400 lines
12 KiB
C
400 lines
12 KiB
C
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curlcheck.h"
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_IN6_H
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#include <netinet/in6.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef __VMS
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#include <in.h>
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#include <inet.h>
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#endif
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#include <setjmp.h>
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#include <signal.h>
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#include "urldata.h"
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#include "connect.h"
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#include "cfilters.h"
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#include "multiif.h"
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#include "curl_trc.h"
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static CURL *easy;
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static CURLcode unit_setup(void)
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{
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CURLcode res = CURLE_OK;
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global_init(CURL_GLOBAL_ALL);
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easy = curl_easy_init();
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if(!easy) {
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curl_global_cleanup();
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return CURLE_OUT_OF_MEMORY;
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}
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curl_easy_setopt(easy, CURLOPT_VERBOSE, 1L);
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return res;
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}
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static void unit_stop(void)
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{
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curl_easy_cleanup(easy);
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curl_global_cleanup();
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}
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#ifdef DEBUGBUILD
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struct test_case {
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int id;
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const char *url;
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const char *resolve_info;
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unsigned char ip_version;
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timediff_t connect_timeout_ms;
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timediff_t he_timeout_ms;
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timediff_t cf4_fail_delay_ms;
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timediff_t cf6_fail_delay_ms;
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int exp_cf4_creations;
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int exp_cf6_creations;
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timediff_t min_duration_ms;
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timediff_t max_duration_ms;
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CURLcode exp_result;
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const char *pref_family;
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};
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struct ai_family_stats {
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const char *family;
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int creations;
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timediff_t first_created;
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timediff_t last_created;
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};
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struct test_result {
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CURLcode result;
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struct curltime started;
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struct curltime ended;
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struct ai_family_stats cf4;
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struct ai_family_stats cf6;
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};
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static struct test_case *current_tc;
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static struct test_result *current_tr;
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struct cf_test_ctx {
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int ai_family;
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int transport;
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char id[16];
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struct curltime started;
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timediff_t fail_delay_ms;
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struct ai_family_stats *stats;
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};
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static void cf_test_destroy(struct Curl_cfilter *cf, struct Curl_easy *data)
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{
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struct cf_test_ctx *ctx = cf->ctx;
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#ifndef CURL_DISABLE_VERBOSE_STRINGS
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infof(data, "%04dms: cf[%s] destroyed",
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(int)Curl_timediff(Curl_now(), current_tr->started), ctx->id);
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#else
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(void)data;
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#endif
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free(ctx);
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cf->ctx = NULL;
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}
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static CURLcode cf_test_connect(struct Curl_cfilter *cf,
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struct Curl_easy *data,
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bool blocking, bool *done)
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{
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struct cf_test_ctx *ctx = cf->ctx;
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timediff_t duration_ms;
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(void)data;
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(void)blocking;
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*done = FALSE;
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duration_ms = Curl_timediff(Curl_now(), ctx->started);
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if(duration_ms >= ctx->fail_delay_ms) {
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infof(data, "%04dms: cf[%s] fail delay reached",
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(int)duration_ms, ctx->id);
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return CURLE_COULDNT_CONNECT;
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}
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if(duration_ms)
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infof(data, "%04dms: cf[%s] continuing", (int)duration_ms, ctx->id);
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Curl_expire(data, ctx->fail_delay_ms - duration_ms, EXPIRE_RUN_NOW);
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return CURLE_OK;
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}
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static struct Curl_cftype cft_test = {
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"TEST",
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CF_TYPE_IP_CONNECT,
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CURL_LOG_LVL_NONE,
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cf_test_destroy,
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cf_test_connect,
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Curl_cf_def_close,
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Curl_cf_def_get_host,
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Curl_cf_def_adjust_pollset,
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Curl_cf_def_data_pending,
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Curl_cf_def_send,
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Curl_cf_def_recv,
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Curl_cf_def_cntrl,
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Curl_cf_def_conn_is_alive,
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Curl_cf_def_conn_keep_alive,
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Curl_cf_def_query,
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};
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static CURLcode cf_test_create(struct Curl_cfilter **pcf,
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struct Curl_easy *data,
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struct connectdata *conn,
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const struct Curl_addrinfo *ai,
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int transport)
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{
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struct cf_test_ctx *ctx = NULL;
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struct Curl_cfilter *cf = NULL;
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timediff_t created_at;
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CURLcode result;
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(void)data;
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(void)conn;
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ctx = calloc(1, sizeof(*ctx));
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if(!ctx) {
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result = CURLE_OUT_OF_MEMORY;
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goto out;
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}
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ctx->ai_family = ai->ai_family;
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ctx->transport = transport;
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ctx->started = Curl_now();
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#ifdef ENABLE_IPV6
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if(ctx->ai_family == AF_INET6) {
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ctx->stats = ¤t_tr->cf6;
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ctx->fail_delay_ms = current_tc->cf6_fail_delay_ms;
