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  • What kind of server configuration is best for a chatting app? [closed]

    - by mohabitar
    I'm just now starting to go deeper into the world of cloud hosting and databases, and am getting overwhelmed by how deep this information goes. It's all a little too much to consume in a short amount of time. I get a lot of pricing information, but I'm unable to determine what that means to me. I'm making what you might compare to an email app. Users can send messages to one another. I just don't understand, out of the several options, what would be ideal for an app like this, where users would be constantly sending and receiving text data. With Amazon DynamoDB, I have to specify a pre-defined throughput with number of reads and writes per second. Sure I can just type 50, but I'm not exactly sure what 50 writes per second represents. I'm trying to determine what would be the most cost efficient solution, and I want to know what a throughput of 50 reads/writes/second compares to. Is that a high number? What is a good throughput number for a message sending app with say 50,000 daily users? I'm just providing specific numbers so I can understand what these throughput numbers represent. 100 transactions/second to me seems like a small number since I'm not familiar with this stuff, so I'm just looking to bring everything in context. What would 100 read/write/second be useful for? Are there any average example values available? And I'm not sure what each service is good for. For a message sending app, is there any reason I'd want to choose say Amazon DynamoDB over Google App Engine? Any insight would be greatly appreciated.

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  • hi, beginner issue with socat [closed]

    - by ams
    the main question is how to begin sending request to server with some data(send request with number) and get data from server?? and second question is how can i solve this simple question (author said) ? In this part, you should write a simple Shell script which receives URL of a website by sending your student number to a server and after creating and sending HTTP request for this URL, receives the desired content. Finally the content should be saved in an HTML file. Steps 1. Connect to port 4000 of the server and send the massage which includes your student number (e.g. 89207704) to the server. Receive the URL in the form of http://www.example.com. Create the HTTP request and send it to the website's server. Receive the content of the URL from the website. Save the content in the HTML file. what i can do? how i begin? thank u all the topology that exercise is speaking about is here Topology is here Is there any easy way to do this?

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  • Sendmail slow to accept emails

    - by Rich
    I have a PHP web app which is using SMTP to sendmail on localhost to send email. I would like sendmail to accept the mail request immediately and queue it for later sending, as I don't want to have user-facing request threads blocked on emails. Sendmail is installed with the default settings on RHEL web servers. Sometimes sendmail is blocking for a long time after the MAIL command is sent -- sometimes taking 60 or 90 seconds to accept the mail. The time take is usually very close to 60 or 90 sec, which makes me think this is some kind of timeout. I have looked in the sendmail logs, and there are plenty of "deferred" emails, but nothing which looks responsible for this delay. How can I diagnose what is slowing down sendmail? How can I configure sendmail to always accept the mail immediately and to queue the mail for later sending? Update: I'm not sure, but it looks like this might be linked to aol.com addresses. I strongly suspect that sendmail is doing some kind of blocking receipient address verification at the accept-email-for-sending stage. How can I disable that, so that sendmail doesn't block my UI threads? Update 2: This only seems to happen at busy times. Perhaps I am running out of sendmail threads or something? How can I check that?

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  • Invalid Entitlement.plist for my iphone?

    - by Rajendra Bhole
    Hi, i m sending .ipa file and ad-hoc provisional profile to my friend for installing my application in his iphone through itunes of windowsXP But it shows invalid entitlement.plist for his iphone. please reply me as soon as possible, Thanks in advance for sending me answer.

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  • Getting PHP error/warnings when using CodeIgniter 2 to send email

    - by Sparky672
    I'm using Ion Auth and trying to implement the forgotten password feature which relies upon an email being sent from CI. My LAMP server is on a shared cPanel account and uses sendmail. However, I have the ability to over-ride any PHP settings with my own php.ini file in the public_html directory. As per the CodeIgniter 2 documentation for configuring email sending, I have done the following... 1) created a file called located at application/config/email.php 2) email.php contains this code: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /* | ------------------------------------------------------------------- | EMAIL SENDING SETTINGS | ------------------------------------------------------------------- */ $config['protocol'] = 'sendmail'; /* End of file email.php */ /* Location: ./application/config/email.php */ 3) The in the application/config/ion_auth.php file, I set this value to TRUE $config['use_ci_email'] = TRUE; The email is successfully sent, but I get a variety of PHP Error Warnings on all pages. These appear on all pages, sometimes two or three times in a row: A PHP Error was encountered Severity: Warning Message: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead Filename: libraries/Email.php Line Number: 704 A PHP Error was encountered Severity: Warning Message: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead Filename: libraries/Email.php Line Number: 709 In addition to the above, these two also show up after the forgotten password form is submitted: A PHP Error was encountered Severity: Warning Message: Cannot modify header information - headers already sent by (output started at /home/username/codeigniter/system/core/Exceptions.php:185) Filename: libraries/Session.php Line Number: 675 A PHP Error was encountered Severity: Warning Message: Cannot modify header information - headers already sent by (output started at /home/username/codeigniter/system/core/Exceptions.php:185) Filename: helpers/url_helper.php Line Number: 540 I'm not sure why I would be getting these Error Warnings or how else I am supposed to configure my email sending options. I don't see any other email sending options in the documentation that is related to these particular Warning Messages. When I remove my config/email.php file AND set Ion Auth's use_ci_email to FALSE, the Error Warnings go away. Where did I go wrong? Just before I hit the submit button, I solved this problem. I'm still going to post this question as a learning experience for others. If nobody solves this after a reasonable amount of time, I'll post the solution.

