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POGPS devices comunication functionality with server
 

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    <p>Hi i want to implement gps devices communication functionality in android devices but i don't know how these devices communicate with server that uses these devices data and save these data on server.I have to question about these devices<br> 1-Can server connect these devices and get data and save data on server? Or these devices connect to server and send data to server.<br> this question is important for me because i want to write application for android devices that simulate gps devices functionality on android devices!<br> 2:I research about how to connect from server to android devices and get information about mqtt! can i connect from server to android devices with mqtt?<br> for simulating these devices functionality on android devices on need to know which of server or device connect to other and send data? </p>
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    1. COIf the devices generate the data, it better to send that to server rather than server pooling each device after some time for data. A server communicating with client is good when server has something to tell a device or is asking device for infrequent data. If your GPS data is really infrequent or you want to collect it only at times ( for example where these devices are right now) use mqtt.
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    2. COAnd as far as my reading of MQTT tells me, it's a sms base communication model in which your app will intercept SMSes and process those in a specific format from your server. In response you can send data back to server via internet request or SMS.
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    3. COThanks for your help i want to create a web site that has members with android devices and collect their location and show their location information in web site for example i want to get vehicle location of Transportation Company and show theirs information for admins! there are sites for this purpose that use gps devices to get information from vehicles but i don't know which of server or gps devices connect to other and send information!.I want to get timely location of vehicles and show for admins for this purpose server connect to devices or devices connect to servers and send data?
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