streaming

How to write super-fast file-streaming code in C#?

自古美人都是妖i 提交于 2019-12-27 18:21:49
问题 I have to split a huge file into many smaller files. Each of the destination files is defined by an offset and length as the number of bytes. I'm using the following code: private void copy(string srcFile, string dstFile, int offset, int length) { BinaryReader reader = new BinaryReader(File.OpenRead(srcFile)); reader.BaseStream.Seek(offset, SeekOrigin.Begin); byte[] buffer = reader.ReadBytes(length); BinaryWriter writer = new BinaryWriter(File.OpenWrite(dstFile)); writer.Write(buffer); }

Kafka streams word count application

生来就可爱ヽ(ⅴ<●) 提交于 2019-12-25 12:25:13
问题 I'm playing around with the kafka streaming API (Kakfa version: 0.10.2.0) trying to make a simple wordcount example work: Wordcount App gist. I'm running both producer and console consumer: ./kafka-console-producer.sh -topic input-topic --broker-list localhost:9092 ./kafka-console-consumer.sh --topic output-topic --bootstrap-server localhost:9092 --from-beginning start the application and everything seems to be working fine but when I type in some strings within the console producer, the

Error in sinking kafka stream in flink 1.2

情到浓时终转凉″ 提交于 2019-12-25 08:56:42
问题 What I did was to read in a message from kafka in json format. E.g. {"a":1,"b":2} Then I applied a filter to this message to make sure the value corresponding to a is 1, the value of b is 2. Finally, I want to output the result stream to a downstream kafka. However, I don't know why the compiler says type mismatch. My code is as follows: val kafkaConsumer = new FlinkKafkaConsumer010( params.getRequired("input-topic"), new JSONDeserializationSchema(), params.getProperties) val messageStream =

How to loadtest server sent events

心不动则不痛 提交于 2019-12-25 08:47:52
问题 I have a node service that streams data via SSE (https://www.npmjs.com/package/sse-channel). I would like to loadtest this service my making 'n' concurrent connections, i tried the "loadtest" npm module but since we are dealing with streaming responses i was not able to report back any data like requests per second, mean latency etc… when the streaming requests are made, is there a way to use "loadtest" module for streaming services if not can someone point me to the module that would report

Streaming video & audio in Windows Phone 7

最后都变了- 提交于 2019-12-25 08:28:36
问题 I have an ASX stream that I would like to play on my Windows Phone 7. It appears that WP7 cannot handle client-side playlists, like an ASX file. So what do I do now? When I break into the ASX file, I see it's actually a mms:// stream with no file extension, so I can't even point to the raw file. How do I proceed from here? Is there a better option than the MediaElement control that will handle ASX files? More Info: My stream in question is audio/video, with WMA2/WVC1 encoding, respectively,

IOException on streamed file upload via WCF over HTTP

时光总嘲笑我的痴心妄想 提交于 2019-12-25 07:28:13
问题 I'm building a WCF service hosted that allows the client to upload files over HTTP. The service reads the client's Stream chunk by chunk. This works well for a small file, where only a single iteration is needed. But when uploading larger files after some chunks I get an IOException saying An exception has been thrown when reading the stream. on Stream.EndRead() . The inner exception is The I/O operation has been aborted because of either a thread exit or an application request. The amount of

Ajax - “Access-Control-Allow-Origin” Error

我的梦境 提交于 2019-12-25 07:00:57
问题 I'm trying to work with the Livestream API to see if a certain channel is live but keep getting this error: XMLHttpRequest cannot load http://channel.api.livestream.com/1.0/livestatus?channel=huskystarcraft. Origin http://www.webdevstl.com is not allowed by Access-Control-Allow-Origin. Do I need to run it through PHP or am I doing something wrong in my ajax call? It's pretty straight forward code: function getActive(){ if(window.XMLHttpRequest) { xmlhttp = new XMLHttpRequest(); } else {

Need help about Search and Streaming Api of Twitter

≯℡__Kan透↙ 提交于 2019-12-25 06:46:44
问题 I'm a newbie in C# and asp.net. I'm trying to create a simple web(run on localhost) which use streaming and search API of Twitter. I've tried some query like: "https://api.twitter.com/1.1/statuses/mentions_timeline.json?count=2&since_id=14927799" but it got some error about "Bad Authentication data". May be I don't know how to get Authentication. So could anyone help me? THanks a lots. 回答1: What you have shown is not the search functionality, rather is the stream functionality. Here is a

How to get video thumbnail if i have the rtsp link of the video?

こ雲淡風輕ζ 提交于 2019-12-25 06:13:06
问题 i am developing an android app for my ip camera, and the camera has some specific api commands that it can respond to. the problem i am stuck on is that i want to display a list of videos available on the memory card of the camera. I am getting the file list but i also want to get the thumbnails of those files. The problem in getting the thumbnail is that i don't have any direct IP address of the video, the camera only provides me two things for accessing the video 1. RTSP URL of the video 2.

GoPro 3 streaming links missing in live directory

邮差的信 提交于 2019-12-25 06:10:32
问题 So by following different instructions online, I connected laptop to GoPro 3 silver using wifi. I browsed to the URL http://10.5.5.9:8080/live/ and this is where I am supposed to see options where I could copy the URL for media streaming. But this image shows that live folder is coming up empty. I am expecting to find something like : http://10.5.5.9:8080/live/amba.m3u8 Note- The GoPro is in "GOPRO APP" mode Thoughts? 回答1: Seems like there is some issue with gopro. Once I connected the GoPro3