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WebServiceApi: updated ResolveQueryAsync() to add timeout for recursive resolution. Code refactoring done.

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This commit is contained in:
Shreyas Zare
2024-09-14 19:31:29 +05:30
parent 9f9fee603a
commit 0a88cfcdd9
1 changed files with 10 additions and 10 deletions
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18
DnsServerCore/WebServiceApi.cs
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@@ -28,6 +28,7 @@ using System.Net;
using System.Net.Http;
using System.Net.Sockets;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using TechnitiumLibrary;
using TechnitiumLibrary.Net;
@@ -220,7 +221,10 @@ namespace DnsServerCore
try
{
dnsResponse = await DnsClient.RecursiveResolveAsync(question, dnsCache, proxy, preferIPv6, udpPayloadSize, randomizeName, qnameMinimization, false, dnssecValidation, eDnsClientSubnet, RETRIES, TIMEOUT, rawResponses: rawResponses);
dnsResponse = await TechnitiumLibrary.TaskExtensions.TimeoutAsync(async delegate (CancellationToken cancellationToken1)
{
return await DnsClient.RecursiveResolveAsync(question, dnsCache, proxy, preferIPv6, udpPayloadSize, randomizeName, qnameMinimization, dnssecValidation, eDnsClientSubnet, RETRIES, TIMEOUT, rawResponses: rawResponses, cancellationToken: cancellationToken1);
}, DnsServer.RECURSIVE_RESOLUTION_TIMEOUT);
}
catch (DnsClientResponseDnssecValidationException ex)
{
@@ -295,11 +299,9 @@ namespace DnsServerCore
nameServer = nameServer.ChangeProtocol(protocol);
if (nameServer.IsIPEndPointStale)
{
if (proxy is null)
await nameServer.ResolveIPAddressAsync(_dnsWebService.DnsServer, _dnsWebService.DnsServer.PreferIPv6);
}
else if ((nameServer.DomainEndPoint is null) && ((protocol == DnsTransportProtocol.Udp) || (protocol == DnsTransportProtocol.Tcp)))
if ((nameServer.DomainEndPoint is null) && ((protocol == DnsTransportProtocol.Udp) || (protocol == DnsTransportProtocol.Tcp)))
{
try
{
@@ -373,7 +375,7 @@ namespace DnsServerCore
if (!_dnsWebService._authManager.IsPermitted(PermissionSection.Zones, session.User, PermissionFlag.Modify))
throw new DnsWebServiceException("Access was denied.");
zoneInfo = _dnsWebService.DnsServer.AuthZoneManager.CreatePrimaryZone(domain, _dnsWebService.DnsServer.ServerDomain, false);
zoneInfo = _dnsWebService.DnsServer.AuthZoneManager.CreatePrimaryZone(domain);
if (zoneInfo is null)
throw new DnsServerException("Cannot import records: failed to create primary zone.");
@@ -439,9 +441,7 @@ namespace DnsServerCore
_dnsWebService.DnsServer.AuthZoneManager.ImportRecords(zoneInfo.Name, importRecords, true, true);
}
_dnsWebService._log.Write(context.GetRemoteEndPoint(), "[" + session.User.Username + "] DNS Client imported record(s) for authoritative zone {server: " + server + "; zone: " + zoneInfo.Name + "; type: " + type + ";}");
_dnsWebService.DnsServer.AuthZoneManager.SaveZoneFile(zoneInfo.Name);
_dnsWebService._log.Write(context.GetRemoteEndPoint(), "[" + session.User.Username + "] DNS Client imported record(s) for authoritative zone {server: " + server + "; zone: " + zoneInfo.DisplayName + "; type: " + type + ";}");
}
Utf8JsonWriter jsonWriter = context.GetCurrentJsonWriter();