arm-linux環(huán)境下udp協(xié)議的通信應用研究.doc
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arm-linux環(huán)境下udp協(xié)議的通信應用研究,摘要：進行udp協(xié)議通信時，發(fā)送端和接收端的狀態(tài)是相對獨立的，發(fā)送端不與接收端建立連接，而是不停向接收端發(fā)送，為了確保不丟失報文，上位機采取了按固定次數(shù)重發(fā)相同內(nèi)容報文的機制。這種機制雖然可以有效確保報文不丟失，但大量冗余數(shù)據(jù)報被發(fā)送，網(wǎng)絡資源利用率不高。顯然重發(fā)次數(shù)越多，冗余數(shù)據(jù)報越多，效率越低。要想有效保證數(shù)據(jù)報準...
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摘要：進行UDP協(xié)議通信時，發(fā)送端和接收端的狀態(tài)是相對獨立的，發(fā)送端不與接收端建立連接，而是不停向接收端發(fā)送，為了確保不丟失報文，上位機采取了按固定次數(shù)重發(fā)相同內(nèi)容報文的機制。這種機制雖然可以有效確保報文不丟失，但大量冗余數(shù)據(jù)報被發(fā)送，網(wǎng)絡資源利用率不高。顯然重發(fā)次數(shù)越多，冗余數(shù)據(jù)報越多，效率越低。要想有效保證數(shù)據(jù)報準確發(fā)送的同時又不產(chǎn)生過多冗余數(shù)據(jù)報，那么重復發(fā)送的次數(shù)的確定就成為問題的關鍵。以下給出一種確定上位機重發(fā)次數(shù)的方法。
關鍵詞：ARM；Linux；交叉編譯環(huán)境；UDP協(xié)議；重發(fā)機制；重發(fā)次數(shù)
中圖分類號：TP393文獻標識碼：A文章編號：1009-3044(2011)13-3001-03
The Application Research of Communicating Based on ARM-Linux Environment and UDP-Protocol
CUI Hao, SHAO Ping-fan
(Wuhan University of Science and Technology, Wuhan 430000, China)
Abstract: The sender and recEiver are relatively independent when communicating under UDP- protocol, the sender resending messages to recEIver times instead of creating a connection. A resend-mechanism that the key-messages were send by upper computer in fixed times, was used in order to ensuring not to lost key-message. Although the resend-mechanism can ensure that the key-message wouldn’t be lose anyway, but abundant of redundancy messages
關鍵詞：ARM；Linux；交叉編譯環(huán)境；UDP協(xié)議；重發(fā)機制；重發(fā)次數(shù)
中圖分類號：TP393文獻標識碼：A文章編號：1009-3044(2011)13-3001-03
The Application Research of Communicating Based on ARM-Linux Environment and UDP-Protocol
CUI Hao, SHAO Ping-fan
(Wuhan University of Science and Technology, Wuhan 430000, China)
Abstract: The sender and recEiver are relatively independent when communicating under UDP- protocol, the sender resending messages to recEIver times instead of creating a connection. A resend-mechanism that the key-messages were send by upper computer in fixed times, was used in order to ensuring not to lost key-message. Although the resend-mechanism can ensure that the key-message wouldn’t be lose anyway, but abundant of redundancy messages
