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AAAA记录解析

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This commit is contained in:
老九 2021-11-17 23:26:08 +08:00
parent 3212d556ba
commit 21bf7932de
2 changed files with 10 additions and 17 deletions
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24
FastGithub.DomainResolve/DnsClient.cs
View File

@ -91,12 +91,7 @@ namespace FastGithub.DomainResolve
foreach (var fallbackDns in this.fastGithubConfig.FallbackDns)
{
if (Socket.OSSupportsIPv4 && fallbackDns.AddressFamily == AddressFamily.InterNetwork)
{
yield return fallbackDns;
}
if (Socket.OSSupportsIPv6 && fallbackDns.AddressFamily == AddressFamily.InterNetworkV6)
if (Socket.OSSupportsIPv6 || fallbackDns.AddressFamily != AddressFamily.InterNetworkV6)
{
yield return fallbackDns;
}
@ -161,9 +156,8 @@ namespace FastGithub.DomainResolve
? (IRequestResolver)new TcpRequestResolver(dns)
: new UdpRequestResolver(dns, new TcpRequestResolver(dns), this.resolveTimeout);
var answerRecords = await GetAnswerRecordsAsync(resolver, endPoint.Host, cancellationToken);
var addresses = answerRecords
.OfType<IPAddressResourceRecord>()
var addressRecords = await GetAddressRecordsAsync(resolver, endPoint.Host, cancellationToken);
var addresses = addressRecords
.Where(item => IPAddress.IsLoopback(item.IPAddress) == false)
.Select(item => item.IPAddress)
.ToArray();
@ -178,7 +172,7 @@ namespace FastGithub.DomainResolve
addresses = await OrderByConnectAnyAsync(addresses, endPoint.Port, cancellationToken);
}
var timeToLive = answerRecords.First().TimeToLive;
var timeToLive = addressRecords.First().TimeToLive;
if (timeToLive <= TimeSpan.Zero)
{
timeToLive = this.defaultEmptyTtl;
@ -188,25 +182,25 @@ namespace FastGithub.DomainResolve
}
/// <summary>
/// 获取答案
/// 获取IP记录
/// </summary>
/// <param name="resolver"></param>
/// <param name="domain"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
private static async Task<IList<IResourceRecord>> GetAnswerRecordsAsync(IRequestResolver resolver, string domain, CancellationToken cancellationToken)
private static async Task<IList<IPAddressResourceRecord>> GetAddressRecordsAsync(IRequestResolver resolver, string domain, CancellationToken cancellationToken)
{
var answerRecords = new List<IResourceRecord>();
var answerRecords = new List<IPAddressResourceRecord>();
if (Socket.OSSupportsIPv4 == true)
{
var records = await GetAnswerAsync(RecordType.A);
answerRecords.AddRange(records);
answerRecords.AddRange(records.OfType<IPAddressResourceRecord>());
}
if (Socket.OSSupportsIPv6 == true)
{
var records = await GetAnswerAsync(RecordType.AAAA);
answerRecords.AddRange(records);
answerRecords.AddRange(records.OfType<IPAddressResourceRecord>());
}
return answerRecords;

3
FastGithub/appsettings.json
View File

@ -4,8 +4,7 @@
"HttpProxyPort": 38457, // http代理端口，linux/osx平台使用
"FallbackDns": [ // 以下dns必须要支持tcp
"114.114.114.114:53",
"119.29.29.29:53",
"[2400:3200::1]:53"
"119.29.29.29:53"
],
"DomainConfigs": {
"*.fastgithub.com": { // 域名的*表示除.之外0到多个任意字符