channel

Convert chan to non chan in golang

由 蓝咒 提交于 2019-12-07 07:51:14
问题 Is it possible to let function funcWithNonChanResult have the following interface: func funcWithNonChanResult() int { And if I want it to use function funcWithChanResult with the interface: func funcWithChanResult() chan int { In other words, can I somehow convert chan int to int ? Or I must have chan int result type in all the functions which use funcWithChanResult ? Currently, I tried these methods: result = funcWithChanResult() // cannot use funcWithChanResult() (type chan int) as type int

How to change notification sound dynamically in Android O

由 霸气de小男生 提交于 2019-12-07 05:11:08
问题 Recently I use notification channel to support android O. But the problem is I cannot change the sound Uri dynamically. Our app have notification sound setting which user can change app notification sound as they want. But as you know, Android now do not allow developer to update notification channel before user reinstall app. There I consider several possible solutions which is not looks good. User ringtone manager to play ringtone instead of setSound. But when user disable notification in

How to terminate subscription to an actioncable channel from server?

由 做~自己de王妃 提交于 2019-12-07 03:44:55
问题 Is there a way to terminate the subscription to a particular channel for any particular consumer from the server side (controller) so that disconnected callback in my coffee script file can be invoked? 回答1: http://api.rubyonrails.org/classes/ActionCable/Channel/Base.html#class-ActionCable::Channel::Base-label-Rejecting+subscription+requests class ChatChannel < ApplicationCable::Channel def subscribed @room = Chat::Room[params[:room_number]] reject unless current_user.can_access?(@room) end

Understanding netty channel buffers and watermarks

由 女生的网名这么多〃 提交于 2019-12-06 16:00:09
问题 I am trying to understand netty buffers and watermarks. As a test case, I have a netty server which writes to a client, the client is blocked (essentially has a sleep of 10 seconds between each read) Under normal I/O TCP sender would be throttled (sending is slowed down because of flow control) if the receiver is blocked, this is not the case here. The sender seems to keep writing and flushing data on each send. Where is this data being written? Is there going to be Flow control in the netty

WCF duplex channel gets closed when using callbacks

由 ℡╲_俬逩灬. 提交于 2019-12-06 12:45:01
问题 My WCF service uses netTcpBinding, and has a callback object. I need to service multiple concurrent clients, and mantain sessions, so the service is decorated with [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Multiple] To avoid thread deadlocks, the callback class is decorated with [CallbackBehavior(UseSynchronizationContext=false)] and I use SynchronizationContext to execute the method in the UI thread. The problem is that sometimes

Channel URL Facebook

由 岁酱吖の 提交于 2019-12-06 06:33:06
I'm implementing the facebook login in my website wich is in the form of mysite.anotherdomain.org . I did all explained in the Documentation of the Javascript SDK but, since I have some problems, I'm wondering if the error comes from the channel url. What should I exactly write for the channel file? Thanks in advance! The channel file basically fixes certain cross-domain issues for certain browsers. The following are the three that Facebook has identified: Pages that include code to communicate across frames may cause Social Plugins to show up as blank without a channelUrl. if no channelUrl is

Can't POST JSON to server using Netty

由 只愿长相守 提交于 2019-12-06 06:15:57
问题 I'm stuck on a really, really basic problem: Using HttpRequest to POST a wee bit of JSON to a server using Netty. Once the channel is connected, I prepare the request like this: HttpRequest request = new DefaultHttpRequest( HttpVersion.HTTP_1_1, HttpMethod.POST, postPath); request.setHeader(HttpHeaders.Names.CONTENT_TYPE, "application/json"); String json = "{\"foo\":\"bar\"}"; ChannelBuffer buffer = ChannelBuffers.copiedBuffer(json, CharsetUtil.UTF_8); request.setContent(buffer); channel

list all elements in a buffered channel

由 若如初见. 提交于 2019-12-06 03:49:41
问题 Is there a (non destructive) way to list all the element in a buffered channel? The only thing I can think about is to cycle all of them, reinserting them at the end. This doesn't seem the smartest approach. Link to playground c := make(chan int, 100) c <- 111 c <- 222 for i:=0;i<2;i++ { element := <- c fmt.Println(element) c <- element } fmt.Println(len(c)) 回答1: This thread from 2011 offered some wrapper around a channel in order to enable a Peek() function, but that was more a workaround

Client channel is not in writable state(NIO) Netty

由 ぐ巨炮叔叔 提交于 2019-12-05 18:46:27
client channel is not in writable state in netty . Can any experts guide me to find-out the reason why the channel is always not in writable state? since it is not in writable state our threads are in sleep mode. We analyzed the state of threads using Thread dump, added a counter in the following loop and it waits for a minute and then exit from the loop. But i really want to figure-out the reason for not writable state. Is the channel is remains in ctx after the closing of channel(If the EOF is not send by the client)? If can this happends (means never in writable state)? while (!ctx

Golang: Can I cast to chan interface{}

由 大憨熊 提交于 2019-12-05 18:22:49
问题 I am trying to write a general purpose wrapper for subscriptions, something like: type Subscriber interface{ Subscribe(addr string) chan interface{} } Suppose there is a library I want to use which has a subscribe method in it, but which uses a chan library.Object . I would like to be able to do something like: func (s *mySubscriber) Subscribe(addr string) chan interface{}{ ch := make(chan library.Object) library.Subscribe(addr, ch) return chan interface{}(ch) } Currently, I don't believe
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