- Added Bind Address configuration variable.

app/src/main/kotlin/com/tutpro/baresip/ConfigActivity.kt

@@ -16,6 +16,7 @@ class ConfigActivity : AppCompatActivity() {
 
     internal lateinit var autoStart: CheckBox
     internal lateinit var listenAddr: EditText
+    internal lateinit var bindAddr: EditText
     internal lateinit var preferIPv6: CheckBox
     internal lateinit var dnsServers: EditText
     internal lateinit var certificateFile: CheckBox
@@ -29,6 +30,7 @@ class ConfigActivity : AppCompatActivity() {
 
     private var oldAutoStart = ""
     private var oldListenAddr = ""
+    private var oldBindAddr = ""
     private var oldPreferIPv6 = ""
     private var oldDnsServers = ""
     private var oldCertificateFile = false
@@ -59,6 +61,11 @@ class ConfigActivity : AppCompatActivity() {
         oldListenAddr = if (laCv.size == 0) "" else laCv[0]
         listenAddr.setText(oldListenAddr)
 
+        bindAddr = findViewById(R.id.BindAddress) as EditText
+        val baCv = Config.variable("net_interface")
+        oldBindAddr = if (baCv.size == 0) "" else baCv[0]
+        bindAddr.setText(oldBindAddr)
+
         preferIPv6 = findViewById(R.id.PreferIPv6) as CheckBox
         val piCv = Config.variable("net_prefer_ipv6")
         oldPreferIPv6 = if (piCv.size == 0) "no" else piCv[0]
@@ -177,6 +184,19 @@ class ConfigActivity : AppCompatActivity() {
                     restart = true
                 }
 
+                val bindAddr = bindAddr.text.toString().trim()
+                if (bindAddr != oldBindAddr) {
+                    if ((bindAddr != "") && !Utils.checkIp(bindAddr) && !Utils.checkIfName(bindAddr)) {
+                        Utils.alertView(this, getString(R.string.notice),
+                                "${getString(R.string.invalid_bind_address)}: $bindAddr")
+                        return false
+                    }
+                    Config.remove("net_interface")
+                    if (bindAddr != "") Config.add("net_interface", bindAddr)
+                    save = true
+                    restart = true
+                }
+
                 var preferIPv6String = "no"
                 if (preferIPv6.isChecked) preferIPv6String = "yes"
                 if (oldPreferIPv6 != preferIPv6String) {
@@ -375,6 +395,10 @@ class ConfigActivity : AppCompatActivity() {
                 Utils.alertView(this, getString(R.string.listen_address),
                         getString(R.string.listen_address_help))
             }
+            findViewById(R.id.BindAddressTitle) as TextView-> {
+                Utils.alertView(this, getString(R.string.bind_address),
+                        getString(R.string.bind_address_help))
+            }
             findViewById(R.id.PreferIPv6Title) as TextView-> {
                 Utils.alertView(this, getString(R.string.prefer_ipv6),
                         getString(R.string.prefer_ipv6_help))

app/src/main/kotlin/com/tutpro/baresip/Utils.kt

@@ -110,7 +110,7 @@ object Utils {
                 checkIpV6(bracketedIp.substring(1, bracketedIp.length - 2))
     }
 
-    private fun checkIp(ip: String): Boolean {
+    fun checkIp(ip: String): Boolean {
         return checkIpV4(ip) || checkIpV6(ip)
     }
 
@@ -215,6 +215,13 @@ object Utils {
         return true
     }
 
+    fun checkIfName(name: String): Boolean {
+        if ((name.length < 2) || !name.first().isLetter()) return false
+        for (c in name)
+            if (!c.isLetterOrDigit()) return false
+        return true
+    }
+
     fun implode(list: List<String>, sep: String): String {
         var res = ""
         for (s in list) {