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  • Rails 3.0 beta send_file issues

    - by Amar
    Have you any one try sending file to client_side send_file(url),send_file("#{Rails.root}/public/images/rails.png",:type => "image/png") it gives an error for any file which i am sending Proc:0xb74e606c@/home...../gems/actionpack-3.0.0.beta/lib/action_controller/metal/streaming.rb:95 as simple

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  • Active Mailer doesn't have the application helpers when used with delayed_job v.2

    - by Savvas
    So if I try sending an email with action mailer directly, I can use all application helpers like url_for, content_for etc, but when I try to do the exact same action [sending email] with delayed_job [send_later] I getting a delayed job fail, of undefined function content_for etc, so it is like no helpers are loaded in my ActionMailer. I am using rails 2.3.8, active_mailer 2.3.8 and delayed_job 2.0.3 Thanks!!

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  • FACING ERROR WHILE CALLING AXIS2 WEB SERVICE ...

    - by darshanv
    Hello , I am new to axis ,I have created a web servcie with couple of methods using axis2 and deployed it on tomcat.And am calling that web service from my android program with the help of ksoap.But wen i call a method which doesn't take any parameter am gettin fine reply from web service which i can able to see on my screen,But wen i call anothr method which takes a string argument am getting namespace exception on server WEB SERVICE CODE IS ..... package Guru; public class DarshanSays { public String getMsg(String h) { return h+" ..the power of change is eVolution..."; } public String getEmpty(String d)throws Exception { return "empty string from tomcattttttttttt"; } } //AND program is String soap_action="http://Guru/getEmpty"; String method_nm="getEmpty"; String nmspc="http://Guru/"; String url7="//192.168.10.182:8080/axis2/services/Friday";//http: SoapObject request = new SoapObject(url7,method_nm); /*sending method parameters with SoapObject */ request.newInstance(); request.addProperty("h","darshan.....");//sending a parameter to a method SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.bodyOut=request; envelope.dotNet = true; envelope.encodingStyle = SoapSerializationEnvelope.XSD; Log.d("Step","3"); envelope.dotNet=true; /*setting outputsoap object sending request */ envelope.setOutputSoapObject(request); /*HttpTransportSE object creating sending it url */ androidHttpTransport = new HttpTransportSE(url7); //androidHttpTransport.setXmlVersionTag(""); Log.d("Step","4"); try{ androidHttpTransport.debug=true; androidHttpTransport.call(nmspc,envelope); } catch(Exception e) { Log.d("Transportcall",""+e); alert=new AlertDialog.Builder(this); alert.setMessage(""+e); alert.show(); } //exception is throw. Log.d("Step","5"); try { Log.d("giving...","resp"); SoapPrimitive sp=(SoapPrimitive)envelope.getResponse(); String hh=sp.toString(); Log.d("reply from web ser",".."+hh.toString()); //and erorr msg is SoapFault - faultcode:'soapenv:Server' faultstring: 'namespace mismatch require http://Guru found 192.168.10.182:8080/axis2/services/Friday' faultactor: 'null' detail: org.kxml2.kdom.Node@43d31390 ERROR IS coming only when am calling parameterized method. I am facing this issue only when am giving a call to parameterized method. Please Help.. thanks Darshan V

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  • Converting to and from Unicode in PHP

    - by Chris
    Hey, I'm using php 5 and need to communicate with another server that runs completely in unicode. I need to convert every string to unicode before sending it over. This seems like an easy task, but I haven't been able to find a way to do it yet. Is there a simple function that returns a unicode string? i.e. convert_to_unicode("the string i'm sending")

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  • PHP - Redirect and send data via POST

    - by Jeremy Rudd
    I have an online gateway which requires an HTML form to be submitted with hidden fields. I need to do this via a PHP script without any HTML forms (I have the data for the hidden fields in a DB) To do this sending data via GET: header('Location: http://www.provider.com/process.jsp?id=12345&name=John'); And to do this sending data via POST?