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curl_msprintf(ctx->id, "v6-%d", ctx->stats->creations);
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ctx->stats->creations++;
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}
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else
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#endif
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{
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ctx->stats = ¤t_tr->cf4;
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ctx->fail_delay_ms = current_tc->cf4_fail_delay_ms;
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curl_msprintf(ctx->id, "v4-%d", ctx->stats->creations);
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ctx->stats->creations++;
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}
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created_at = Curl_timediff(ctx->started, current_tr->started);
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if(ctx->stats->creations == 1)
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ctx->stats->first_created = created_at;
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ctx->stats->last_created = created_at;
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infof(data, "%04dms: cf[%s] created", (int)created_at, ctx->id);
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result = Curl_cf_create(&cf, &cft_test, ctx);
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if(result)
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goto out;
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Curl_expire(data, ctx->fail_delay_ms, EXPIRE_RUN_NOW);
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out:
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*pcf = (!result)? cf : NULL;
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if(result) {
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free(cf);
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free(ctx);
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}
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return result;
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}
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static void check_result(struct test_case *tc,
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struct test_result *tr)
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{
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char msg[256];
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timediff_t duration_ms;
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duration_ms = Curl_timediff(tr->ended, tr->started);
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fprintf(stderr, "%d: test case took %dms\n", tc->id, (int)duration_ms);
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if(tr->result != tc->exp_result
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&& CURLE_OPERATION_TIMEDOUT != tr->result) {
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/* on CI we encounter the TIMEOUT result, since images get less CPU
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* and events are not as sharply timed. */
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curl_msprintf(msg, "%d: expected result %d but got %d",
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tc->id, tc->exp_result, tr->result);
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fail(msg);
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}
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if(tr->cf4.creations != tc->exp_cf4_creations) {
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curl_msprintf(msg, "%d: expected %d ipv4 creations, but got %d",
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tc->id, tc->exp_cf4_creations, tr->cf4.creations);
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fail(msg);
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}
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if(tr->cf6.creations != tc->exp_cf6_creations) {
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curl_msprintf(msg, "%d: expected %d ipv6 creations, but got %d",
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tc->id, tc->exp_cf6_creations, tr->cf6.creations);
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fail(msg);
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}
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duration_ms = Curl_timediff(tr->ended, tr->started);
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if(duration_ms < tc->min_duration_ms) {
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curl_msprintf(msg, "%d: expected min duration of %dms, but took %dms",
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tc->id, (int)tc->min_duration_ms, (int)duration_ms);
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fail(msg);
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}
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if(duration_ms > tc->max_duration_ms) {
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curl_msprintf(msg, "%d: expected max duration of %dms, but took %dms",
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tc->id, (int)tc->max_duration_ms, (int)duration_ms);
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fail(msg);
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}
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if(tr->cf6.creations && tr->cf4.creations && tc->pref_family) {
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/* did ipv4 and ipv6 both, expect the preferred family to start right arway
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* with the other being delayed by the happy_eyeball_timeout */
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struct ai_family_stats *stats1 = !strcmp(tc->pref_family, "v6")?
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&tr->cf6 : &tr->cf4;
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struct ai_family_stats *stats2 = !strcmp(tc->pref_family, "v6")?
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&tr->cf4 : &tr->cf6;
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if(stats1->first_created > 100) {
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curl_msprintf(msg, "%d: expected ip%s to start right away, instead "
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"first attempt made after %dms",
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tc->id, stats1->family, (int)stats1->first_created);
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fail(msg);
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}
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if(stats2->first_created < tc->he_timeout_ms) {
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curl_msprintf(msg, "%d: expected ip%s to start delayed after %dms, "
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"instead first attempt made after %dms",
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tc->id, stats2->family, (int)tc->he_timeout_ms,
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(int)stats2->first_created);
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fail(msg);
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}
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}
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}
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static void test_connect(struct test_case *tc)
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{
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struct test_result tr;
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struct curl_slist *list = NULL;
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Curl_debug_set_transport_provider(TRNSPRT_TCP, cf_test_create);
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current_tc = tc;
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current_tr = &tr;
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list = curl_slist_append(NULL, tc->resolve_info);
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fail_unless(list, "error allocating resolve list entry");
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curl_easy_setopt(easy, CURLOPT_RESOLVE, list);
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curl_easy_setopt(easy, CURLOPT_IPRESOLVE, (long)tc->ip_version);
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curl_easy_setopt(easy, CURLOPT_CONNECTTIMEOUT_MS,
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(long)tc->connect_timeout_ms);
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curl_easy_setopt(easy, CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS,
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(long)tc->he_timeout_ms);
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curl_easy_setopt(easy, CURLOPT_URL, tc->url);
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memset(&tr, 0, sizeof(tr));
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tr.cf6.family = "v6";
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tr.cf4.family = "v4";
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tr.started = Curl_now();
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tr.result = curl_easy_perform(easy);
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tr.ended = Curl_now();
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curl_easy_setopt(easy, CURLOPT_RESOLVE, NULL);
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curl_slist_free_all(list);
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list = NULL;
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current_tc = NULL;
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current_tr = NULL;
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check_result(tc, &tr);
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}
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#endif /* DEBUGBUILD */
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/*
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* How these test cases work:
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* - replace the creation of the TCP socket filter with our test filter
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* - test filter does nothing and reports failure after configured delay
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* - we feed addresses into the resolve cache to simulate different cases
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* - we monitor how many instances of ipv4/v6 attempts are made and when
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* - for mixed families, we expect HAPPY_EYEBALLS_TIMEOUT to trigger
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*
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* Max Duration checks needs to be conservative since CI jobs are not
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* as sharp.
