channel

This sounds like a very basic question, but I need a confirmation Does WebRTC use TCP or UDP as its peer-to-peer transport? How do I know ? I read that there are reliability mode and DTLS agreement, how does they affect? Is this transport the same for both Media and DataChannel? How do I switch between TCP and UDP? I ask this because I know that browsers have a limit on the number of parallel connections (I think they talk about TCP), and maybe UDP connection is not limited. It can use either. By default, preference is given to UDP, but depending on the firewall(s) in between the peers

I just read RabbitMQ's Java API docs , and found it very informative and straight-forward. The example for how to set up a simple Channel for publishing/consuming is very easy to follow and understand. But it's a very simple/basic example, and it left me with an important question: How can I set up 1+ Channels to publish/consume to and from multiple queues? Let's say I have a RabbitMQ server with 3 queues on it: logging , security_events and customer_orders . So we'd either need a single Channel to have the ability to publish/consume to all 3 queues, or more likely, have 3 separate Channels ,

I'm somewhat new to Python. I've used it in a bunch of projects, but haven't really needed to stray from its standard setup. I'm trying to install some new packages to get access to functions necessary for a university assignment. When I try to install, I get the following: (base) C:\Anaconda2\Jupyter>conda install -c python-control -c cyclus slycot control Solving environment: failed PackagesNotFoundError: The following packages are not available from current channels: - slycot - control Current channels: - https://conda.anaconda.org/python-control/win-64 - https://conda.anaconda.org/python

Is it OK to leave a Go channel open forever (never close the channel) if I never check for its state? Will it lead to memory leaks? Is the following code OK? func (requestCh chan<- Request) GetResponse(data RequestData) Response { reply := make(chan Response) requestCh <- Request{data: data, replyCh: reply} return <-reply } It's OK to leave a Go channel open forever and never close it. When the channel is no longer used, it will be garbage collected. Note that it is only necessary to close a channel if the receiver is looking for a close. Closing the channel is a control signal on the channel

I found when using select on multiple non buffered channels like select { case <- chana: case <- chanb: } Even when both channels have data, but when processing this select, the call that falls in case chana and case chanb is not balanced. package main import ( "fmt" _ "net/http/pprof" "sync" "time" ) func main() { chana := make(chan int) chanb := make(chan int) go func() { for i := 0; i < 1000; i++ { chana <- 100 * i } }() go func() { for i := 0; i < 1000; i++ { chanb <- i } }() time.Sleep(time.Microsecond * 300) acount := 0 bcount := 0 wg := sync.WaitGroup{} wg.Add(1) go func() { for {

My requirement is as follow: I have to login to Unix box using my credentials and once login, I have to do sudo to different user. Once sudo is successful, I have to invoke shell in nohup. On completion of executions, close channel and session both. I tried the first step which is connect using sudo command, but I don't know how to invoke shell script after the sudo command. In the below code I am able to execute sudo command, but after getting sudo access how can I execute a shell in nohup with user masteruser . So that required files created my shell has owner as masteruser . public class

http://play.golang.org/p/vhaKi5uVmm package main import "fmt" var battle = make(chan string) func warrior(name string, done chan struct{}) { select { case opponent := <-battle: fmt.Printf("%s beat %s\n", name, opponent) case battle <- name: // I lost :-( } done <- struct{}{} } func main() { done := make(chan struct{}) langs := []string{"Go", "C", "C++", "Java", "Perl", "Python"} for _, l := range langs { go warrior(l, done) } for _ = range langs { <-done } } [1st Question] done <- struct{}{} How and Why do we need this weird-looking struct? Is it empty struct or anonymous struct? I googled it