connection

问题 Is there a simple, fast way to check that a FTP connection (includes host, port, username and password) is valid and working? I'm using C#. Thank you. 回答1: You could try using System.Net.FtpWebRequest and then just check the GetResponseStream method. So something like System.Net.FtpWebRequest myFTP = new System.Net.FtpWebRequest //Add your credentials and ports try { myFTP.GetResponseStream(); //set some flags } catch ex { //handle it when it is not working } 回答2: try something like this:

问题 How to read connection string info from app.config file using .net api? Platform is .net 3.5 <?xml version="1.0" encoding="utf-8" ?> <configuration> <connectionStrings> <add connectionString="" providerName="" name=""/> </connectionStrings> </configuration> 回答1: Please see Reading Connection Strings in Web.Config and App.Config and Enterprise Library DAAB Settings (on the Wayback Machine as the original got deleted) ConnectionStringSettings connection = ConfigurationManager.ConnectionStrings[

问题 I would like know which applications on my android connect to what IP addresses. In essence I would like to know what these apps do in the background without my approval. I tried a netstat OS call in my monitoring app, which already gives me the open connections and the connected IP addresses, but there is no process name, pid or uid that would allow me to map a connection to a particular app. 'netstat -p' seems not to provide the process info. 回答1: If you read source code for 'netstat', it

问题 I have a very simple test script: <?php $DSN = "mysql:host=db.example.edu;port=3306;dbname=search_data"; try { $DB = new PDO($DSN, "username", "super-secret-password!"); } catch (PDOException $e) { header('Content-Type: text/plain'); print "Could not connect to database, rawr. :-("; exit; } $SQL = "SELECT phrase FROM search ORDER BY RAND() LIMIT 10"; foreach($DB->query($SQL) as $row){ print $row['phrase']."\n"; } ?> When I execute this script from the command line, it works perfectly: $ php

问题 I met a problem, the value of max_connction in MySQL is 214 after I set it 1000 via edit the my.cnf, just like below: hadoop@node1:~$ mysql -V mysql Ver 14.14 Distrib 5.7.15, for Linux (x86_64) using EditLine wrapper MySQL version: 5.7 OS version : ubuntu 16.04LTS mysql> show variables like 'max_connections'; +-----------------+-------+ | Variable_name | Value | +-----------------+-------+ | max_connections | 151 | +-----------------+-------+ 1 row in set (0.00 sec) As we can see, the

问题 I have read a lot of questions regarding this subject on this website however they didn't quiet answer my question. If you can't be ### about my goal or background skip to the question. My Goal Is to build a server that can run on Mac OS X 10.4+ and later, port it to Windows XP/Vista (no idea how to do that yet, but that's a problem for later). Then let the iPhone be the client that is able to see the computer names that are running the server (through WiFi). The user of the iPhone can then

问题 I'm trying to learn Socket by myself. I'm little bit confused by following text from Oracle website. I have some questions regarding that. Thanks in advance for any clear explanation. setSoTimeout public void setSoTimeout(int timeout) throws SocketException Enable/disable SO_TIMEOUT with the specified timeout, in milliseconds. With this option set to a non-zero timeout, a read() call on the InputStream associated with this Socket will block for only this amount of time. If the timeout expires

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . I have the PAServer running on my MacBook without password. From my Windows/Delphi I then try setup the connection. I enter IP address and empty password. However, when testing the connection, I get error:

问题 I was looking to find a method to connect two phones using bluetooth without having to first pair them. I am trying to omit the annoying bluetooth pop up request. There is an app on the google store that does this called Bluehood. I wanted to use that style of connection for an app I am building in a totally different niche. You can search for the app on the google store called "Bluehood Social Bluetooth". https://play.google.com/store/apps/details?id=com.mobile.bluehood 回答1: You may create

问题 Hi I am using Apache HTTP Client 4.0 to upload some files on a server based on HTTPS protocol. The uploaded application is running 24x7. Today suddenly it started to throw this exception- java.net.SocketException: No buffer space available (maximum connections reached?): connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown