应用层网关 [
yìng yòng céng wǎng guān]
application-level gateways
- 文中介绍为了在有扰信道中提供可靠数据传输服务,通信网关在应用层使用经过改良的连续ARQ协议机制实现数据重传。
In order to provide reliable data transmission service on disturbed channels, a modified Go-Back-N ARQ protocol is used to retransmit data by a communication gateway. - 此外,作为CAN网关,由于CAN协议本身没有对应用层作出规定,在实际应用中存在各种互不兼容的应用层协议,所以CAN网关还要具有开放性和通用性。
And, as CAN gateway, CAN protocol does not prescribe application layer and there are many kind of incompatible application layer protocols, CAN gateway must be current and opening. - 这个协议可以理解为应用层和传输层中间的一层同时不提供网络层网关服务,如不传递icmp消息。
The protocol is conceptually a "shim-layer" between the application layer and the transport layer, and as such does not provide network-layer gateway services, such as forwarding of ICMP messages.