stellar-stellar/src/session/test/gtest_state_tcp_opening_to_active.cpp

// TCP state machine test: opening -> active
#include <gtest/gtest.h>

#include "session.h"
#include "session_manager.h"

#include "test_packets.h"

struct session_manager_options opts = {
    // max session number
    .max_tcp_session_num = 256,
    .max_udp_session_num = 256,

    // session overload
    .tcp_overload_evict_old_sess = 1, // 1: evict old session, 0: bypass new session
    .udp_overload_evict_old_sess = 1, // 1: evict old session, 0: bypass new session

    // tcp timeout
    .tcp_init_timeout = 1,
    .tcp_handshake_timeout = 2,
    .tcp_data_timeout = 3,
    .tcp_half_closed_timeout = 4,
    .tcp_time_wait_timeout = 5,
    .tcp_discard_timeout = 6,
    .tcp_unverified_rst_timeout = 7,

    // udp timeout
    .udp_data_timeout = 8,

    // duplicate packet filter
    .duplicated_packet_filter_enable = 1,
    .duplicated_packet_filter_capacity = 1000,
    .duplicated_packet_filter_timeout = 10,
    .duplicated_packet_filter_error_rate = 0.0001,

    // evicted session filter
    .evicted_session_filter_enable = 1,
    .evicted_session_filter_capacity = 1000,
    .evicted_session_filter_timeout = 10,
    .evicted_session_filter_error_rate = 0.0001,

    // TCP Reassembly
    .tcp_reassembly_enable = 1,
    .tcp_reassembly_max_timeout = 60000,
    .tcp_reassembly_max_segments = 0,
    .tcp_reassembly_max_bytes = 0,
};

/******************************************************************************
 * case: TCP opening -> active (by C2S DATA)
 ******************************************************************************/

#if 1
TEST(TCP_OPENING_TO_ACTIVE, BY_SYN_C2S_DATA)
{
    char buffer[1024] = {0};
    struct packet pkt;
    struct session *sess = NULL;
    struct session_manager *mgr = NULL;
    struct session_manager_stat *stat = NULL;

    mgr = session_manager_new(&opts, 1);
    EXPECT_TRUE(mgr != NULL);

    // C2S SYN Packet
    printf("\n=> Packet Parse: TCP C2S SYN packet\n");
    packet_parse(&pkt, (const char *)tcp_pkt1_c2s_syn, sizeof(tcp_pkt1_c2s_syn));
    printf("<= Packet Parse: done\n\n");

    // lookup session
    EXPECT_TRUE(session_manager_lookup_session(mgr, &pkt) == NULL);
    // new session
    sess = session_manager_new_session(mgr, &pkt, 1);
    EXPECT_TRUE(sess);

    // C2S DATA Packet
    printf("\n=> Packet Parse: TCP C2S DATA packet\n");
    packet_parse(&pkt, (const char *)tcp_pkt4_c2s_http_req, sizeof(tcp_pkt4_c2s_http_req));
    printf("<= Packet Parse: done\n\n");

    // lookup session
    sess = session_manager_lookup_session(mgr, &pkt);
    EXPECT_TRUE(sess);
    // update session
    EXPECT_TRUE(session_manager_update_session(mgr, sess, &pkt, 2) == 0);

    EXPECT_TRUE(session_get_id(sess) != 0);
    tuple6_to_str(session_get0_key(sess), buffer, sizeof(buffer));
    EXPECT_STREQ(buffer, "192.168.38.105:60111 -> 93.184.216.34:80, proto: 6, domain: 0");
    EXPECT_TRUE(session_get_key_dir(sess) == SESSION_DIR_C2S);
    EXPECT_TRUE(session_get_state(sess) == SESSION_STATE_ACTIVE);
    EXPECT_TRUE(session_get_type(sess) == SESSION_TYPE_TCP);
    EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_NO);
    EXPECT_TRUE(session_get_closing_reason(sess) == 0);
    EXPECT_TRUE(session_get_c2s_bytes(sess) == 78 + 145);
    EXPECT_TRUE(session_get_s2c_bytes(sess) == 0);
    EXPECT_TRUE(session_get_c2s_packets(sess) == 1 + 1);
    EXPECT_TRUE(session_get_s2c_packets(sess) == 0);
    EXPECT_TRUE(session_get_new_time(sess) == 1);
    EXPECT_TRUE(session_get_last_time(sess) == 2);
    EXPECT_TRUE(session_get0_cur_pkt(sess) == &pkt);
    EXPECT_TRUE(session_get_cur_dir(sess) == SESSION_DIR_C2S);
    EXPECT_TRUE(session_get0_c2s_1st_pkt(sess) != NULL);
    EXPECT_TRUE(session_get0_s2c_1st_pkt(sess) == NULL);
    session_dump(sess);

    // check stat
    session_manager_print_stat(mgr);
    stat = session_manager_get_stat(mgr);
    EXPECT_TRUE(stat);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_used == 1);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_opening == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_active == 1);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_closing == 0);

