connection

问题 I have a live video chat application and I use a TURN server which supports STUN/TURN and both UPD/TCP transmission. Sometimes users can be connected to the network which blocks that much ports and protocols that WebRTC connection just cannot happen (usually those are corporate networks). I would like to check if a WebRTC connection is possible before users try to connect to each other (actually, perform a technical check ). How can I do it? Ideas I have in my head: Try to download a hosted

问题 I made a python program here and i wanted to send the code to my friend and he was unable to add values through the program to my database, is there a way i can allow his access. Code: from tkinter import * import mysql.connector as mysql root = Tk() def flush(*args): name = nme.get() phone = ph.get() emirate = e_id.get() con = mysql.connect(host='127.0.0.1', user='root', password='monkey123', database='NZ') c = con.cursor() c.execute("Insert into gliy VALUES ('"+name+"','"+str(phone)+"','"

问题 have a simple Spring-Cloud-Stream project that I try to connect with RabbitMQ, It says its connected but It's not working. Did I do something wrong in the code? Application.properties spring.rabbitmq.host=localhost spring.rabbitmq.port=5672 spring.rabbitmq.username=guest spring.rabbitmq.password=guest spring.cloud.stream.bindings.greetingChannel.destination = greetings server.port=8080 HelloBinding interface package com.gateway.cloudstreamproducerrabbitmq; import org.springframework.cloud

问题 I am using Python script to insert records into MySQL database table. The script fails with the following error message. MySQL version is 8.0.17 , Python version 3.6.5 (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query ([WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond)') (Background on this error at: http:/

问题 I am using Python script to insert records into MySQL database table. The script fails with the following error message. MySQL version is 8.0.17 , Python version 3.6.5 (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query ([WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond)') (Background on this error at: http:/

问题 One parent launch two process A, B with python multiprocessing that should run in parallel. Share two lists with Multiprocessing.Manager list_1 list_2 A write to list_1 that is passed as parameter to A, inside A list_1 became list_W. A read from a list_2 that is passed as parameter to A, inside A list_2 became list_R B write to list_2 that is passed as parameter to B, inside B list_2 became list_W. B read from a list_1 that is passed as parameter to B, inside B list_1 became list_R if I call

问题 One parent launch two process A, B with python multiprocessing that should run in parallel. Share two lists with Multiprocessing.Manager list_1 list_2 A write to list_1 that is passed as parameter to A, inside A list_1 became list_W. A read from a list_2 that is passed as parameter to A, inside A list_2 became list_R B write to list_2 that is passed as parameter to B, inside B list_2 became list_W. B read from a list_1 that is passed as parameter to B, inside B list_1 became list_R if I call

问题 So we have SQL Server 2008 R2 Express running on a local server, and a bunch of machines on the same LAN use a program I wrote in C# to access said server. All the machines in the building except one can connect quite happily. Connection string is: Data Source=[IP address here],53535\SQLEXPRESS;Initial Catalog=EMS_Main;;User ID=EMSUser;Password=[password here]; Exact error message is: "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The

问题 So, I'm trying to send POST requests to an IP adress, but I've found a problem way before that. To check if there's a working connection to the internet I have the following method called when creating the Activity: public void checkInternectConnection() { AsyncTask.execute(() -> { try { InetAddress inAddress = InetAddress.getByName("https://google.com"); if (inAddress.equals("")) { networkAvilable = true; } else { networkAvilable = false; } } catch (Exception e) { e.printStackTrace();

问题 I have an apple account with the admin role. Whenever I'm trying to add an apple account to visual studio, it displays "There was an error while trying to log in: A server with the specified hostname could not be found". I updated Visual Studio 2017 also. Still, it displays the same error. Please help me. 回答1: As @LeonLu mentioned, it might be a problem with the non-paid version of account. This is stated in the Microsoft docs: https://docs.microsoft.com/en-us/xamarin/cross-platform/macios