266 lines
12 KiB
Objective-C
266 lines
12 KiB
Objective-C
//
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// ResolvingEffectiveHostTest.m
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// AlicloudHttpDNSTests
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//
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// Created by xuyecan on 2024/5/28.
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// Copyright © 2024 alibaba-inc.com. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <stdatomic.h>
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#import <mach/mach.h>
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#import "HttpdnsService.h"
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#import "HttpdnsRemoteResolver.h"
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#import "TestBase.h"
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@interface ResolvingEffectiveHostTest : TestBase<HttpdnsTTLDelegate>
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@end
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@implementation ResolvingEffectiveHostTest
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+ (void)setUp {
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[super setUp];
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}
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- (void)setUp {
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[super setUp];
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self.httpdns = [[HttpDnsService alloc] initWithAccountID:100000];
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[self.httpdns setLogEnabled:YES];
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[self.httpdns setReuseExpiredIPEnabled:NO];
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[self.httpdns setTtlDelegate:self];
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[self.httpdns setLogHandler:self];
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self.currentTimeStamp = [[NSDate date] timeIntervalSince1970];
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}
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- (void)tearDown {
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[super tearDown];
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}
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- (int64_t)httpdnsHost:(NSString *)host ipType:(AlicloudHttpDNS_IPType)ipType ttl:(int64_t)ttl {
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// 为了在并发测试中域名快速过期，将ttl设置为随机1-4秒
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return arc4random_uniform(4) + 1;
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}
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- (void)testNormalMultipleHostsResolve {
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dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
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// 使用正常解析到的ttl
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[self.httpdns setTtlDelegate:nil];
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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[hostNameIpPrefixMap enumerateKeysAndObjectsUsingBlock:^(NSString * _Nonnull host, NSString * _Nonnull ipPrefix, BOOL * _Nonnull stop) {
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HttpdnsResult *result = [self.httpdns resolveHostSync:host byIpType:HttpdnsQueryIPTypeIpv4];
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XCTAssertNotNil(result);
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XCTAssertTrue([result.host isEqualToString:host]);
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XCTAssertGreaterThan(result.ttl, 0);
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// 同步接口，不复用过期ip的情况下，解析出的ip一定是未过期的
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XCTAssertLessThan([[NSDate date] timeIntervalSince1970], result.lastUpdatedTimeInterval + result.ttl);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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}];
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dispatch_semaphore_signal(semaphore);
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});
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dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
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}
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- (void)testNonblockingMethodShouldNotBlockDuringMultithreadLongRun {
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NSTimeInterval startTime = [[NSDate date] timeIntervalSince1970];
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NSTimeInterval testDuration = 10;
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int threadCountForEachType = 5;
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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long long executeStartTimeInMs = [[NSDate date] timeIntervalSince1970] * 1000;
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HttpdnsResult *result = [self.httpdns resolveHostSyncNonBlocking:host byIpType:HttpdnsQueryIPTypeIpv4];
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long long executeEndTimeInMs = [[NSDate date] timeIntervalSince1970] * 1000;
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// 非阻塞接口任何情况下不应该阻塞超过30ms
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if (executeEndTimeInMs - executeStartTimeInMs >= 30) {
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printf("XCTAssertWillFailed, host: %s, executeTime: %lldms\n", [host UTF8String], executeEndTimeInMs - executeStartTimeInMs);
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}
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XCTAssertLessThan(executeEndTimeInMs - executeStartTimeInMs, 30);
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if (result) {
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XCTAssertNotNil(result);
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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}
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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[NSThread sleepForTimeInterval:testDuration + 1];
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}
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- (void)testMultithreadAndMultiHostResolvingForALongRun {
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NSTimeInterval startTime = [[NSDate date] timeIntervalSince1970];
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NSTimeInterval testDuration = 10;
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int threadCountForEachType = 4;
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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HttpdnsResult *result = [self.httpdns resolveHostSync:host byIpType:HttpdnsQueryIPTypeIpv4];
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XCTAssertNotNil(result);
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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[self.httpdns resolveHostAsync:host byIpType:HttpdnsQueryIPTypeIpv4 completionHandler:^(HttpdnsResult *result) {
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XCTAssertNotNil(result);
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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}];
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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HttpdnsResult *result = [self.httpdns resolveHostSyncNonBlocking:host byIpType:HttpdnsQueryIPTypeIpv4];
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if (result) {
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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}
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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sleep(testDuration + 1);
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}
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// 指定查询both，但域名都只配置了ipv4
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// 这种情况下，会自动打标该域名无ipv6，后续的结果只会包含ipv4地址
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- (void)testMultithreadAndMultiHostResolvingForALongRunBySpecifyBothIpv4AndIpv6 {
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NSTimeInterval startTime = [[NSDate date] timeIntervalSince1970];
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NSTimeInterval testDuration = 10;
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int threadCountForEachType = 4;
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// 计数时有并发冲突的可能，但只是测试，不用过于严谨
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__block int syncCount = 0, asyncCount = 0, syncNonBlockingCount = 0;
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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HttpdnsResult *result = [self.httpdns resolveHostSync:host byIpType:HttpdnsQueryIPTypeBoth];
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XCTAssertNotNil(result);
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XCTAssertTrue(!result.hasIpv6Address);
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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syncCount++;
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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[self.httpdns resolveHostAsync:host byIpType:HttpdnsQueryIPTypeBoth completionHandler:^(HttpdnsResult *result) {
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XCTAssertNotNil(result);
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XCTAssertTrue(!result.hasIpv6Address);
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XCTAssertTrue([result.host isEqualToString:host]);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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asyncCount++;
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}];
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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for (int i = 0; i < threadCountForEachType; i++) {
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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while ([[NSDate date] timeIntervalSince1970] - startTime < testDuration) {
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NSString *host = [hostNameIpPrefixMap allKeys][arc4random_uniform((uint32_t)[hostNameIpPrefixMap count])];
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NSString *ipPrefix = hostNameIpPrefixMap[host];
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HttpdnsResult *result = [self.httpdns resolveHostSyncNonBlocking:host byIpType:HttpdnsQueryIPTypeBoth];
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if (result) {
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XCTAssertTrue([result.host isEqualToString:host]);
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XCTAssertTrue(!result.hasIpv6Address);
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NSString *firstIp = [result firstIpv4Address];
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if (![firstIp hasPrefix:ipPrefix]) {
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printf("XCTAssertWillFailed, host: %s, firstIp: %s, ipPrefix: %s\n", [host UTF8String], [firstIp UTF8String], [ipPrefix UTF8String]);
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}
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XCTAssertTrue([firstIp hasPrefix:ipPrefix]);
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}
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syncNonBlockingCount++;
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[NSThread sleepForTimeInterval:0.1];
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}
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});
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}
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sleep(testDuration + 1);
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int theoreticalCount = threadCountForEachType * (testDuration / 0.1);
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// printf all the counts
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printf("syncCount: %d, asyncCount: %d, syncNonBlockingCount: %d, theoreticalCount: %d\n", syncCount, asyncCount, syncNonBlockingCount, theoreticalCount);
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}
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@end
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