1 files changed, 22 insertions, 0 deletions
diff --git a/DomainDig/HTTPHeadersService.swift b/DomainDig/HTTPHeadersService.swift
new file mode 100644
index 0000000..a297165
--- /dev/null
+++ b/DomainDig/HTTPHeadersService.swift
@@ -0,0 +1,22 @@
+import Foundation
+
+struct HTTPHeadersService {
+    static func fetch(domain: String) async throws -> [HTTPHeader] {
+        let url = URL(string: "https://\(domain)")!
+        var request = URLRequest(url: url, timeoutInterval: 10)
+        request.httpMethod = "HEAD"
+
+        let (_, response) = try await URLSession.shared.data(for: request)
+
+        guard let httpResponse = response as? HTTPURLResponse else {
+            throw URLError(.badServerResponse)
+        }
+
+        return httpResponse.allHeaderFields.compactMap { key, value in
+            guard let name = key as? String,
+                  let val = value as? String else { return nil }
+            return HTTPHeader(name: name, value: val)
+        }
+        .sorted { $0.name.lowercased() < $1.name.lowercased() }
+    }
+}