disconnection | 易学教程

Disconnect programmatically from firebase

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问题 How to programmatically disconnect the user? Here is my problem: I know that the maximum of simultaneous connection is 100 with firebase but in my application, I'm retrieving all the data from the database and then I don't need it anymore so is it possible to disconnect the phone from firebase programmatically? 回答1: Invoking: FirebaseDatabase.getInstance().goOffline(); is the way to disconnect the connection from firebase programmatically. Putting the call at the end of your onStart callback

Disconnect a bluetooth socket in Android

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问题 I'm developing a program in which, from an Android Phone, I have to connect as a client to a Bluetooth medical sensor. I'm using the official Bluetooth API and no problem during connection (SPP profile), but when I end the socket, the sensor is still connected to my phone (although I have close the connection). Are there any way to make a Bluetooth disconnection? I think there is an intent called ACTION_ACL_CONNECTED, which does that. Can anyone explain me how to use this? Thanks in advance.

Linux Socket: How to detect disconnected network in a client program?

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I am debugging a c based linux socket program. As all the examples available in websites, I applied the following structure: sockfd= socket(AF_INET, SOCK_STREAM, 0); connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)); send_bytes = send(sockfd, sock_buff, (size_t)buff_bytes, MSG_DONTWAIT); I can detect the disconnection when the remove server closes its server program. But if I unplug the ethernet cable, the send function still return positive values rather than -1. How can I check the network connection in a client program assuming that I can not change server side? But if I

Linux Socket: How to detect disconnected network in a client program?

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问题 I am debugging a c based linux socket program. As all the examples available in websites, I applied the following structure: sockfd= socket(AF_INET, SOCK_STREAM, 0); connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)); send_bytes = send(sockfd, sock_buff, (size_t)buff_bytes, MSG_DONTWAIT); I can detect the disconnection when the remove server closes its server program. But if I unplug the ethernet cable, the send function still return positive values rather than -1. How can I

Disconnect a bluetooth socket in Android

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I'm developing a program in which, from an Android Phone, I have to connect as a client to a Bluetooth medical sensor. I'm using the official Bluetooth API and no problem during connection (SPP profile), but when I end the socket, the sensor is still connected to my phone (although I have close the connection). Are there any way to make a Bluetooth disconnection? I think there is an intent called ACTION_ACL_CONNECTED, which does that. Can anyone explain me how to use this? Thanks in advance. EDITED: Here is the code, if anyone needs additional info, it's a Nonin 4100 medical sensor. Set