diff --git a/MatrixMediaGate/Program.cs b/MatrixMediaGate/Program.cs
new file mode 100644
index 0000000..a812d78
--- /dev/null
+++ b/MatrixMediaGate/Program.cs
@@ -0,0 +1,83 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Text.Json;
+using MatrixMediaGate;
+using MatrixMediaGate.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddSingleton<ProxyConfiguration>();
+builder.Services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
+builder.Services.AddScoped<AuthValidator>();
+
+var app = builder.Build();
+
+async Task Proxy(ProxyConfiguration cfg, AuthValidator auth, HttpContext ctx, ILogger<Program> logger) {
+ if (ctx is null) return;
+ var path = ctx.Request.Path.Value;
+ if(path is null) return;
+ if (path.StartsWith('/'))
+ path = path[1..];
+ path += ctx.Request.QueryString.Value;
+
+#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
+ auth.UpdateAuth();
+#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
+
+ using var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.None };
+
+ using var hc = new HttpClient(handler) { BaseAddress = new Uri(cfg.Upstream) };
+ var method = new HttpMethod(ctx.Request.Method);
+ using var req = new HttpRequestMessage(method, path);
+ foreach (var header in ctx.Request.Headers) {
+ if (header.Key != "Accept-Encoding" && header.Key != "Content-Type" && header.Key != "Content-Length") req.Headers.Add(header.Key, header.Value.ToArray());
+ }
+
+ if (ctx.Request.ContentLength > 0) {
+ req.Content = new StreamContent(ctx.Request.Body);
+ if (ctx.Request.ContentType != null) req.Content.Headers.ContentType = new MediaTypeHeaderValue(ctx.Request.ContentType);
+ if (ctx.Request.ContentLength != null) req.Content.Headers.ContentLength = ctx.Request.ContentLength;
+ }
+
+ logger.LogInformation($"Proxying {method} {path} to {hc.BaseAddress}{path}");
+
+ using var response = await hc.SendAsync(req, HttpCompletionOption.ResponseHeadersRead);
+ ctx.Response.Headers.Clear();
+ foreach (var header in response.Headers) {
+ if (header.Key != "Transfer-Encoding") ctx.Response.Headers[header.Key] = header.Value.ToArray();
+ }
+
+ ctx.Response.StatusCode = (int)response.StatusCode;
+ ctx.Response.ContentType = response.Content.Headers.ContentType?.ToString() ?? "application/json";
+ await ctx.Response.StartAsync();
+ await using var content = await response.Content.ReadAsStreamAsync();
+ await content.CopyToAsync(ctx.Response.Body);
+ await ctx.Response.Body.FlushAsync();
+ await ctx.Response.CompleteAsync();
+}
+
+async Task ProxyMedia(string serverName, ProxyConfiguration cfg, AuthValidator auth, HttpContext ctx, ILogger<Program> logger) {
+ if (cfg.TrustedServers.Contains(serverName) || auth.ValidateAuth()) {
+ await Proxy(cfg, auth, ctx, logger);
+ }
+ else {
+ ctx.Response.StatusCode = 403;
+ ctx.Response.ContentType = "application/json";
+ await ctx.Response.StartAsync();
+ var json = JsonSerializer.Serialize(new { errcode = "M_FORBIDDEN", error = "Unauthenticated access to remote media has been disabled on this server." });
+ await ctx.Response.WriteAsync(json);
+ await ctx.Response.Body.FlushAsync();
+ await ctx.Response.CompleteAsync();
+ }
+}
+
+app.Map("{*_}", Proxy);
+
+foreach (var route in (string[]) [
+ "/_matrix/media/{version}/download/{serverName}/{mediaId}",
+ "/_matrix/media/{version}/download/{serverName}/{mediaId}/{fileName}",
+ "/_matrix/media/{version}/thumbnail/{serverName}/{mediaId}",
+ ])
+ app.Map(route, ProxyMedia);
+
+app.Run();
\ No newline at end of file
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