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  • Ruby Large HTML getting error, limit to header size

    - by Joe Stein
    def mailTo(subject,msg,folks) begin Net::SMTP.start('localhost', 25) do |smtp| smtp.send_message "MIME-Version: 1.0\nContent-type: text/html\nSubject: #{subject}\n#{msg}\n#{DateTime.now}\n", '[email protected]', folks end rescue => e puts "Emailing Sending Error - #{e}" end end when the HTML is VERY large I get this exception Emailing Sending Error - 552 5.6.0 Headers too large (32768 max) how can i get a larger html above max to work with Net::SMTP in Ruby

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  • how to send push JSON to urban airship server using api

    - by Viswa
    I am using urban airship for sending push notification, i finished all configuration in my app and i can send notification from urban airship website. Now i have to request urban airship api for sending push notification (using this " https://go.urbanairship.com/api/push/") URL and i have send json like this { "apids": [ "some APID", "another APID" ], "aliases": ["my_alias"], "tags": ["tag1", "tag2"], "android": { "alert": "Hello from Urban Airship!", "extra": {"a_key":"a_value"} } } i want to send push notification for single device, i think i have to do this using APID, isn't it?.

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  • python: send a list/dict over network

    - by facha
    Hi, everyone I'm looking for an easy way of packing/unpacking data structures for sending over the network: on client just before sending: a = ((1,2),(11,22,),(111,222)) message = pack(a) and then on server: a = unpack(message) Is there a library that could do pack/unpack magic? Thanks in advance

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  • Ruby Large HTML emails getting error, limit to header size

    - by Joe Stein
    def mailTo(subject,msg,folks) begin Net::SMTP.start('localhost', 25) do |smtp| smtp.send_message "MIME-Version: 1.0\nContent-type: text/html\nSubject: #{subject}\n#{msg}\n#{DateTime.now}\n", '[email protected]', folks end rescue => e puts "Emailing Sending Error - #{e}" end end when the HTML is VERY large I get this exception Emailing Sending Error - 552 5.6.0 Headers too large (32768 max) how can i get a larger html above max to work with Net::SMTP in Ruby

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  • Running cUrl cmd from Win7 doesn't work, but on Linux it does.

    - by jkidv
    Like the title says. I'm sending a simple cUrl cmd from Win7 to CouchDB on my Linux box, and it doesn't work. But if I run the same command in Linux, it works. I'm sending this: curl -X POST 192.168.2.5:5984/test/testdoc -d '{"owner":{"fname":"test","lname":"ing"}}' From windows, it keeps giving me a "error: bad request, reason:invalid UTF-8 JSON". I can run GET commands from windows just fine, I just can't seem to POST to CouchDB.

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  • How to get status code(409 for conflict) and message("your code is conflict") through falut event in

    - by Ankur
    I am calling a server method through HTTPService from client side and in response i am sending sending status code(409 for conflict) and message("your code is conflicted") from serverside on error but on client side in fault event i am getting status code 0 and message = "faultCode:Server.Error.Request faultString:'HTTP request error' faultDetail:'Error: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: Stream Error. URL:" I want to know how to get the actual status code and message in fault event.

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  • Perl Regular Expression [] for <>

    - by bmucklow
    So I am trying to read an XML file into a string in Perl and send it as part of a SOAP message. I know this is not ideal as there are methods for SOAP sending files, however, I am limited to having to use the SOAP that is set up, and it is not set up for sending with file support. Therefore I need to parse out the markup tags < and replace them with []. What is the best way to do this?

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  • Display multiple language using j2me

    - by vasu
    hai, V did the mobile application using j2me which is sending SMS in mobile, when sending sms in english is working fine.... but i want the all language to display the message (eg) if i send sms in hindi it should display same hindi language in recepiant mobile.... what is the method to code in my application.... Thanks in advance

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  • odd response after INVITE request, SIP

    - by supersk
    After sending an invite request i receive a trying answer, and immidietly after that i receive error 407 proxy authentication required. After sending ack & another invite with the proxy header i receive session progress about 1/4 of the time!! other times it just sends 407 error again & again. Any ideas?

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  • Win 7 doesn't have SMTP Server

    - by Son
    Currently, i am working on sending/receiving mail project on Win7, i want to use Seolib.dll (COM) to handle for event sending/receiving mails but Win7 is not supported this one. So is there any solution for this issue?

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  • pass value from page to another in PHP

    - by Piyush
    I am sending login status = fail, back to my login page.Here is my code- header("location:index.php?login=fail"); but that is sending through URL like- http://localhost/303/index.php?login=fail is there any way to pass value without showing in URL? And how to get this value on the second page?

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  • How To Send thousands of javaMails simultaneously ?

    - by ylazez
    greetings all i am building a web app(smth like a forums) that will need to send thousands of emails simultaneously i think that it would be such a big load on the app to handle sending the emails, so i want to use another service or framework to handle sending the emails in asynchronous way so that there will be no load on the app, maybe JMS , i don't know, please suggest me a good solution.

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  • cancel meeting from out look using C#

    - by yogi
    Hi , could you please tell me that if i want to remove the meeting from caledar by sending the mail how can i do it. i am sending the meetig request to outlook through the c# its working fine but i want the cacncellatiion also. is it possible ? waiting for your reply please help me out !! Thanks yogi !!

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