[jamesjefferies]

Thanks B0b for posting your java, I was attempting to get it working using the Stomp rubygem with the ruby example, but it seemed to keep dropping the connection... (and thanks to poggs for clearing up to use /topic and not /queue)

however, all works well with Gozirra, so I'm making progress.

Typical timing though, off to North Wales for hols for a couple of weeks, just when I want to do some JSON parsing!

[ralphchadkirk]

Still having trouble with it - though I suspect it is me, not Stomp this time.

Basically trying to get the TSRs on the LNE(S) route, the script connects, subscribes with no Stomp errors but stalls when running the readFrame() method, sending the CPU usage up to 100% and crashing out when reaching the maximum time.

[DynamicSpirit]

Thanks for posting that, metroland - and so quickly after the announcement too! I've got my subscription in.

Has anyone had any luck downloading the train schedules? I don't seem to be able to. For example, the developer pack gives the example of using the URL https://datafeeds.networkrail.co.uk/...Y&day=toc-full to download the Northern Rail daily full schedule (Actually the PDF had an extra space after 'ntrod' which I've removed). But whenever I try that URL in the browser, I just get back the error User not subscribed to CIF_ED_FULL_DAILY. But a quick look at my account shows that's rubbish - it's clearly showing my account as active and subscribed to that schedule. Same thing with all the other schedules I've tried.
--- old post above --- --- new post below ---

Originally Posted by dooton

Working on a Java implementation. There documentation could be a little more helpful I do agree!

Agreed. And it's even worse for people like me who inhabit the .NET world, since they don't even provide samples in those languages!

[robh]

Originally Posted by DynamicSpirit

Has anyone had any luck downloading the train schedules? I don't seem to be able to.

I have just tried: https://datafeeds.networkrail.co.uk/...Y&day=toc-full

It works for me, I am subscribed to the schedule "All Full Daily"

Originally Posted by dooton

Working on a Java implementation. There documentation could be a little more helpful I do agree!

I agree, the network rail doc is just a copy of the "Java API" section of the ActiveMQ documentation: https://activemq.apache.org/stomp.html with the key sentence "Note that this API is provided purely for testing purposes and you should always consider using standard JMS API from Java instead of this one." removed.

Can anyone tell me the port that their stomp service is running on? It's something like ***16 if I remember correctly. I was playing around with it at work on Friday and had it working but I can't seem to download the developer PDF here at home as it's asking me for a login and the one for the datafeeds isn't being accepted.

EDIT: Found a cached version (slightly older revision than I was reading on Friday though): https://docs.google.com/viewer?a=v&q...6ST6CMetUZeMKQ

It's port 61618

[DAH]

Originally Posted by ralphchadkirk

Just got access to the live feeds. Unfortunately the documentation for PHP just seems to be a copy and paste from the extension producers website. And it's flatly refusing my username and password despite saying that the security token isn't needed yet...

Having the same problem, just will not connect even though my status is 'Active'.

Getting:

Fatal error: Uncaught exception 'StompException' with message 'Could not connect to datafeeds.networkrail.co.uk:61618 (10/10)' in /<path>/Stomp.php:168
Stack trace: 
#0 <path>/Stomp.php(190): Stomp->_makeConnection() 
#1 <path>/stomp_test.php(7): Stomp->connect() 
#2 {main} thrown in <path>/Stomp.php on line 168

stomp_test.php is using what is suggested in the Developer Pack V4.0.

[Poggs]

Originally Posted by DynamicSpirit

Agreed. And it's even worse for people like me who inhabit the .NET world, since they don't even provide samples in those languages!

I deliberately steered the platform down the Stomp route because it's a simple, neutral standard.

Have you looked at http://activemq.apache.org/nms/ for your .NET requirements?

[ralphchadkirk]

Still haven't got to actually parsing a JSON message yet! This is my first experience of ActiveMQ and Stomp, but I'm having more trouble than I expected. Still got the crashing problem...
--- old post above --- --- new post below ---

Originally Posted by DAH

Having the same problem, just will not connect even though my status is 'Active'.

Getting:

Fatal error: Uncaught exception 'StompException' with message 'Could not connect to datafeeds.networkrail.co.uk:61618 (10/10)' in /<path>/Stomp.php:168
Stack trace: 
#0 <path>/Stomp.php(190): Stomp->_makeConnection() 
#1 <path>/stomp_test.php(7): Stomp->connect() 
#2 {main} thrown in <path>/Stomp.php on line 168

stomp_test.php is using what is suggested in the Developer Pack V4.0.

