asyncsocket

AsyncSocket: how to define read length and get callback only when read length is reached

由 一个人想着一个人 提交于 2020-01-05 05:25:06
问题 Is it possible to do the following with AsyncSocket: while ("response packet" is not read) do { Read at least first 5 bytes from read stream, and extract "response packet" length size from that. Read further until reached reading amount of bytes defined in "response packet" header. If reached the end of read stream but some bytes are lacking then wait for another read stream and finish reading the "response packet" then. Copy read bytes into buffer and mark that read data as "response packet"

How to receive Multicast UDP?

由 烈酒焚心 提交于 2020-01-01 18:45:11
问题 I'm using GCDAsyncUdpSocket and i can send either Multicast or normal UDP packets. I'm receiving normal packets with no problem but I cant receive Multicast packets from another iOS device. To receive I use: - (void)udpSocket:(GCDAsyncUdpSocket *)sock didReceiveData:(NSData *)data fromAddress: (NSData *)address withFilterContext:(id)filterContext { NSString *msg = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease]; NSString *host = nil; uint16_t port = 0;

How to receive Multicast UDP?

由 一笑奈何 提交于 2020-01-01 18:44:08
问题 I'm using GCDAsyncUdpSocket and i can send either Multicast or normal UDP packets. I'm receiving normal packets with no problem but I cant receive Multicast packets from another iOS device. To receive I use: - (void)udpSocket:(GCDAsyncUdpSocket *)sock didReceiveData:(NSData *)data fromAddress: (NSData *)address withFilterContext:(id)filterContext { NSString *msg = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease]; NSString *host = nil; uint16_t port = 0;

is there any pool for ThreadingMixIn and ForkingMixIn for SocketServer?

由 心不动则不痛 提交于 2020-01-01 09:42:21
问题 I was trying to make an http proxy using BaseHttpServer which is based on SocketServer which got 2 asynchronous Mixins (ThreadingMixIn and ForkingMixIn) the problem with those two that they work on each request (allocate a new thread or fork a new subprocess for each request) is there a Mixin that utilize a pool of let's say 4 subprocesses and 40 threads in each so requests get handled by those already created threads ? because this would be a big performance gain and I guess it would save

is there any pool for ThreadingMixIn and ForkingMixIn for SocketServer?

由 僤鯓⒐⒋嵵緔 提交于 2020-01-01 09:42:08
问题 I was trying to make an http proxy using BaseHttpServer which is based on SocketServer which got 2 asynchronous Mixins (ThreadingMixIn and ForkingMixIn) the problem with those two that they work on each request (allocate a new thread or fork a new subprocess for each request) is there a Mixin that utilize a pool of let's say 4 subprocesses and 40 threads in each so requests get handled by those already created threads ? because this would be a big performance gain and I guess it would save

关于这几天使用IOS的ASYNCSOCKET完成无限后台的过程

由 北城以北 提交于 2019-12-25 16:17:22
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 　　这几天用了下ASyncSocket完成前后台即时通讯，当时有想过用消息推送的技术实现的，可是后来想到消息推送的不可靠性还是算了。于是使用了tcp/ip实现后台主动发送数据给前台的功能。 最开始设计后台的时候，我有考虑到数据量比较大的问题，所以数据大的时候我会使用分包和组包的功能去实现。TCP/IP在传输数据的时候，一般不会大于1500字节，所以我每512字节分了 一个包。然后当一次性数据包接收太多的时候，就出现了粘包的问题。因为我在数据传输的时候使用的是json，每一个分包都是由{}括起来的，所以我就想着在包头上加上一段基本不会重复 的分割字符串，然后服务器接收到分包的时候每次都根据这个字符串分割一下，第一次分割的时候第一行绝对是空字符串 例如：@Hinagiku{“Name”=“桂雏菊”}， 我分割出来结果是： “”，“桂雏菊”，所以说第一行我就可以直接跳过，每次取分包的时候从第二行开始取。然后后台根据包的ID号，序号进行组包。如果当前分包在5分钟内没有接收完毕，就代表当前分包接收失败 了，要求客户端或服务器重新发送。粘包问题解决完毕之后，我开始实现心跳包功能，当时想的是，每隔1分钟发一次心跳包，服务器放一个线程。每隔几秒钟判断一次，当前的所有TCP连接的 最后一次访问时间是多少号

Send binary data and read the values of that using async socket programming

由 喜欢而已 提交于 2019-12-25 03:58:34
问题 I am trying to send data to a server from my client .the client sends messages to a server ,every message is 36 bytes and in this message every 4 byte is a field and in server part i should be able to detect that field from the message that client sends .Suppose i have this data : A=21 B=32 c=43 D=55 E=75 F=73 G=12 H=14 M=12 In the client i should send this values as a single message .as you can see my message has 9 field and every field is 4 byte integer and all message is 36 byte . So in

Data from Android Mobile to Java Application through Socket

由 南笙酒味 提交于 2019-12-25 02:06:29
问题 I want to transfer data from Android device to the java desktop server. I have a text and button. As I press the button on the device, the text should be displayed on the java desktop server. I also have added AsyncTask in the client. The error code has also been added. The port i have used is 4444 and the ip address I used is of my local host address. I am doing a very silly mistake. Can you please guide me. I run the server code, it first gives me : Server started. Listening to the port

asyncio project. What am I missing?

由 ℡╲_俬逩灬. 提交于 2019-12-25 01:59:00
问题 I've been working on a client for this chat server but I am running into a bit of a challenge. The server uses Python's 3.4RC1 asyncio module. Behavior: My client connects. My second client connects. Either can send messages to the server BUT, the server is not broadcasting them as it should in a normal public chat room. User1: Hello. Presses Enter. User2 does not see it. User2: Anyone there? Presses Enter. User2 sees User1: Hello. and User2: Anyone there? Just... strange. Not sure what I'm

How to set a timeout value on StreamSocket's ConnectAsync()?

由 时间秒杀一切 提交于 2019-12-23 18:23:08
问题 In the Windows Phone 8.1 app I had to create my socket as follows. How can I change it so that it will timeout after a period that I can specify? _socket = new StreamSocket(); await _socket.ConnectAsync(hostName, port.ToString(), SocketProtectionLevel.PlainSocket); await _socket.InputStream.ReadAsync(frameLenData, frameLenData.Capacity, Windows.Storage.Streams.InputStreamOptions.None); In my pre- Windows Phone code I'd create the Socket and set the timeout by testing _event.WaitOne(timeout) ,
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