//
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// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
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//
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// This software is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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//
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#include <nuts.h>
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static void
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test_xresp_identity(void)
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{
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nng_socket s;
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int p1, p2;
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char * n1;
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char * n2;
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NUTS_PASS(nng_respondent0_open_raw(&s));
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NUTS_PASS(nng_socket_get_int(s, NNG_OPT_PROTO, &p1));
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NUTS_PASS(nng_socket_get_int(s, NNG_OPT_PEER, &p2));
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NUTS_PASS(nng_socket_get_string(s, NNG_OPT_PROTONAME, &n1));
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NUTS_PASS(nng_socket_get_string(s, NNG_OPT_PEERNAME, &n2));
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NUTS_CLOSE(s);
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NUTS_TRUE(p1 == NNG_RESPONDENT0_SELF);
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NUTS_TRUE(p2 == NNG_RESPONDENT0_PEER);
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NUTS_MATCH(n1, NNG_RESPONDENT0_SELF_NAME);
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NUTS_MATCH(n2, NNG_RESPONDENT0_PEER_NAME);
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nng_strfree(n1);
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nng_strfree(n2);
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}
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static void
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test_xresp_raw(void)
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{
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nng_socket s;
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bool b;
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NUTS_PASS(nng_respondent0_open_raw(&s));
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NUTS_PASS(nng_socket_get_bool(s, NNG_OPT_RAW, &b));
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NUTS_TRUE(b);
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NUTS_CLOSE(s);
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}
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static void
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test_xresp_no_context(void)
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{
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nng_socket s;
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nng_ctx ctx;
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NUTS_PASS(nng_respondent0_open_raw(&s));
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NUTS_FAIL(nng_ctx_open(&ctx, s), NNG_ENOTSUP);
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NUTS_CLOSE(s);
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}
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static void
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test_xresp_poll_writeable(void)
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{
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int fd;
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nng_socket surv;
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nng_socket resp;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open(&surv));
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NUTS_PASS(nng_socket_get_int(resp, NNG_OPT_SENDFD, &fd));
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NUTS_TRUE(fd >= 0);
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// We are always writeable, even before connect. This is so that
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// back-pressure from a bad peer can't trash others. We assume
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// that peers won't send us requests faster than they can consume
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// the answers. If they do, they will lose their answers.
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NUTS_TRUE(nuts_poll_fd(fd) == true);
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NUTS_MARRY(surv, resp);
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// Now it's writable.
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NUTS_TRUE(nuts_poll_fd(fd) == true);
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_poll_readable(void)
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{
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int fd;
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nng_socket surv;
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nng_socket resp;
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nng_msg * msg;
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NUTS_PASS(nng_surveyor0_open(&surv));
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_socket_get_int(resp, NNG_OPT_RECVFD, &fd));
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NUTS_TRUE(fd >= 0);
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// Not readable if not connected!
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NUTS_TRUE(nuts_poll_fd(fd) == false);
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// Even after connect (no message yet)
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NUTS_MARRY(surv, resp);
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NUTS_TRUE(nuts_poll_fd(fd) == false);
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// But once we send messages, it is.
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// We have to send a request, in order to send a reply.
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NUTS_SEND(surv, "abc");
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NUTS_SLEEP(100);
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NUTS_TRUE(nuts_poll_fd(fd) == true);
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// and receiving makes it no longer ready
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NUTS_PASS(nng_recvmsg(resp, &msg, 0));
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nng_msg_free(msg);
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NUTS_TRUE(nuts_poll_fd(fd) == false);
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_validate_peer(void)
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{
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nng_socket s1, s2;
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nng_stat * stats;
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nng_stat * reject;
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char * addr;
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NUTS_ADDR(addr, "inproc");
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NUTS_PASS(nng_respondent0_open_raw(&s1));
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NUTS_PASS(nng_respondent0_open(&s2));
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NUTS_PASS(nng_listen(s1, addr, NULL, 0));
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NUTS_PASS(nng_dial(s2, addr, NULL, NNG_FLAG_NONBLOCK));
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NUTS_SLEEP(100);
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NUTS_PASS(nng_stats_get(&stats));
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NUTS_TRUE(stats != NULL);
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NUTS_TRUE((reject = nng_stat_find_socket(stats, s1)) != NULL);
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NUTS_TRUE((reject = nng_stat_find(reject, "reject")) != NULL);
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NUTS_TRUE(nng_stat_type(reject) == NNG_STAT_COUNTER);
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NUTS_TRUE(nng_stat_value(reject) > 0);
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NUTS_CLOSE(s1);
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NUTS_CLOSE(s2);
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nng_stats_free(stats);
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}
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static void
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test_xresp_close_pipe_before_send(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_pipe p;
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nng_aio * aio1;
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nng_msg * m;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open(&surv));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_RECVTIMEO, 1000));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_SENDTIMEO, 1000));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 1000));
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NUTS_PASS(nng_aio_alloc(&aio1, NULL, NULL));
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NUTS_MARRY(surv, resp);
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NUTS_SEND(surv, "test");
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nng_recv_aio(resp, aio1);
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nng_aio_wait(aio1);
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NUTS_PASS(nng_aio_result(aio1));
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NUTS_TRUE((m = nng_aio_get_msg(aio1)) != NULL);
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p = nng_msg_get_pipe(m);
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NUTS_PASS(nng_pipe_close(p));
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NUTS_PASS(nng_sendmsg(resp, m, 0));
