Minor improvements

core/src/main/kotlin/ch/dissem/bitmessage/BitmessageContext.kt

@@ -231,12 +231,9 @@ class BitmessageContext(
 
     /**
      * @param host             a trusted node that must be reliable (it's used for every synchronization)
-     * *
      * @param port             of the trusted host, default is 8444
-     * *
-     * @param timeoutInSeconds synchronization should end no later than about 5 seconds after the timeout elapsed, even
-     * *                         if not all objects were fetched
-     * *
+     * @param timeoutInSeconds synchronization should end no later than about 5 seconds after the timeout elapsed,
+     *                         even if not all objects were fetched
      * @param wait             waits for the synchronization thread to finish
      */
     fun synchronize(host: InetAddress, port: Int, timeoutInSeconds: Long, wait: Boolean) {
@@ -259,13 +256,10 @@ class BitmessageContext(
     /**
      * Send a custom message to a specific node (that should implement handling for this message type) and returns
      * the response, which in turn is expected to be a [CustomMessage].
-
+     *
      * @param server  the node's address
-     * *
      * @param port    the node's port
-     * *
      * @param request the request
-     * *
      * @return the response
      */
     fun send(server: InetAddress, port: Int, request: CustomMessage): CustomMessage {
@@ -284,23 +278,20 @@ class BitmessageContext(
      * Sends messages again whose time to live expired without being acknowledged. (And whose
      * recipient is expected to send acknowledgements.
      *
-     *
      * You should call this method regularly, but be aware of the following:
      *
      *  * As messages might be sent, POW will be done. It is therefore not advised to
-     * call it on shutdown.
+     *    call it on shutdown.
      *  * It shouldn't be called right after startup, as it's possible the missing
-     * acknowledgement was sent while the client was offline.
+     *    acknowledgement was sent while the client was offline.
      *  * Other than that, the call isn't expensive as long as there is no message
-     * to send, so it might be a good idea to just call it every few minutes.
-     *
+     *    to send, so it might be a good idea to just call it every few minutes.
      */
     fun resendUnacknowledgedMessages() {
         internals.resendUnacknowledged()
     }
 
-    val isRunning: Boolean
-        get() = internals.networkHandler.isRunning
+    fun isRunning() = internals.networkHandler.isRungning
 
     fun addContact(contact: BitmessageAddress) {
         internals.addressRepository.save(contact)

core/src/main/kotlin/ch/dissem/bitmessage/entity/Plaintext.kt

@@ -262,7 +262,15 @@ class Plaintext private constructor(
     fun write(out: OutputStream, includeSignature: Boolean) {
         Encode.varInt(from.version, out)
         Encode.varInt(from.stream, out)
-        if (from.pubkey == null) {
+        from.pubkey?.apply {
+            Encode.int32(behaviorBitfield, out)
+            out.write(signingKey, 1, 64)
+            out.write(encryptionKey, 1, 64)
+            if (from.version >= 3) {
+                Encode.varInt(nonceTrialsPerByte, out)
+                Encode.varInt(extraBytes, out)
+            }
+        } ?: {
             Encode.int32(0, out)
             val empty = ByteArray(64)
             out.write(empty)
@@ -271,17 +279,9 @@ class Plaintext private constructor(
                 Encode.varInt(0, out)
                 Encode.varInt(0, out)
             }
-        } else {
-            Encode.int32(from.pubkey!!.behaviorBitfield, out)
-            out.write(from.pubkey!!.signingKey, 1, 64)
-            out.write(from.pubkey!!.encryptionKey, 1, 64)
-            if (from.version >= 3) {
-                Encode.varInt(from.pubkey!!.nonceTrialsPerByte, out)
-                Encode.varInt(from.pubkey!!.extraBytes, out)
-            }
-        }
+        }.invoke()
         if (type == MSG) {
-            out.write(to!!.ripe)
+            out.write(to?.ripe ?: throw IllegalStateException("No recipient set for message"))
         }
         Encode.varInt(encodingCode, out)
         Encode.varInt(message.size, out)

core/src/main/kotlin/ch/dissem/bitmessage/utils/Property.kt

@@ -52,22 +52,32 @@ class Property private constructor(
     }
 
     override fun toString(): String {
-        return toString("")
+        return toJson("")
     }
 
-    private fun toString(indentation: String): String {
+    @JvmOverloads
+    fun toJson(indentation: String = ""): String {
         val result = StringBuilder()
-        result.append(indentation).append(name).append(": ")
+        result.append(indentation).append('"').append(name).append('"').append(": ")
         if (value != null || properties.isEmpty()) {
-            result.append(value)
-        }
-        if (properties.isNotEmpty()) {
+            result.append(asJson(value, indentation))
+        } else if (properties.isNotEmpty()) {
             result.append("{\n")
-            for (property in properties) {
-                result.append(property.toString(indentation + "  ")).append('\n')
-            }
-            result.append(indentation).append("}")
+            result.append(properties.map { it.toJson(indentation + "  ") }.reduce { l, r -> "$l,\n$r" })
+            result.append('\n').append(indentation).append("}")
+        } else {
+            result.append("null")
         }
         return result.toString()
     }
+
+    private fun asJson(value: Any?, indentation: String): String = when (value) {
+        null -> "null"
+        is Number, is Boolean -> value.toString()
+        is Property -> value.toJson(indentation)
+        is Collection<*> -> """[
+${value.map { asJson(it, indentation + "    ") }.reduce { l, r -> "$indentation  $l,\n$indentation  $r" }}
+$indentation]"""
+        else -> "\"$value\""
+    }
 }