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*/
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#define TURL "http://test.com:123"
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#define R_FAIL CURLE_COULDNT_CONNECT
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/* timeout values accounting for low cpu resources in CI */
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#define TC_TMOT 90000 /* 90 sec max test duration */
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#define CNCT_TMOT 60000 /* 60sec connect timeout */
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static struct test_case TEST_CASES[] = {
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/* TIMEOUT_MS, FAIL_MS CREATED DURATION Result, HE_PREF */
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/* CNCT HE v4 v6 v4 v6 MIN MAX */
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{ 1, TURL, "test.com:123:192.0.2.1", CURL_IPRESOLVE_WHATEVER,
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CNCT_TMOT, 150, 200, 200, 1, 0, 200, TC_TMOT, R_FAIL, NULL },
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/* 1 ipv4, fails after ~200ms, reports COULDNT_CONNECT */
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{ 2, TURL, "test.com:123:192.0.2.1,192.0.2.2", CURL_IPRESOLVE_WHATEVER,
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CNCT_TMOT, 150, 200, 200, 2, 0, 400, TC_TMOT, R_FAIL, NULL },
|
||
|
|
/* 2 ipv4, fails after ~400ms, reports COULDNT_CONNECT */
|
||
|
|
#ifdef ENABLE_IPV6
|
||
|
|
{ 3, TURL, "test.com:123:::1", CURL_IPRESOLVE_WHATEVER,
|
||
|
|
CNCT_TMOT, 150, 200, 200, 0, 1, 200, TC_TMOT, R_FAIL, NULL },
|
||
|
|
/* 1 ipv6, fails after ~200ms, reports COULDNT_CONNECT */
|
||
|
|
{ 4, TURL, "test.com:123:::1,::2", CURL_IPRESOLVE_WHATEVER,
|
||
|
|
CNCT_TMOT, 150, 200, 200, 0, 2, 400, TC_TMOT, R_FAIL, NULL },
|
||
|
|
/* 2 ipv6, fails after ~400ms, reports COULDNT_CONNECT */
|
||
|
|
|
||
|
|
{ 5, TURL, "test.com:123:192.0.2.1,::1", CURL_IPRESOLVE_WHATEVER,
|
||
|
|
CNCT_TMOT, 150, 200, 200, 1, 1, 350, TC_TMOT, R_FAIL, "v4" },
|
||
|
|
/* mixed ip4+6, v4 starts, v6 kicks in on HE, fails after ~350ms */
|
||
|
|
{ 6, TURL, "test.com:123:::1,192.0.2.1", CURL_IPRESOLVE_WHATEVER,
|
||
|
|
CNCT_TMOT, 150, 200, 200, 1, 1, 350, TC_TMOT, R_FAIL, "v6" },
|
||
|
|
/* mixed ip6+4, v6 starts, v4 never starts due to high HE, TIMEOUT */
|
||
|
|
{ 7, TURL, "test.com:123:192.0.2.1,::1", CURL_IPRESOLVE_V4,
|
||
|
|
CNCT_TMOT, 150, 500, 500, 1, 0, 400, TC_TMOT, R_FAIL, NULL },
|
||
|
|
/* mixed ip4+6, but only use v4, check it uses full connect timeout,
|
||
|
|
although another address of the 'wrong' family is available */
|
||
|
|
{ 8, TURL, "test.com:123:::1,192.0.2.1", CURL_IPRESOLVE_V6,
|
||
|
|
CNCT_TMOT, 150, 500, 500, 0, 1, 400, TC_TMOT, R_FAIL, NULL },
|
||
|
|
/* mixed ip4+6, but only use v6, check it uses full connect timeout,
|
||
|
|
although another address of the 'wrong' family is available */
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
UNITTEST_START
|
||
|
|
|
||
|
|
#if defined(DEBUGBUILD)
|
||
|
|
size_t i;
|
||
|
|
|
||
|
|
for(i = 0; i < sizeof(TEST_CASES)/sizeof(TEST_CASES[0]); ++i) {
|
||
|
|
test_connect(&TEST_CASES[i]);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
(void)TEST_CASES;
|
||
|
|
(void)test_connect;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
UNITTEST_STOP
|