virtual circuit protocol 中文意思是什麼
virtual circuit protocol
解釋
虛擬線路協議-
Socket function mainly realizes setting up and initializing service unit socket, initializing service unit and service unit serial and so on. bind funcion primarily binds local address and port for the socket. listen function is to evaluate the max length of server ’ s listening queue. connect function and accept function set aside rate ahead, infrom user ’ s request of establishing virtual circuit to suna, cooperate with suna to establish the connection between client and server, return the result. we make use of three handshake with data protocol and virtual circuit mode, in this way, when we translate data, we can look up communication course according to virtual circuit number, at the same time, there aren ’ t source ip address and port, end ip address and port in the head of data package, the speed of translating data advances in a certain extent. send function and recv function is to send data collaborating with suna, and copy data from the receiving queue of socket to user ’ s buffer. close function cooperate
Socket （ ）函數實現創建、初始化服務元套接字，初始化服務元及服務元序列等。 bind （ ）函數為套接字綁定本地地址和埠號。 connect （ ）和accept （ ）函數主要是根據用戶要求預留帶寬，將用戶的建立虛電路請求轉達給服務元網路體系，協作服務元網路體系採用捎帶數據的三次握手協議建立虛電路，並告訴用戶處理結果，一方面，捎帶數據的三次握手協議在一定程度上可提高數據傳輸速度;另一方面，採用虛電路方式，使得數據通信可直接根據虛電路號查找相應的通信進程，而且數據包的包頭中省去了源ip地址、埠號和目的ip地址、埠號，提高了數據傳輸速率。 -
Service unit network architecture ( suna ) is a kind of network architecture based on service unit. suna is different of hiberarchy, it is concise, extensible and can be easy to be realized. this paper states the virtual circuit architecture prototype host based on suna, expatiates on collectivity design, module patition, the function which all modules provide with and the services for user about prototype host based on suna. the prototype host provides user with two kinds of data flow service, one is dependable data flow service which uses predigested slip window mechanism to guarantee the dependence and sequence of data flow, the other is undependable data flow service. to transfer data in network must pass ui, network communication protocol and physics network. ui is the bridge between the user and network communication protocol
服務元網路體系結構是一種基於服務元的網路體系結構，不同於層次結構，具有簡潔、可擴展和易實現的特點。本文論述了基於服務元網路體系結構的虛電路結構的原型主機，詳細闡述了原型主機的總體設計、模塊劃分、各個模塊實現的功能以及為用戶提供的服務。原型主機為用戶提供兩種數據流服務，一種是可靠的數據流服務，採用滑動窗口機制來保證數據流的可靠性和有序性;一種是不可靠的數據流服務。
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