diff --git a/swift/TutorialCommons/commons b/swift/TutorialCommons/commons
new file mode 100644
index 0000000..e69de29
diff --git a/swift/TutorialCommons/commons.swift b/swift/TutorialCommons/commons.swift
new file mode 100644
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--- /dev/null
+++ b/swift/TutorialCommons/commons.swift
@@ -0,0 +1,60 @@
+//  Created by QuentinArguillere on 17/08/2020.
+//  Copyright © 2020 BelledonneCommunications. All rights reserved.
+//
+
+import Foundation
+import linphonesw
+
+
+func createAndInitializeProxyConfig(core: Core, identity: String, password: String) throws -> ProxyConfig {
+    let factory = Factory.Instance
+    let proxy_cfg = try core.createProxyConfig()
+    let address = try factory.createAddress(addr: identity)
+    let info = try factory.createAuthInfo(username: address.username, userid: "", passwd: password, ha1: "", realm: "", domain: address.domain)
+    core.addAuthInfo(info: info)
+    
+    try proxy_cfg.setIdentityaddress(newValue: address)
+    let server_addr = "sip:" + address.domain + ";transport=tls"
+    try proxy_cfg.setServeraddr(newValue: server_addr)
+    proxy_cfg.registerEnabled = true
+    
+    return proxy_cfg
+}
+
+
+class LoggingUnit
+{
+    class BoolHolder : ObservableObject
+    {
+        @Published var value : Bool
+        init(val : Bool)
+        {
+            value = val
+        }
+    }
+    
+    class LinphoneLoggingServiceImpl: LoggingServiceDelegate {
+        var logsEnabled : BoolHolder!
+        override func onLogMessageWritten(logService: LoggingService, domain: String, lev: LogLevel, message: String) {
+            if (logsEnabled.value)
+            {
+                print("Logging service log: \(message)s\n")
+            }
+        }
+    }
+    
+    var logsEnabled : BoolHolder
+    var logDelegate : LinphoneLoggingServiceImpl
+    var log : LoggingService
+    
+    init()
+    {
+        logsEnabled = BoolHolder(val: true)
+        logDelegate = LinphoneLoggingServiceImpl()
+        logDelegate.logsEnabled = logsEnabled;
+        log = LoggingService.Instance
+        log.addDelegate(delegate: logDelegate)
+        log.logLevel = LogLevel.Debug
+        Factory.Instance.enableLogCollection(state: LogCollectionState.Enabled)
+    }
+}