Fixed webchat packets without msgNo

This patch makes a fix in the webchat UI for packets that
don't have a msgNo in the RX'd packets.  Previously the packets
would just show up as a dupe of the previous RX'd packet from
the same callsign.  Webchat UI will now properly show the message
by creating a fake msgNo value based on the contents of the RX'd packet
from_call+addressee+message_text

aprsd/cmds/webchat.py

@@ -500,8 +500,8 @@ def on_send(self, data):
         pkt.prepare()
         self.msg = pkt
         msgs = SentMessages()
-        msgs.add(pkt)
         tx.send(pkt)
+        msgs.add(pkt)
         msgs.set_status(pkt.msgNo, "Sending")
         obj = msgs.get(pkt.msgNo)
         socketio.emit(

aprsd/web/chat/static/js/send-message.js

@@ -510,11 +510,30 @@ function sent_msg(msg) {
     reload_popovers();
 }
 
+function str_to_int(my_string) {
+    total = 0
+    for (let i = 0; i < my_string.length; i++) {
+        total += my_string.charCodeAt(i);
+    }
+    return total
+}
+
 function from_msg(msg) {
    if (!from_msg_list.hasOwnProperty(msg["from_call"])) {
         from_msg_list[msg["from_call"]] = new Array();
    }
 
+   // Try to account for messages that have no msgNo
+   console.log(msg)
+   if (msg["msgNo"] == null) {
+        console.log("Need to add msgNO!!")
+        // create an artificial msgNo
+        total = str_to_int(msg["from_call"])
+        total += str_to_int(msg["addresse"])
+        total += str_to_int(msg["message_text"])
+        msg["msgNo"] = total
+   }
+
    if (msg["msgNo"] in from_msg_list[msg["from_call"]]) {
        // We already have this message
        //console.log("We already have this message msgNo=" + msg["msgNo"]);