out-of-band | 易学教程

Is urgent tcp data acknowledged?

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问题 In a tcp segment with the URG flag up there might be normal data as well. How does the receiving host handles the urgent packet? How does it acknowledge the urgent data if it is not part of the data stream? Does it acknowledge the rest of it? I understand that it is not usually used, but if both hosts support the same RFC about the URG flag, how do they handle out-of-band data? If the urgent data is an abort message, the receiver will drop all other data, but the sender will still want an

Java sockets with out of band data

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问题 Does anybody know how to receive (how to know that you received) out-of-band data with Java sockets? In particular I've read the documentation for sendUrgentData and setOOBInline which states that: Note, only limited support is provided for handling incoming urgent data. In particular, no notification of incoming urgent data is provided and there is no capability to distinguish between normal data and urgent data unless provided by a higher level protocol. But I'm still hoping that somebody

Java sockets with out of band data

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Does anybody know how to receive (how to know that you received) out-of-band data with Java sockets? In particular I've read the documentation for sendUrgentData and setOOBInline which states that: Note, only limited support is provided for handling incoming urgent data. In particular, no notification of incoming urgent data is provided and there is no capability to distinguish between normal data and urgent data unless provided by a higher level protocol. But I'm still hoping that somebody has a solution :-) More details: I'm sending serialized objects trough the socket and I'm not really

“Out of Band” Processing Techiniques for asp.net applications

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Jeff has previously blogged about using the cache to perform "out of band" processing on his websites, however I was wondering what other techniques people are using to process these sorts of tasks? Years ago, I saw Rob Howard describe a way to use an HttpModule to process tasks in the background. It doesn't seem as slick as using the Cache, but it might be better for certain circumstances. This blog post has the details, and there are many others that capture the same information if you look around. Windows Service You may want to look at how DotNetNuke does it. I know it is written in VB.NET

“Out of Band” Processing Techiniques for asp.net applications

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问题 Jeff has previously blogged about using the cache to perform "out of band" processing on his websites, however I was wondering what other techniques people are using to process these sorts of tasks? 回答1: Years ago, I saw Rob Howard describe a way to use an HttpModule to process tasks in the background. It doesn't seem as slick as using the Cache, but it might be better for certain circumstances. This blog post has the details, and there are many others that capture the same information if you

socket programming: How do I handle out of band data

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I just looked into wikipedia's entry on out-of-band data and as far as I understand, OOB data is somehow flagged more important and treated as ordinary data, but transmitted in a seperate stream, which profoundly confuses me. The actual question would be (besides "Could someone explain what OOB data is?"): I'm writing a unix application that uses sockets and need to make use of select() and was wondering what to do with the exceptfds parameter? Do I need to put all my sockets into this parameter and react to such events? Or do I just ignore them? I know you've decided you don't need to handle

socket programming: How do I handle out of band data

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问题 I just looked into wikipedia's entry on out-of-band data and as far as I understand, OOB data is somehow flagged more important and treated as ordinary data, but transmitted in a seperate stream, which profoundly confuses me. The actual question would be (besides "Could someone explain what OOB data is?"): I'm writing a unix application that uses sockets and need to make use of select() and was wondering what to do with the exceptfds parameter? Do I need to put all my sockets into this