    // expire session
    EXPECT_TRUE(session_manager_get_expired_session(mgr, 2 + opts.tcp_data_timeout) == NULL);
    sess = session_manager_get_expired_session(mgr, 2 + opts.tcp_data_timeout + opts.tcp_data_timeout);
    EXPECT_TRUE(sess);
    EXPECT_TRUE(session_get_state(sess) == SESSION_STATE_CLOSED);
    EXPECT_TRUE(session_get_closing_reason(sess) == CLOSING_BY_TIMEOUT);
    session_dump(sess);
    // free session
    session_manager_free_session(mgr, sess);

    // check stat
    session_manager_print_stat(mgr);
    stat = session_manager_get_stat(mgr);
    EXPECT_TRUE(stat);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_used == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_opening == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_active == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_closing == 0);

    session_manager_free(mgr);
}
#endif

/******************************************************************************
 * case: TCP opening -> active (by S2C DATA)
 ******************************************************************************/

#if 1
TEST(TCP_OPENING_TO_ACTIVE, BY_SYNACK_S2C_DATA)
{
    char buffer[1024] = {0};
    struct packet pkt;
    struct session *sess = NULL;
    struct session_manager *mgr = NULL;
    struct session_manager_stat *stat = NULL;

    mgr = session_manager_new(&opts, 1);
    EXPECT_TRUE(mgr != NULL);

    // S2C SYNACK Packet
    printf("\n=> Packet Parse: TCP S2C SYNACK packet\n");
    packet_parse(&pkt, (const char *)tcp_pkt2_s2c_syn_ack, sizeof(tcp_pkt2_s2c_syn_ack));
    printf("<= Packet Parse: done\n\n");

    // lookup session
    EXPECT_TRUE(session_manager_lookup_session(mgr, &pkt) == NULL);
    // new session
    sess = session_manager_new_session(mgr, &pkt, 1);
    EXPECT_TRUE(sess);

    // S2C DATA Packet
    printf("\n=> Packet Parse: TCP S2C DATA packet\n");
    packet_parse(&pkt, (const char *)tcp_pkt6_s2c_http_resq_1, sizeof(tcp_pkt6_s2c_http_resq_1));
    printf("<= Packet Parse: done\n\n");

    // lookup session
    sess = session_manager_lookup_session(mgr, &pkt);
    EXPECT_TRUE(sess);
    // update session
    EXPECT_TRUE(session_manager_update_session(mgr, sess, &pkt, 2) == 0);

    EXPECT_TRUE(session_get_id(sess) != 0);
    tuple6_to_str(session_get0_key(sess), buffer, sizeof(buffer));
    EXPECT_STREQ(buffer, "93.184.216.34:80 -> 192.168.38.105:60111, proto: 6, domain: 0");
    EXPECT_TRUE(session_get_key_dir(sess) == SESSION_DIR_S2C);
    EXPECT_TRUE(session_get_state(sess) == SESSION_STATE_ACTIVE);
    EXPECT_TRUE(session_get_type(sess) == SESSION_TYPE_TCP);
    EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_NO);
    EXPECT_TRUE(session_get_closing_reason(sess) == 0);
    EXPECT_TRUE(session_get_c2s_bytes(sess) == 0);
    EXPECT_TRUE(session_get_s2c_bytes(sess) == 74 + 1354);
    EXPECT_TRUE(session_get_c2s_packets(sess) == 0);
    EXPECT_TRUE(session_get_s2c_packets(sess) == 1 + 1);
    EXPECT_TRUE(session_get_new_time(sess) == 1);
    EXPECT_TRUE(session_get_last_time(sess) == 2);
    EXPECT_TRUE(session_get0_cur_pkt(sess) == &pkt);
    EXPECT_TRUE(session_get_cur_dir(sess) == SESSION_DIR_S2C);
    EXPECT_TRUE(session_get0_c2s_1st_pkt(sess) == NULL);
    EXPECT_TRUE(session_get0_s2c_1st_pkt(sess) != NULL);
    session_dump(sess);

    // check stat
    session_manager_print_stat(mgr);
    stat = session_manager_get_stat(mgr);
    EXPECT_TRUE(stat);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_used == 1);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_opening == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_active == 1);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_closing == 0);

    // expire session
    EXPECT_TRUE(session_manager_get_expired_session(mgr, 2 + opts.tcp_data_timeout) == NULL);
    sess = session_manager_get_expired_session(mgr, 2 + opts.tcp_data_timeout + opts.tcp_data_timeout);
    EXPECT_TRUE(sess);
    EXPECT_TRUE(session_get_state(sess) == SESSION_STATE_CLOSED);
    EXPECT_TRUE(session_get_closing_reason(sess) == CLOSING_BY_TIMEOUT);
    session_dump(sess);
    // free session
    session_manager_free_session(mgr, sess);

    // check stat
    session_manager_print_stat(mgr);
    stat = session_manager_get_stat(mgr);
    EXPECT_TRUE(stat);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_used == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_opening == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_active == 0);
    EXPECT_TRUE(stat->tcp_sess.nr_sess_closing == 0);

    session_manager_free(mgr);
}
#endif

int main(int argc, char **argv)
{
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}