Add hopLimit to the DataPacket class, update MeshService to use hopLimit when building its MeshPackets

app/src/main/java/com/geeksville/mesh/DataPacket.kt

@@ -26,7 +26,8 @@ data class DataPacket(
     var from: String? = ID_LOCAL, // a nodeID string, or ID_LOCAL for localhost
     var time: Long = System.currentTimeMillis(), // msecs since 1970
     var id: Int = 0, // 0 means unassigned
-    var status: MessageStatus? = MessageStatus.UNKNOWN
+    var status: MessageStatus? = MessageStatus.UNKNOWN,
+    var hopLimit: Int = 0
 ) : Parcelable {
 
     /**
@@ -60,7 +61,8 @@ data class DataPacket(
         parcel.readString(),
         parcel.readLong(),
         parcel.readInt(),
-        parcel.readParcelable(MessageStatus::class.java.classLoader)
+        parcel.readParcelable(MessageStatus::class.java.classLoader),
+        parcel.readInt()
     ) {
     }
 
@@ -77,6 +79,7 @@ data class DataPacket(
         if (dataType != other.dataType) return false
         if (!bytes!!.contentEquals(other.bytes!!)) return false
         if (status != other.status) return false
+        if (hopLimit != other.hopLimit) return false
 
         return true
     }
@@ -89,6 +92,7 @@ data class DataPacket(
         result = 31 * result + dataType
         result = 31 * result + bytes!!.contentHashCode()
         result = 31 * result + status.hashCode()
+        result = 31 * result + hopLimit
         return result
     }
 
@@ -100,6 +104,7 @@ data class DataPacket(
         parcel.writeLong(time)
         parcel.writeInt(id)
         parcel.writeParcelable(status, flags)
+        parcel.writeInt(hopLimit)
     }
 
     override fun describeContents(): Int {
@@ -115,6 +120,7 @@ data class DataPacket(
         time = parcel.readLong()
         id = parcel.readInt()
         status = parcel.readParcelable(MessageStatus::class.java.classLoader)
+        hopLimit = parcel.readInt()
     }
 
     companion object CREATOR : Parcelable.Creator<DataPacket> {

app/src/main/java/com/geeksville/mesh/service/MeshService.kt

@@ -540,10 +540,12 @@ class MeshService : Service(), Logging {
         destId: String,
         wantAck: Boolean = false,
         id: Int = 0,
+        hopLimit: Int = 0,
         initFn: MeshProtos.SubPacket.Builder.() -> Unit
     ): MeshPacket = newMeshPacketTo(destId).apply {
         this.wantAck = wantAck
         this.id = id
+        this.hopLimit = hopLimit
         decoded = MeshProtos.SubPacket.newBuilder().also {
             initFn(it)
         }.build()
@@ -564,6 +566,7 @@ class MeshService : Service(), Logging {
             val bytes = data.payload.toByteArray()
             val fromId = toNodeID(packet.from)
             val toId = toNodeID(packet.to)
+            val hopLimit = packet.hopLimit
 
             // If the rxTime was not set by the device (because device software was old), guess at a time
             val rxTime = if (packet.rxTime == 0) packet.rxTime else currentSecond()
@@ -584,7 +587,8 @@ class MeshService : Service(), Logging {
                         time = rxTime * 1000L,
                         id = packet.id,
                         dataType = data.portnumValue,
-                        bytes = bytes
+                        bytes = bytes,
+                        hopLimit = hopLimit
                     )
                 }
             }
@@ -598,7 +602,7 @@ class MeshService : Service(), Logging {
     }.build()
 
     private fun toMeshPacket(p: DataPacket): MeshPacket {
-        return buildMeshPacket(p.to!!, id = p.id, wantAck = true) {
+        return buildMeshPacket(p.to!!, id = p.id, wantAck = true, hopLimit = p.hopLimit) {
             data = makeData(p.dataType, ByteString.copyFrom(p.bytes))
         }
     }