diff --git a/Utilities/LibMatrix.FederationTest/Controllers/RemoteServerPingController.cs b/Utilities/LibMatrix.FederationTest/Controllers/RemoteServerPingController.cs
new file mode 100644
index 0000000..8d3a5ea
--- /dev/null
+++ b/Utilities/LibMatrix.FederationTest/Controllers/RemoteServerPingController.cs
@@ -0,0 +1,79 @@
+using LibMatrix.Federation;
+using LibMatrix.Federation.Extensions;
+using LibMatrix.FederationTest.Services;
+using LibMatrix.FederationTest.Utilities;
+using LibMatrix.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace LibMatrix.FederationTest.Controllers;
+
+[ApiController]
+public class RemoteServerPingController(FederationTestConfiguration config, FederationKeyStore keyStore, HomeserverResolverService hsResolver) : ControllerBase {
+ [HttpGet]
+ [Route("/ping/{serverName}")]
+ public async Task<object> PingRemoteServer(string serverName) {
+ Dictionary<string, object> responseMessage = [];
+ var hsResolveResult = await hsResolver.ResolveHomeserverFromWellKnown(serverName, enableClient: false);
+ responseMessage["resolveResult"] = hsResolveResult;
+
+ if (!string.IsNullOrWhiteSpace(hsResolveResult.Server)) {
+ try {
+ var ownKey = keyStore.GetCurrentSigningKey();
+ var hs = new AuthenticatedFederationClient(hsResolveResult.Server, new() {
+ PrivateKey = ,
+ OriginServerName = null
+ });
+ var keys = await hs.GetServerKeysAsync();
+ responseMessage["version"] = await hs.GetServerVersionAsync();
+ responseMessage["keys"] = keys;
+
+ responseMessage["keysAreValid"] = keys.SignaturesById[serverName].ToDictionary(
+ sig => (string)sig.Key,
+ sig => keys.ValidateSignature(serverName, sig.Key, Ed25519Utils.LoadPublicKeyFromEncoded(keys.TypedContent.VerifyKeysById[sig.Key].Key))
+ );
+ }
+ catch (Exception ex) {
+ responseMessage["error"] = new {
+ error = "Failed to connect to remote server",
+ message = ex.Message,
+ st = ex.StackTrace,
+ };
+ return responseMessage;
+ }
+ }
+
+ return responseMessage;
+ }
+
+ [HttpPost]
+ [Route("/ping/")]
+ public async IAsyncEnumerable<KeyValuePair<string, object>> PingRemoteServers([FromBody] List<string>? serverNames) {
+ Dictionary<string, object> responseMessage = [];
+
+ if (serverNames == null || !serverNames.Any()) {
+ responseMessage["error"] = "No server names provided";
+ yield return responseMessage.First();
+ yield break;
+ }
+
+ var results = serverNames!.Select(s => (s, PingRemoteServer(s))).ToList();
+ foreach (var result in results) {
+ var (serverName, pingResult) = result;
+ try {
+ responseMessage[serverName] = await pingResult;
+ if (results.Where(x => !x.Item2.IsCompleted).Select(x => x.s).ToList() is { } servers and not { Count: 0 })
+ Console.WriteLine($"INFO | Waiting for servers: {string.Join(", ", servers)}");
+ }
+ catch (Exception ex) {
+ responseMessage[serverName] = new {
+ error = "Failed to ping remote server",
+ message = ex.Message,
+ st = ex.StackTrace,
+ };
+ }
+
+ yield return new KeyValuePair<string, object>(serverName, responseMessage[serverName]);
+ // await Response.Body.FlushAsync();
+ }
+ }
+}
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