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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nng_aio_free(aio1);
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}
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static void
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test_xresp_close_pipe_during_send(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_pipe p;
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nng_msg * m;
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NUTS_PASS(nng_respondent_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open_raw(&surv));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_RECVTIMEO, 1000));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_SENDTIMEO, 200));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 1000));
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NUTS_PASS(nng_socket_set_int(resp, NNG_OPT_SENDBUF, 20));
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NUTS_PASS(nng_socket_set_int(resp, NNG_OPT_RECVBUF, 20));
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NUTS_PASS(nng_socket_set_int(surv, NNG_OPT_SENDBUF, 20));
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NUTS_PASS(nng_socket_set_int(surv, NNG_OPT_RECVBUF, 1));
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NUTS_MARRY(surv, resp);
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NUTS_PASS(nng_msg_alloc(&m, 4));
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NUTS_PASS(nng_msg_append_u32(m, (unsigned) 0x81000000u));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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NUTS_PASS(nng_recvmsg(resp, &m, 0));
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p = nng_msg_get_pipe(m);
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nng_msg_free(m);
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for (int i = 0; i < 100; i++) {
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NUTS_PASS(nng_msg_alloc(&m, 4));
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NUTS_PASS(nng_msg_header_append_u32(m, nng_pipe_id(p)));
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NUTS_PASS(
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nng_msg_header_append_u32(m, (unsigned) i | 0x80000000u));
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// protocol does not exert back-pressure
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NUTS_PASS(nng_sendmsg(resp, m, 0));
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}
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NUTS_PASS(nng_pipe_close(p));
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_close_during_recv(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_msg * m;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open_raw(&surv));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_RECVTIMEO, 1000));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 100));
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NUTS_PASS(nng_socket_set_int(resp, NNG_OPT_RECVBUF, 5));
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NUTS_PASS(nng_socket_set_int(surv, NNG_OPT_SENDBUF, 20));
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NUTS_MARRY(surv, resp);
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for (unsigned i = 0; i < 100; i++) {
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int rv;
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NUTS_PASS(nng_msg_alloc(&m, 4));
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NUTS_PASS(nng_msg_header_append_u32(m, i | 0x80000000u));
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rv = nng_sendmsg(surv, m, 0);
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if (rv == NNG_ETIMEDOUT) {
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nng_msg_free(m);
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break;
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}
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}
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_recv_aio_stopped(void)
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{
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nng_socket resp;
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nng_aio * aio;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_aio_alloc(&aio, NULL, NULL));
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nng_aio_stop(aio);
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nng_recv_aio(resp, aio);
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nng_aio_wait(aio);
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NUTS_FAIL(nng_aio_result(aio), NNG_ECANCELED);
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NUTS_CLOSE(resp);
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nng_aio_free(aio);
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}
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static void
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test_xresp_send_no_header(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_msg * m;
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NUTS_PASS(nng_surveyor0_open_raw(&surv));
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_RECVTIMEO, 100));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_RECVTIMEO, 100));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_SENDTIMEO, 1000));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 1000));
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NUTS_MARRY(surv, resp);
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NUTS_PASS(nng_msg_alloc(&m, 4));
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NUTS_PASS(nng_sendmsg(resp, m, 0));
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NUTS_FAIL(nng_recvmsg(resp, &m, 0), NNG_ETIMEDOUT);
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_recv_garbage(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_msg * m;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open_raw(&surv));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_RECVTIMEO, 100));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_SENDTIMEO, 100));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 1000));
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NUTS_MARRY(surv, resp);
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NUTS_PASS(nng_msg_alloc(&m, 4));
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NUTS_PASS(nng_msg_append_u32(m, 1u));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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NUTS_FAIL(nng_recvmsg(resp, &m, 0), NNG_ETIMEDOUT);
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_ttl_option(void)
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{
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nng_socket resp;
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int v;
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bool b;
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size_t sz;
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const char *opt = NNG_OPT_MAXTTL;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_socket_set_int(resp, opt, 1));
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NUTS_FAIL(nng_socket_set_int(resp, opt, 0), NNG_EINVAL);
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NUTS_FAIL(nng_socket_set_int(resp, opt, -1), NNG_EINVAL);
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NUTS_FAIL(nng_socket_set_int(resp, opt, 16), NNG_EINVAL);
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NUTS_FAIL(nng_socket_set_int(resp, opt, 256), NNG_EINVAL);
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NUTS_PASS(nng_socket_set_int(resp, opt, 3));
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NUTS_PASS(nng_socket_get_int(resp, opt, &v));
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NUTS_TRUE(v == 3);
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v = 0;
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sz = sizeof(v);
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NUTS_PASS(nng_socket_get(resp, opt, &v, &sz));
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NUTS_TRUE(v == 3);
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NUTS_TRUE(sz == sizeof(v));
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NUTS_FAIL(nng_socket_set(resp, opt, "", 1), NNG_EINVAL);
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sz = 1;
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NUTS_FAIL(nng_socket_get(resp, opt, &v, &sz), NNG_EINVAL);
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NUTS_FAIL(nng_socket_set_bool(resp, opt, true), NNG_EBADTYPE);
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NUTS_FAIL(nng_socket_get_bool(resp, opt, &b), NNG_EBADTYPE);
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NUTS_CLOSE(resp);
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}
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static void
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test_xresp_ttl_drop(void)
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{
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nng_socket resp;
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nng_socket surv;
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nng_msg * m;
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NUTS_PASS(nng_respondent0_open_raw(&resp));
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NUTS_PASS(nng_surveyor0_open_raw(&surv));
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NUTS_PASS(nng_socket_set_int(resp, NNG_OPT_MAXTTL, 3));
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NUTS_PASS(nng_socket_set_ms(resp, NNG_OPT_RECVTIMEO, 200));
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NUTS_PASS(nng_socket_set_ms(surv, NNG_OPT_SENDTIMEO, 1000));
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NUTS_MARRY(surv, resp);
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// Send messages. Note that xresp implicitly adds a hop on receive.
