Version: 4 + * .... 0101 = Header Length: 20 bytes (5) + * Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) + * 0000 00.. = Differentiated Services Codepoint: Default (0) + * .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0) + * Total Length: 437 + * Identification: 0x51bf (20927) + * 000. .... = Flags: 0x0 + * 0... .... = Reserved bit: Not set + * .0.. .... = Don't fragment: Not set + * ..0. .... = More fragments: Not set + * ...0 0000 0000 0000 = Fragment Offset: 0 + * Time to Live: 64 + * Protocol: UDP (17) + * Header Checksum: 0xd6d1 [correct] + * [Header checksum status: Good] + * [Calculated Checksum: 0xd6d1] + * Source Address: 10.67.71.179 + * Destination Address: 120.225.133.208 + * User Datagram Protocol, Src Port: 11102, Dst Port: 2152 + * Source Port: 11102 + * Destination Port: 2152 + * Length: 417 + * Checksum: 0x3bc2 [correct] + * [Calculated Checksum: 0x3bc2] + * [Checksum Status: Good] + * [Stream index: 1] + * [Timestamps] + * [Time since first frame: 0.000000000 seconds] + * [Time since previous frame: 0.000000000 seconds] + * UDP payload (409 bytes) + * Data (409 bytes) + * Data [truncated]: 226f2fcaba48055d4b5500030000019183000104090002810901000000110102010014100000011a3e425e9ae48c6929daebcd0e3cbd830402320bebc2000402270000000d02022800050215000a001800051c3503021612e5050217000000006d9f8ccd020218010402140000088 + * [Length: 409] + */ + +unsigned char data17[] = { + 0x3c, 0x9d, 0x56, 0xf4, 0xfc, 0x31, 0x00, 0x00, 0x00, 0x00, 0x03, 0x1c, 0x86, 0xdd, 0x6b, 0x84, 0x74, 0x53, 0x01, 0xcd, 0x11, 0xfc, 0x24, 0x08, 0x81, 0x61, + 0xe1, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x16, 0x00, 0x03, 0x00, 0x0a, 0x24, 0x08, 0x81, 0x41, 0xe0, 0xf0, 0x1f, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x04, 0x08, 0x68, 0x08, 0x68, 0x01, 0xcd, 0x63, 0x12, 0x34, 0xff, 0x01, 0xbd, 0x01, 0x44, 0x74, 0x53, 0x00, 0x00, 0x00, 0x85, 0x01, 0x10, 0x01, 0x00, + 0x45, 0x00, 0x01, 0xb5, 0x51, 0xbf, 0x00, 0x00, 0x40, 0x11, 0xd6, 0xd1, 0x0a, 0x43, 0x47, 0xb3, 0x78, 0xe1, 0x85, 0xd0, 0x2b, 0x5e, 0x08, 0x68, 0x01, 0xa1, + 0x3b, 0xc2, 0x22, 0x6f, 0x2f, 0xca, 0xba, 0x48, 0x05, 0x5d, 0x4b, 0x55, 0x00, 0x03, 0x00, 0x00, 0x01, 0x91, 0x83, 0x00, 0x01, 0x04, 0x09, 0x00, 0x02, 0x81, + 0x09, 0x01, 0x00, 0x00, 0x00, 0x11, 0x01, 0x02, 0x01, 0x00, 0x14, 0x10, 0x00, 0x00, 0x01, 0x1a, 0x3e, 0x42, 0x5e, 0x9a, 0xe4, 0x8c, 0x69, 0x29, 0xda, 0xeb, + 0xcd, 0x0e, 0x3c, 0xbd, 0x83, 0x04, 0x02, 0x32, 0x0b, 0xeb, 0xc2, 0x00, 0x04, 0x02, 0x27, 0x00, 0x00, 0x00, 0x0d, 0x02, 0x02, 0x28, 0x00, 0x05, 0x02, 0x15, + 0x00, 0x0a, 0x00, 0x18, 0x00, 0x05, 0x1c, 0x35, 0x03, 0x02, 0x16, 0x12, 0xe5, 0x05, 0x02, 0x17, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x9f, 0x8c, 0xcd, 0x02, 0x02, + 0x18, 0x01, 0x04, 0x02, 0x14, 0x00, 0x00, 0x08, 0x80, 0x06, 0x02, 0x03, 0x00, 0x00, 0x00, 0x0c, 0x31, 0x30, 0x2e, 0x36, 0x37, 0x2e, 0x37, 0x31, 