mobile: add host mode in NetCfg (#933)

apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt

@@ -1293,6 +1293,8 @@ class ArchiveConfig(val archivePath: String, val disableCompression: Boolean? =
 @Serializable
 data class NetCfg(
   val socksProxy: String? = null,
+  val hostMode: HostMode = HostMode.OnionViaSocks,
+  val requiredHostMode: Boolean = false,
   val tcpConnectTimeout: Long, // microseconds
   val tcpTimeout: Long, // microseconds
   val tcpKeepAlive: KeepAliveOpts?,
@@ -1322,6 +1324,13 @@ data class NetCfg(
   }
 }
 
+@Serializable
+enum class HostMode {
+  @SerialName("onionViaSocks") OnionViaSocks,
+  @SerialName("onion") Onion,
+  @SerialName("public") Public;
+}
+
 @Serializable
 data class KeepAliveOpts(
   val keepIdle: Int, // seconds

apps/ios/SimpleXChat/APITypes.swift

@@ -516,6 +516,8 @@ public struct ArchiveConfig: Encodable {
 
 public struct NetCfg: Codable, Equatable {
     public var socksProxy: String? = nil
+    public var hostMode: HostMode = .publicHost
+    public var requiredHostMode = false
     public var tcpConnectTimeout: Int // microseconds
     public var tcpTimeout: Int // microseconds
     public var tcpKeepAlive: KeepAliveOpts?
@@ -540,6 +542,12 @@ public struct NetCfg: Codable, Equatable {
     public var enableKeepAlive: Bool { tcpKeepAlive != nil }
 }
 
+public enum HostMode: String, Codable {
+    case onionViaSocks
+    case onionHost = "onion"
+    case publicHost = "public"
+}
+
 public struct KeepAliveOpts: Codable, Equatable {
     public var keepIdle: Int // seconds
     public var keepIntvl: Int // seconds