As a component of message oriented middleware ismq , message transfer agent ( mta ) , which implements reliable message transfer service , delivers messages among ismq servers . based on the study of failure models , we introduced a reliable message transfer protocol in mta 消息傳輸代理mta是消息中間件ismq中的一個(gè)子系統(tǒng),該子系統(tǒng)完成消息在服務(wù)器和服務(wù)器之間轉(zhuǎn)發(fā)的功能,是分布式系統(tǒng)結(jié)點(diǎn)間可靠消息傳輸?shù)膶?shí)現(xiàn)。
The research promotes a new mta ( message transfer agent ) system frame . according to function this frame divides mta into two services : message service and reliable transfer service . the first service takes charge of the communication with the ua ( user agent ) , the second one transfers the messages to the remote service 2 .研究提出了一種新的mta ( messagetransferagent ,報(bào)文傳輸代理)系統(tǒng)框架,該框架將mta按功能分為兩部分,即報(bào)文服務(wù)和可靠傳輸服務(wù),前者負(fù)責(zé)與ua的交互,后者負(fù)責(zé)消息的遠(yuǎn)程發(fā)送; 3 .研究并設(shè)計(jì)了一個(gè)多級可靠報(bào)文傳輸協(xié)議,該協(xié)議能滿足不同應(yīng)用對于報(bào)文傳輸可靠性的需求,并使得用戶在發(fā)送報(bào)文的過程中能夠?qū)?bào)文的發(fā)送狀態(tài)進(jìn)行監(jiān)控。