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NUTS_PASS(nng_msg_alloc(&m, 0));
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NUTS_PASS(nng_msg_append_u32(m, 1u)); // 2 hops
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NUTS_PASS(nng_msg_append_u32(m, 0x80000001u));
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NUTS_PASS(nng_msg_append(m, "PASS1", 6));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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NUTS_PASS(nng_msg_alloc(&m, 0));
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NUTS_PASS(nng_msg_append_u32(m, 1u)); // 4 hops -- discard!
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NUTS_PASS(nng_msg_append_u32(m, 2u));
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NUTS_PASS(nng_msg_append_u32(m, 3u));
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NUTS_PASS(nng_msg_append_u32(m, 0x80000002u));
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NUTS_PASS(nng_msg_append(m, "FAIL2", 6));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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NUTS_PASS(nng_msg_alloc(&m, 0));
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NUTS_PASS(nng_msg_append_u32(m, 1u)); // 3 hops - passes
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NUTS_PASS(nng_msg_append_u32(m, 2u));
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NUTS_PASS(nng_msg_append_u32(m, 0x80000003u));
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NUTS_PASS(nng_msg_append(m, "PASS3", 6));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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NUTS_PASS(nng_msg_alloc(&m, 0));
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NUTS_PASS(nng_msg_append_u32(m, 1u)); // 4 hops -- discard!
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NUTS_PASS(nng_msg_append_u32(m, 2u));
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NUTS_PASS(nng_msg_append_u32(m, 3u));
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NUTS_PASS(nng_msg_append_u32(m, 0x80000003u));
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NUTS_PASS(nng_msg_append(m, "FAIL4", 6));
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NUTS_PASS(nng_sendmsg(surv, m, 0));
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// So on receive we should see 80000001 and 80000003.
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NUTS_PASS(nng_recvmsg(resp, &m, 0));
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NUTS_TRUE(nng_msg_header_len(m) == 12);
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NUTS_TRUE(nng_msg_len(m) == 6);
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NUTS_MATCH(nng_msg_body(m), "PASS1");
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nng_msg_free(m);
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NUTS_PASS(nng_recvmsg(resp, &m, 0));
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NUTS_TRUE(nng_msg_header_len(m) == 16); // 3 hops + ID
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NUTS_TRUE(nng_msg_len(m) == 6);
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NUTS_MATCH(nng_msg_body(m), "PASS3");
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nng_msg_free(m);
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NUTS_FAIL(nng_recvmsg(resp, &m, 0), NNG_ETIMEDOUT);
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NUTS_CLOSE(surv);
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NUTS_CLOSE(resp);
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}
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NUTS_TESTS = {
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{ "xrespond identity", test_xresp_identity },
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{ "xrespond raw", test_xresp_raw },
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{ "xrespond no context", test_xresp_no_context },
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{ "xrespond poll readable", test_xresp_poll_readable },
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{ "xrespond poll writable", test_xresp_poll_writeable },
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{ "xrespond validate peer", test_xresp_validate_peer },
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{ "xrespond close pipe before send",
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test_xresp_close_pipe_before_send },
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{ "xrespond close pipe during send",
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test_xresp_close_pipe_during_send },
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{ "xrespond close during recv", test_xresp_close_during_recv },
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{ "xrespond recv aio stopped", test_xresp_recv_aio_stopped },
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{ "xrespond send no header", test_xresp_send_no_header },
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{ "xrespond recv garbage", test_xresp_recv_garbage },
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{ "xrespond ttl option", test_xresp_ttl_option },
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{ "xrespond ttl drop", test_xresp_ttl_drop },
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{ NULL, NULL },
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};
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