Hey I am making server client system with asyncsocket class for cocoa, I really don't get it, do I have to send a message to the server in order to receive something, it seems so. Server should send me a message when I connect, but I won't get anything unless I send the server a message which goes pretty strange, same applies, I have to send another message to get a message?
Here is server code, as you see it should send a message when someone connects, which it doesn't do unless I send it a message from client. See code for server
Here is code for client where I send two messages to receive messages from the server.
See client code here: http:://pastebin.com/1B7qy9R2 remove other : from link as it's my first post so no 2 link allowed :(
I either have understood the asyncsocket wrongly or there is a bug, but if someone would help it would be appericiated.
You don’t have to send data before you can receive some. This happens in your code, because you are only calling readDataWithTimeout:tag: in your onSocket:didWriteDataWithTag: delegate method.
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I am hoping someone can point me in the right direction. I have a CF2021 Server which uses a Node.js websocket server and CF pages (via javascript) as a client. Messages from user to user work as expected, so no issue there.
This CF Server also has a custom API built using CFML that handles and routes inbound SMS messages. My question is; what would be the best way to send the SMS message (by now its json) to the Node.js websocket to it can send it to the user(s).
I tried using the same javascript that the browser client uses, but it appears that the CFML API script is "browser-less", so that doesn't work, or should it?
I thought something like Apache Groovy may be the solution, but I am having difficulties with any websocket example I have found.
Any suggestions would be greatly appreciated.
thanks in advance
Flow matters.
If you want to handle an incoming message by delivering it to all currently logged in users who are subscribed to messages of the current sort: set up your message handler to deliver using lucee/adobe-coldfusion websockets. Be forewarned, Lucee takes some setup time, but once running, it is a great solution.
If you don't need immediate delivery, or you need a super simple solution: I actually have had some success with "Long Polling" you just have to remember to use "flush" early in the request, before any pause/sleep, then loop your message lookup requests for new data, with a 1-5 second delay between each loop. Once new data is found, I like to return the request to the client, close that polling request and start a new polling request using the client side. I typically won't poll for more than 60 seconds. Even if the returned json object is empty.
I have an application which uses IBM MQ to send out the request in a queue manager to a particular system B.
The response corresponding to that request is then received back from system B by the application in a sync call and then further business processing happens.
Since we are working on the offshore region, we do not actually send out the request to system B but rather capture it ourselves using the MQJExplorer tool and send back the response, which kind of simulates the prod. behaviour.
The problem here is, or i would say, the overhead is that we have to manually open the mqjexplorer tool, check the request, take a particular attribute from the request(lets say ID), and send back ID+1 so that the application recognizes the response is for ID-1 request.
I would like to know if this particular thing can be automated, with some other tool, where i can define like whenever any such kind of request is received in for eg: MQ001 queue manager and its REQ queue, just extract the ID attribute, do a ID+1 and send back the response in RESP queue of same qm.
There are a pair of IBM supplied samples that come with IBM MQ:-
amqsreq0.c - Sample C program that puts request messages to a message queue and shows the replies (example using REPLY queue)
amqsecha.c - Sample C program - echo messages to reply to queue
They are supplied to allow you to try out a request/reply application.
You already have the equivalent app to do the job that amqsreq0.c does, and you could adapt amqsecha.c to extract your ID attribute, increment it, and then the sample already has the code to send the reply back.
It can be automated by running as a triggered application too.
If 'C' language is not your thing and prefer Java then have a read of a blog posting I did in 2017. It is a complete request/reply scenario with 2 applications: BEServer01.java and RQClient01.java
You can modify BEServer01.java to your liking (and remove the SQL code). BEServer01.java contains all of the code for getting a request message and sending a reply message. Simply replace the variable 'replyText' contents with the reply message that you want.
If you are not a programmer then there is another option but it does not modify the message contents. MQ Visual Edit has a component called: SIM Server. Its purpose is to simulate a server-side component. You configure what 'request' queue to get the messages from and what the reply message text will be. When a messages lands on the request queue, the SIM Server will retrieve it and send the reply message to the queue & queue manager specified in the MQMD's ReplyToQueueName and ReplyToQueueManagerName fields.
First the "email send" works fine but now It doesn't work anymore and when I print the error this is the text:
ERRORE {"name":"SparkPostError","errors":[{"message":"Message generation rejected","description":"Exceed Sending Limit (sandbox)","code":"1902"}],"statusCode":400}
Anyone can explein me how I'm wroing?
This error says that you have reached the limit of messages sent from sparkpostbox.com and now must register your own sending domain. You can read about how to do that here.
Each new SparkPost account may send a fixed number of messages addressed 'From:' sparkpostbox.com. After that, the idea is that you register your own sending domain and send from that instead.
The sandbox options allows you to send using the #sparkpostbox.com domain. It is currently limited to 50 sends for the lifetime of the account. At this time you should have a verified sending domain to use going forward. If you are looking for information on testing using SparkPost, take a look at this support document: https://support.sparkpost.com/customer/portal/articles/2361300
Source of the answer for your question is there: Error "Fatal SparkPostError: Exceed Sending Limit" when sandbox=true
In order for a number to receive Sms messages, it appears I must enter a value for the Request URL associated with the number. However I do not need to notified of messages in a callback. I'm wondering what value I can put in here that will basically do nothing but still allow me to retrieving messages via the polling mechanism?
Thanks,
Dan
Twilio developer evangelist here.
You can use a URL that responds with an empty <Response> TwiML element. If you don't have a server to host that on, you could use http://twimlets.com. This link ought to do the trick:
http://twimlets.com/echo?Twiml=%3CResponse%3E%3C%2FResponse%3E&
I'm building a Grails app which queries several API's across the Web. The problem is that this queries are very time consuming and it is really annoying for the user to click one button and wait so much time without nothing changes in the page.
The basic architecture of my app is, when the user clicks the button, the client side performs an Ajax request with Prototype library to the server side. The server side, then, connects to the Last.fm API and retrieve a list of events. When the server side is finished populating the list with events it sends a JSON response to the client side which allows the client side to create markers for each event on a Google map.
What I want to achieve is, instead of waiting for all the events being retrieved from the API to send the JSON response, the server side sends a JSON response as soon as it retrieve one event, allowing the client side to populate the map while other events are yet being retrieved.
Any ideas how can I implement this? I read about the concept of Ajax Push but I'm not sure if it is what I need.
Thanks for the help!
There is no way to open a listening connection on the client that your server might connect to. Instead, what you need is a connection to the server that is kept alive and can be used to receive events. This way, you could directly return the "action" request and inform the client through your persistent event connection once the last.fm request was completed.
That said, the way I would implement is using ajax keep alive.
Take a look at cometd plugin.