diff --git a/lib/cipher.cpp b/lib/cipher.cpp
index 6485da1..561d677 100644
--- a/lib/cipher.cpp
+++ b/lib/cipher.cpp
@@ -80,7 +80,7 @@ Cipher::Cipher(const std::string& method,
     }
 #ifndef USE_BOTAN2
     else if (method.find("chacha20") != std::string::npos) {
-        chacha.reset(new ChaCha(key, iv));
+        chacha.reset(new ChaCha(m_key, m_iv));
         return;
     }
 #endif
@@ -184,7 +184,7 @@ std::string Cipher::randomIv(const std::string &method)
     CipherInfo cipherInfo = cipherInfoMap.at(method);
     if (cipherInfo.type == AEAD) {
         return std::string(cipherInfo.ivLen, static_cast<char>(0));
-    } 
+    }
     return randomIv(cipherInfo.ivLen);
 }
 
diff --git a/lib/controller.cpp b/lib/controller.cpp
index 40e748c..99a281c 100644
--- a/lib/controller.cpp
+++ b/lib/controller.cpp
@@ -110,11 +110,14 @@ bool Controller::start()
 
     if (isLocal) {
         qInfo("Running in local mode.");
+        QHostAddress localAddress = profile.httpProxy()
+            ? QHostAddress::LocalHost
+            : getLocalAddr();
         listen_ret = tcpServer->listen(
-                    getLocalAddr(),
+                    localAddress,
                     profile.httpProxy() ? 0 : profile.localPort());
         if (listen_ret) {
-            listen_ret = udpRelay->listen(getLocalAddr(), profile.localPort());
+            listen_ret = udpRelay->listen(localAddress, profile.localPort());
             if (profile.httpProxy() && listen_ret) {
                 QDebug(QtMsgType::QtInfoMsg) << "SOCKS5 port is"
                                              << tcpServer->serverPort();
diff --git a/lib/encryptor.cpp b/lib/encryptor.cpp
index 9cb8ada..7aef5f3 100644
--- a/lib/encryptor.cpp
+++ b/lib/encryptor.cpp
@@ -75,7 +75,7 @@ void Encryptor::reset()
 
 void Encryptor::initEncipher(std::string *header)
 {
-    const std::string iv = Cipher::randomIv(m_method);
+    std::string iv = Cipher::randomIv(m_method);
     std::string key;
 #ifdef USE_BOTAN2
     if (cipherInfo.type == Cipher::CipherType::AEAD) {
@@ -89,7 +89,7 @@ void Encryptor::initEncipher(std::string *header)
 #ifdef USE_BOTAN2
     }
 #endif
-    enCipher = std::make_unique<QSS::Cipher>(m_method, key, iv, true);
+    enCipher = std::make_unique<QSS::Cipher>(m_method, std::move(key), std::move(iv), true);
 }
 
 void Encryptor::initDecipher(const char *data, size_t length, size_t *offset)
@@ -114,7 +114,7 @@ void Encryptor::initDecipher(const char *data, size_t length, size_t *offset)
 #ifdef USE_BOTAN2
     }
 #endif
-    deCipher = std::make_unique<QSS::Cipher>(m_method, key, iv, false);
+    deCipher = std::make_unique<QSS::Cipher>(m_method, std::move(key), std::move(iv), false);
 }
 
 std::string Encryptor::encrypt(const std::string &in)