Are you adding the tcp:// prefix to datafeeds.n...?

[DAH]

Originally Posted by ralphchadkirk

Are you adding the tcp:// prefix to datafeeds.n...?

Yep, I sure am.

[dooton]

Ok so i've just got some JSON back. Tried putting the train ID and schedule id that it returned into open train times and it wasn't found? It was just for fun to see what I had gotten back..

The programming I am ok with, understanding the railways inner workings could be trickier than i thought.

[ralphchadkirk]

Originally Posted by DAH

Yep, I sure am.

That's me out of suggestions then!

For reference, this is the quick 'n' dirty code I'm using just to try and extract a JSON message to see if it all works (unfortunately, it doesn't yet).

PHP Code:

<?php
set_time_limit(120);

    // include a library
    require_once("Stomp.php");
    // make a connection
    $con = new Stomp("tcp://datafeeds.networkrail.co.uk:61618");
    // connect
    $con->connect($user,$pass);

$con->subscribe("/topic/TSR_LNE_S_ROUTE",array('transformation' => 'jms-map-json'));
$msg = $con->readFrame(); // Code stalls on this line
if ( $msg != null) {
        echo "Received array: "; 
        print_r($msg->map);
        // mark the message as received in the queue
        $con->ack($msg);
    } else {
        echo "Failed to receive a message\n";
    }
?>

[ian13]

My advice in PHP is to completely ignore the developer pack.

First, install the PECL STOMP package (just type "pecl install stomp" in the command line).

Then, use code such at the following:

PHP Code:

<?php
// Network Rail Stomp Handler example by ian13
$server = "tcp://datafeeds.networkrail.co.uk:61618";
$user = "username";
$password = "password";
$channel = "TRAIN_MVT_ALL_TOC";

$con = new Stomp($server, $user, $password);
if (!$con) {
    die('Connection failed: ' . stomp_connect_error());
}
$con->subscribe("/topic/" . $channel);
while($con){
    if ($con->hasFrame()){
        $msg = $con->readFrame();
        foreach (json_decode($msg->body) as $event) {
          // do stuff with $event here
        }
        $con->ack($msg);
    }
}
die('Connection lost: ' . time());
?>

[ralphchadkirk]

Ah, interesting, I can get the RTTPM feed with my code, but not the TSR feed. Haven't tried anything else yet.

I'll try your code in a minute Ian.

[DynamicSpirit]

Originally Posted by Poggs

I deliberately steered the platform down the Stomp route because it's a simple, neutral standard.

Have you looked at http://activemq.apache.org/nms/ for your .NET requirements?

Thanks for the link. That looks potentially useful. I haven't looked at that side yet because I'm still trying to figure out how to download the schedules (getting what I'd assume is the easy bit out of the way first).

Out of interest, you say 'I'. Does that mean you had some influence in the choice of platform? (And no problem about the neutral standard. I totally understand that you need something that can be accessed from any platform).

On the schedules, do you need to have a your own Amazon S3 account set up to download them? I don't and I had assumed that was fine since the URL to download schedules is a networkrail one, not an amazon one, but now wondering if that's the problem. I see one of my download attempts has caused a page redirect to https://nr-datafeed-cif.s3.amazonaws.com/.

[Indigo2]

Originally Posted by dooton

Ok so i've just got some JSON back. Tried putting the train ID and schedule id that it returned into open train times and it wasn't found?

Timetable sites such as OpenTrainTimes etc. use codes from the train planning systems, i.e. TIPLOC codes for locations (e.g. HTHRGRN for Hither Green, OXFD for Oxford) and UID codes for individual trains (e.g. C01238, G26384, etc.).

The real-time running data is derived from TRUST/TOPS and uses a completely different set of codes, i.e. STANOX codes for locations (e.g. 88451 for Hither Green, 74446 for Oxford) and TOPS train codes for individual trains, made up of part of the STANOX code for the origin station, the train headcode, and a couple of codes to indicate the rough time of day and date the train started its journey (e.g. 861M58MP01, 121O32MV01 etc.).

Translating between these two sets of codes is a whole big job in itself!

Some good information on codes here and here.

[DAH]

Have tried Ian's way, gone is the 'cannot connect' message and appears to connect but then throws another exception :

Socket connection hasn't been established

Confused

Update, just altered my password and get the same 'socket' message, so guess it isnt connecting afterall.