socket.core | socket framework based on C # net standard2 | TCP library
kandi X-RAY | socket.core Summary
kandi X-RAY | socket.core Summary
socket.core === this is a socket framework based on c # net standard2.0 write, can be used for .net framework / dotnet core assembly, can run in window (iocp) / linux (epoll) .use asynchronous connection, asynchronous send, asynchronous receive, performance burst tables, and pass the stress test. .net framework4.0 version ---. install nuget: package manager: install-package socket.core .net cli: dotnet add package socket.core paket cli: paket add socket.core one: tcp module introduction server socket.core.server namespace, respectively, three modes push / pull / pack under the socket.core. client namespace of the client, there are three modes of push / pull / pack. the main process and the corresponding methods and events introduced. note: connectid (guid) represents a connection object, data (byte []), success (bool) * 1. initialize socket (corresponding to the three modes) >instantiate the server class tcppushserver / tcppullserver / tcppackserver >instantiate the client class tcppushclient / tcppullclient / tcppackclient >parameter introduction int numconnections maximum number of simultaneous connections, int receivebuffersize buffer size (sink) for each socket i / o operation, int overtime timeout period in seconds (check every 10 seconds), when the value is 0, do not set the timeout, uint headerflag header tag range 0 ~ 1023 (0x3ff), when the header identifier is equal to 0, do not check the header *
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QUESTION
I play with RSocket together with Spring boot. I want to make simple request-response example. As example I took code from this link:
https://www.baeldung.com/spring-boot-rsocket#request-response
Source code:
When I run example code without change I get error during request with Exception. This error is not point of this question, but I just want to show changes comapre to original source by baeldung.
[reactor-tcp-nio-1] org.springframework.core.log.CompositeLog: [5927a44d-9] 500 Server Error for HTTP GET "/current/pko" io.rsocket.exceptions.ApplicationErrorException: No handler for destination '' at io.rsocket.exceptions.Exceptions.from(Exceptions.java:76) Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: Error has been observed at the following site(s): |_ checkpoint ⇢ Handler com.baeldung.spring.rsocket.client.MarketDataRestController#current(String) [DispatcherHandler] |_ checkpoint ⇢ HTTP GET "/current/pko" [ExceptionHandlingWebHandler] Stack trace: at io.rsocket.exceptions.Exceptions.from(Exceptions.java:76) at io.rsocket.core.RSocketRequester.handleFrame(RSocketRequester.java:706) at io.rsocket.core.RSocketRequester.handleIncomingFrames(RSocketRequester.java:640) at reactor.core.publisher.LambdaSubscriber.onNext(LambdaSubscriber.java:160) at reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onNext(MonoFlatMapMany.java:242) at reactor.core.publisher.FluxGroupBy$UnicastGroupedFlux.drainRegular(FluxGroupBy.java:554) at reactor.core.publisher.FluxGroupBy$UnicastGroupedFlux.drain(FluxGroupBy.java:630) at reactor.core.publisher.FluxGroupBy$UnicastGroupedFlux.onNext(FluxGroupBy.java:670) at reactor.core.publisher.FluxGroupBy$GroupByMain.onNext(FluxGroupBy.java:205) at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:112) at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:213) at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:213) at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:260) at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:366) at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:358) at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:96) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.base/java.lang.Thread.run(Thread.java:834)
So I change client code from
...ANSWER
Answered 2021-Sep-01 at 16:38In Reactor, by default, everything is running on the main thread. Calling Thread.sleep
the main thread is blocking and the application freezes. if you would like to simulate a long-running operation you could use the delayElements operator:
QUESTION
I get the ApplicationErrorException: No handler for destination '' trying to connet to my web server (spring boot) from android code using RSocket. As a transport I use websockets.
On the server side I use:
...ANSWER
Answered 2021-Aug-20 at 10:03The issue was in metadata setting.
Following sample on the rsocket-kotlin I set metadata type to metadata = "application/json"
, though to use routes I needed it to be metadata = "message/x.rsocket.composite-metadata.v0"
.
Big thanks to @haal for their detailed answer!
Now the code to connect from Android is the following:
QUESTION
My environment is Lua-5.4.2 Luasocket-3.0-rc1. When I run lua script directly, it work success. When i run it through c language, it tell me error.
Error Msg is : PANIC: unprotected error in call to Lua API (error running script: error loading module 'socket.core' from file '/usr/local/lib/lua/5.4/socket/core.so': undefined symbol: lua_gettop) Aborted(core dumped)
Does anyone know why?
lua script code is:(test.lua)
...ANSWER
Answered 2021-Jun-27 at 04:16tl;dr: Pass -Wl,-E
to GCC.
I was able to reproduce your problem with this Dockerfile:
QUESTION
I want to have an RSocket channel endpoint in my Spring Boot application in which I can handle the cancellation of the inbound, client-driven stream to do some server side cleanup.
SetupRelevant dependencies:
- Spring Boot 2.4.2
- Kotlin 1.4.21
- Kotlinx Coroutines 1.4.2
- RSocket Core 1.1.0
I have tried to achieve my goal with both Kotlin coroutine Flows and Reactor Flux(en?). Both client/server pairs below should do the same thing: establish an RSocket channel, send 2 "ping" payloads from the client, the server responds to each with a "pong" payload, and the client closes the connection.
Flow server side:
...ANSWER
Answered 2021-Feb-08 at 21:22Bug filed, marking this question as answered. Thanks to everyone for the quick responses.
QUESTION
I want to create a rsocket channel where the data sent from the server can be either a reaction to a client request or a push. I use a flux merge for that.
It's referential data : the refresh can be asked by the client and the server can also push updates.
So I have this on the server side :
...ANSWER
Answered 2020-Jul-06 at 16:11The problem disapears when upgrading from spring-boot 2.3.0.RELEASE to 2.3.1.RELEASE.
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