0x2e, 0x31, + 0x37, 0x39, 0x03, 0x02, 0x05, 0xdc, 0x01, 0x06, 0x02, 0x06, 0x00, 0x00, 0x00, 0x0e, 0x31, 0x31, 0x32, 0x2e, 0x31, 0x31, 0x31, 0x2e, 0x35, 0x35, 0x2e, 0x32, + 0x34, 0x33, 0x03, 0x02, 0x08, 0xdc, 0x01, 0x01, 0x02, 0x09, 0x00, 0x14, 0xf1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe3, 0x6b, + 0x65, 0xf6, 0xf9, 0x33, 0xcc, 0xa9, 0x06, 0x02, 0x10, 0x00, 0x00, 0x00, 0x0d, 0x32, 0x31, 0x31, 0x2e, 0x39, 0x31, 0x2e, 0x31, 0x36, 0x36, 0x2e, 0x34, 0x34, + 0x03, 0x02, 0x11, 0x4e, 0x21, 0x06, 0x02, 0x1b, 0x00, 0x00, 0x00, 0xb8, 0x32, 0x31, 0x37, 0x36, 0x7c, 0x31, 0x30, 0x2e, 0x36, 0x37, 0x2e, 0x37, 0x31, 0x2e, + 0x31, 0x37, 0x39, 0x7c, 0x30, 0x7c, 0x35, 0x36, 0x33, 0x32, 0x31, 0x7c, 0x31, 0x31, 0x32, 0x2e, 0x31, 0x31, 0x31, 0x2e, 0x35, 0x35, 0x2e, 0x32, 0x34, 0x33, + 0x7c, 0x30, 0x7c, 0x35, 0x36, 0x33, 0x32, 0x31, 0x7c, 0x32, 0x31, 0x31, 0x2e, 0x39, 0x31, 0x2e, 0x31, 0x36, 0x36, 0x2e, 0x34, 0x34, 0x7c, 0x32, 0x30, 0x30, + 0x30, 0x31, 0x7c, 0x46, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, + 0x30, 0x45, 0x33, 0x36, 0x42, 0x36, 0x35, 0x46, 0x36, 0x46, 0x39, 0x33, 0x33, 0x43, 0x43, 0x41, 0x39, 0x7c, 0x32, 0x34, 0x30, 0x38, 0x3a, 0x38, 0x34, 0x34, + 0x62, 0x3a, 0x31, 0x38, 0x33, 0x30, 0x3a, 0x36, 0x31, 0x63, 0x62, 0x3a, 0x65, 0x63, 0x34, 0x32, 0x3a, 0x37, 0x65, 0x35, 0x32, 0x3a, 0x65, 0x65, 0x37, 0x38, + 0x3a, 0x65, 0x32, 0x61, 0x38, 0x7c, 0x30, 0x7c, 0x38, 0x38, 0x38, 0x39, 0x7c, 0x32, 0x34, 0x30, 0x38, 0x3a, 0x38, 0x37, 0x33, 0x64, 0x3a, 0x31, 0x30, 0x3a, + 0x34, 0x3a, 0x38, 0x30, 0x30, 0x3a, 0x3a, 0x34, 0x7c, 0x32, 0x30, 0x30, 0x30, 0x31, 0x04, 0x09, 0x02, 0x00, 0x00, 0x01, 0xf8}; + +#if 1 +TEST(PACKET_PARSE, ETH_IP6_UDP_GTP_IP4_UDP) +{ + char buffer[256]; + struct packet handler; + + memset(&handler, 0, sizeof(handler)); + const char *payload = packet_parse(&handler, (const char *)data17, sizeof(data17)); + EXPECT_TRUE(payload != nullptr); + EXPECT_TRUE((char *)payload - (char *)&data17 == 14 + 40 + 8 + 16 + 20 + 8); + packet_dump_stdio(&handler); + + /****************************************************** + * packet_get_outermost/innermost_layer + ******************************************************/ + + // LAYER_PROTO_ETHER + const struct raw_layer *outer_eth_record = packet_get_outermost_raw_layer(&handler, LAYER_PROTO_ETHER); + const struct raw_layer *inner_eth_record = packet_get_innermost_raw_layer(&handler, LAYER_PROTO_ETHER); + + EXPECT_TRUE(outer_eth_record != nullptr); + EXPECT_TRUE(inner_eth_record != nullptr); + EXPECT_TRUE(outer_eth_record == inner_eth_record); + EXPECT_TRUE(outer_eth_record->hdr_offset == 0); + EXPECT_TRUE(outer_eth_record->hdr_len == 14); + EXPECT_TRUE(outer_eth_record->pld_len == 501); + + // LAYER_PROTO_IPV6 + const struct raw_layer *outer_ipv6_record = packet_get_outermost_raw_layer(&handler, LAYER_PROTO_IPV6); + const struct raw_layer *inner_ipv6_record = packet_get_innermost_raw_layer(&handler, LAYER_PROTO_IPV6); + + EXPECT_TRUE(outer_ipv6_record != nullptr); + EXPECT_TRUE(inner_ipv6_record != nullptr); + EXPECT_TRUE(outer_ipv6_record == inner_ipv6_record); + EXPECT_TRUE(outer_ipv6_record->hdr_offset == 14); + EXPECT_TRUE(outer_ipv6_record->hdr_len == 40); + EXPECT_TRUE(outer_ipv6_record->pld_len == 461); + + // LAYER_PROTO_UDP + const struct raw_layer *outer_udp_record = packet_get_outermost_raw_layer(&handler, LAYER_PROTO_UDP); + + EXPECT_TRUE(outer_udp_record != nullptr); + EXPECT_TRUE(outer_udp_record->hdr_offset == 54); + EXPECT_TRUE(outer_udp_record->hdr_len == 8); + EXPECT_TRUE(outer_udp_record->pld_len == 453); + + // LAYER_PROTO_GTP_U + const struct raw_layer *outer_gtpu_record = packet_get_outermost_raw_layer(&handler, LAYER_PROTO_GTP_U); + const struct raw_layer *inner_gtpu_record = packet_get_innermost_raw_layer(&handler, LAYER_PROTO_GTP_U); + + EXPECT_TRUE(outer_gtpu_record != nullptr); + EXPECT_TRUE(inner_gtpu_record != nullptr); + EXPECT_TRUE(outer_gtpu_record == inner_gtpu_record); + EXPECT_TRUE(outer_gtpu_record->hdr_offset == 62); + EXPECT_TRUE(outer_gtpu_record->hdr_len == 16); + EXPECT_TRUE(outer_gtpu_record->pld_len == 437); + + // LAYER_PROTO_IPV4 + const struct raw_layer *inner_ipv4_record = packet_get_innermost_raw_layer(&handler, LAYER_PROTO_IPV4); + const struct raw_layer *outer_ipv4_record = packet_get_outermost_raw_layer(&handler, LAYER_PROTO_IPV4); + + EXPECT_TRUE(inner_ipv4_record != nullptr); + EXPECT_TRUE(outer_ipv4_record != nullptr); + EXPECT_TRUE(inner_ipv4_record == outer_ipv4_record); + EXPECT_TRUE(inner_ipv4_record->hdr_offset == 78); + EXPECT_TRUE(inner_ipv4_record->hdr_len == 20); + EXPECT_TRUE(inner_ipv4_record->pld_len == 417); + + // LAYER_PROTO_UDP + const struct raw_layer *inner_udp_record = packet_get_innermost_raw_layer(&handler, LAYER_PROTO_UDP); + + EXPECT_TRUE(inner_udp_record != nullptr); + EXPECT_TRUE(inner_udp_record->hdr_offset == 98); + EXPECT_TRUE(inner_udp_record->hdr_len == 8); + EXPECT_TRUE(inner_udp_record->pld_len == 409); + + /****************************************************** + * packet_get_outermost/innermost_tuple4 + ******************************************************/ + + struct tuple4 outer_tuple4; + struct tuple4 inner_tuple4; + EXPECT_TRUE(packet_get_outermost_tuple4(&handler, &outer_tuple4) == 0); + EXPECT_TRUE(packet_get_innermost_tuple4(&handler, &inner_tuple4) == 0); + memset(buffer, 0, sizeof(buffer)); + tuple4_to_str(&outer_tuple4, buffer, sizeof(buffer)); + EXPECT_STREQ(buffer, "2408:8161:e100:10:0:16:3:a:2152-2408:8141:e0f0:1f08::4:2152"); + memset(buffer, 0, sizeof(buffer)); + tuple4_to_str(&inner_tuple4, buffer, sizeof(buffer)); + EXPECT_STREQ(buffer, "10.67.71.179:11102-120.225.133.208:2152"); +} +#endif + int main(int argc, char **argv) { ::testing::InitGoogleTest(&argc, argv);