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Resolve IP addresses in ConnectCallback example #10931

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Merged
merged 2 commits into from
Feb 10, 2025
Merged

Resolve IP addresses in ConnectCallback example #10931

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0d1dc88
Resolve IP addresses in ConnectCallback example
antonfirsov Feb 8, 2025
56ad45b
delete unnecessary usings
antonfirsov Feb 8, 2025
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8 changes: 5 additions & 3 deletions snippets/csharp/System.Net.Http/SocketsHttpHandler/ConnectCallback/program.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
using System;
using System.IO;
using System;
using System.Net;
using System.Net.Http;
using System.Net.Sockets;
Expand All @@ -14,14 +13,17 @@ static async Task Main()

handler.ConnectCallback = async (ctx, ct) =>
{
DnsEndPoint dnsEndPoint = ctx.DnsEndPoint;
IPAddress[] addresses = await Dns.GetHostAddressesAsync(dnsEndPoint.Host, dnsEndPoint.AddressFamily, ct);
var s = new Socket(SocketType.Stream, ProtocolType.Tcp) { NoDelay = true };
try
{
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
s.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.TcpKeepAliveTime, 5);
s.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.TcpKeepAliveInterval, 5);
s.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.TcpKeepAliveRetryCount, 5);
await s.ConnectAsync(ctx.DnsEndPoint, ct);

await s.ConnectAsync(addresses, dnsEndPoint.Port, ct);
return new NetworkStream(s, ownsSocket: true);
}
catch
Expand Down