libzmq/tests/test_app_meta.cpp

/* SPDX-License-Identifier: MPL-2.0 */

#include "testutil.hpp"
#include "testutil_unity.hpp"
#include <unity.h>

#include <string.h>

void setUp ()
{
}
void tearDown ()
{
}

void test_app_meta_reqrep ()
{
    void *ctx;
    zmq_msg_t msg;
    void *rep_sock, *req_sock;
    char connect_address[MAX_SOCKET_STRING];
    const char *req_hello = "X-hello:hello";
    const char *req_connection = "X-connection:primary";
    const char *req_z85 = "X-bin:009c6";
    const char *rep_hello = "X-hello:world";
    const char *rep_connection = "X-connection:backup";
    const char *bad_strings[] = {
      ":",
      "key:",
      ":value",
      "keyvalue",
      "",
      "X-"
      "KeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKe"
      "yTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyT"
      "ooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyTooLongKeyToo"
      "LongKeyTooLongKeyTooLongKeyTooLongKeyTooLong:value"};

    ctx = zmq_ctx_new ();
    rep_sock = zmq_socket (ctx, ZMQ_REP);
    TEST_ASSERT_NOT_NULL (rep_sock);
    req_sock = zmq_socket (ctx, ZMQ_REQ);
    TEST_ASSERT_NOT_NULL (req_sock);

    int rc =
      zmq_setsockopt (rep_sock, ZMQ_METADATA, rep_hello, strlen (rep_hello));
    TEST_ASSERT_EQUAL_INT (0, rc);

    int l = 0;
    rc = zmq_setsockopt (rep_sock, ZMQ_LINGER, &l, sizeof (l));
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_setsockopt (rep_sock, ZMQ_METADATA, rep_connection,
                         strlen (rep_connection));
    TEST_ASSERT_EQUAL_INT (0, rc);

    for (int i = 0; i < 6; i++) {
        rc = zmq_setsockopt (rep_sock, ZMQ_METADATA, bad_strings[i],
                             strlen (bad_strings[i]));
        TEST_ASSERT_EQUAL_INT (-1, rc);
    }

    bind_loopback_ipv4 (rep_sock, connect_address, sizeof connect_address);

    l = 0;
    rc = zmq_setsockopt (req_sock, ZMQ_LINGER, &l, sizeof (l));
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_setsockopt (req_sock, ZMQ_METADATA, req_hello, strlen (req_hello));
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_setsockopt (req_sock, ZMQ_METADATA, req_connection,
                         strlen (req_connection));
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_setsockopt (req_sock, ZMQ_METADATA, req_z85, strlen (req_z85));
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_connect (req_sock, connect_address);
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_msg_init_size (&msg, 1);
    TEST_ASSERT_EQUAL_INT (0, rc);

    char *data = static_cast<char *> (zmq_msg_data (&msg));
    data[0] = 1;

    rc = zmq_msg_send (&msg, req_sock, 0);
    TEST_ASSERT_EQUAL_INT (1, rc);

    rc = zmq_msg_init (&msg);
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_msg_recv (&msg, rep_sock, 0);
    TEST_ASSERT_EQUAL_INT (1, rc);

    TEST_ASSERT_EQUAL_STRING ("hello", zmq_msg_gets (&msg, "X-hello"));
    TEST_ASSERT_EQUAL_STRING ("primary", zmq_msg_gets (&msg, "X-connection"));
    const char *const bindata = zmq_msg_gets (&msg, "X-bin");
    TEST_ASSERT_NOT_NULL (bindata);
    uint8_t rawdata[4];
    const uint8_t *const ret = zmq_z85_decode (rawdata, bindata);
    TEST_ASSERT_NOT_NULL (ret);
    TEST_ASSERT_EQUAL_UINT8 (0, rawdata[0]);
    TEST_ASSERT_EQUAL_UINT8 (1, rawdata[1]);
    TEST_ASSERT_EQUAL_UINT8 (2, rawdata[2]);
    TEST_ASSERT_EQUAL_UINT8 (3, rawdata[3]);

    TEST_ASSERT_NULL (zmq_msg_gets (&msg, "X-foobar"));
    TEST_ASSERT_NULL (zmq_msg_gets (&msg, "foobar"));

    rc = zmq_msg_send (&msg, rep_sock, 0);
    TEST_ASSERT_EQUAL_INT (1, rc);

    rc = zmq_msg_recv (&msg, req_sock, 0);
    TEST_ASSERT_EQUAL_INT (1, rc);

    TEST_ASSERT_EQUAL_STRING ("world", zmq_msg_gets (&msg, "X-hello"));
    TEST_ASSERT_EQUAL_STRING ("backup", zmq_msg_gets (&msg, "X-connection"));

    rc = zmq_msg_close (&msg);
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_close (req_sock);
    TEST_ASSERT_EQUAL_INT (0, rc);

    rc = zmq_close (rep_sock);
    TEST_ASSERT_EQUAL_INT (0, rc);

    zmq_ctx_term (ctx);
}


int main ()
{
    setup_test_environment ();

    UNITY_BEGIN ();
    RUN_TEST (test_app_meta_reqrep);

    return UNITY_END ();
}