diff --git a/lib/swift/Sources/LinuxHelper.swift b/lib/swift/Sources/LinuxHelper.swift
new file mode 100644
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--- /dev/null
+++ b/lib/swift/Sources/LinuxHelper.swift
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+
+import Foundation
+import CoreFoundation
+
+#if os(Linux)
+/// Extensions for Linux for incomplete Foundation API's.
+/// swift-corelibs-foundation is not yet 1:1 with OSX/iOS Foundation
+
+extension CFSocketError {
+  public static let success = kCFSocketSuccess
+}
+  
+extension UInt {
+  public static func &(lhs: UInt, rhs: Int) -> UInt {
+    let cast = unsafeBitCast(rhs, to: UInt.self)
+    return lhs & cast
+  }
+}
+
+#else
+extension CFStreamPropertyKey {
+  static let shouldCloseNativeSocket  = CFStreamPropertyKey(kCFStreamPropertyShouldCloseNativeSocket)
+  // Exists as Stream.PropertyKey.socketSecuritylevelKey but doesn't work with CFReadStreamSetProperty
+  static let socketSecurityLevel      = CFStreamPropertyKey(kCFStreamPropertySocketSecurityLevel)
+  static let SSLSettings              = CFStreamPropertyKey(kCFStreamPropertySSLSettings)
+}
+#endif