connection

问题 The MSDN page on ConnectionState enumeration says "This value is reserved for future versions of the product", for all values except Open and Closed. What does that mean? Are other values even used? However from this StackOverflow answer appears that ConnectionState.Broken is also used. 回答1: After spending some time in Reflector, it looks to me like the Broken and Fetching states are also used in at least one or two places. The best coding practice would be to assume that any of the values

问题 I am facing problem to establish a socket connection from android device to PC's a specific port like 8080 . I just want to create a socket which will connect to the specific port and also write some data stream on that port. I have written some code for this purpose but the code is giving me an exception as: TCP Error:java.net.ConnectException:/127.0.0.1:8080-connection refused I am giving my code as below: private static TextView txtSendStatus; /** Called when the activity is first created.

问题 I have an application that does a lot work on S3, mostly downloading files from it. I am seeing a lot of these kind of errors and I'd like to know if this is something on my code or if the service is really unreliable like this. The code I'm using to read from the S3 object stream is as follows: public static final void write(InputStream stream, OutputStream output) { byte[] buffer = new byte[1024]; int read = -1; try { while ((read = stream.read(buffer)) != -1) { output.write(buffer, 0, read

问题 Hi i want to create a connection to my Oracle database. i previously used ojdbc14.jar and everything was working fine, but the connection should be secure and i want to encrypt the files. so i decided to use ojdbc5.jar now. the jar is im my "libs" folder Reasons for changing from jdbc14 to jdbc6 i want to use Properties for a secure data exchange between my DB and my devices earlier i also tried jdbc5 but with this i only got a java Heap Size error. public class MainActivity extends Activity

问题 I am trying to connect to a remote MySQL database from Classic ASP page, when I write VBScript code in it the website is giving HTTP 500 Internal Server Error. I checked with the host they are saying its not an error from their end. Please help me. <% dim myConnection dim connectString username = "bla" password = "bla" database = "bla" host = "bla" Set myConnection = Server.CreateObject("ADODB.Connection") Set RSTitleList = Server.CreateObject("ADODB.Recordset") connectString = "DRIVER={MySQL

问题 I'm trying to intercept any call to getConnection() method to setup the dbms indentifier . I've implemented an aspect to get it but I don't get anything. Any idea? Thanks! import java.sql.CallableStatement; import java.sql.Connection; import javax.servlet.http.HttpSession; import org.aspectj.lang.annotation.AfterReturning; import org.aspectj.lang.annotation.Aspect; import org.springframework.stereotype.Component; import org.springframework.web.context.request.RequestAttributes; import org

问题 we are developing an Android app which can connect to multiple heart rate sensors simultaneoulsy via Bluetooth Low Energy. We have an implementation which is working quite well, so the code is not the problem. What drives us crazy is the limitation of parallel BLE-connections which seems to be different from device to device. We have a few test devices here: Motorola MotoE and MotoG, a Samsung Galaxy Tab A and an HTC Nexus 9. All of them are running Android 5 or 6, original vendor versions.

问题 we are developing an Android app which can connect to multiple heart rate sensors simultaneoulsy via Bluetooth Low Energy. We have an implementation which is working quite well, so the code is not the problem. What drives us crazy is the limitation of parallel BLE-connections which seems to be different from device to device. We have a few test devices here: Motorola MotoE and MotoG, a Samsung Galaxy Tab A and an HTC Nexus 9. All of them are running Android 5 or 6, original vendor versions.

问题 I have a machine running a java app talking to a mysql instance running on the same instance. the app uses jdbc4 drivers from mysql. I keep getting com.mysql.jdbc.exceptions.jdbc4.CommunicationsException at random times. Here is the whole message. Could not open JDBC Connection for transaction; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was25899 milliseconds ago.The last packet sent successfully to the

问题 When updating from subversion repository using tortoise svn client I get error looking like that: Could not read chunk size: An existing connection was forcibly closed by the remote host. It doesn't prevent me from updating, just interrupts update process, so that I have to repeat update several times, before it is complete. What can cause such behaviour and how to fix it? 回答1: I was getting the "Could not read chunk size" message from clients on several machines. The key to figuring it out