前端仅仅只做转发，通过在IP层修改数据包的目的MAC或IP，使得后端服务器可以直接将应答包发给客户。
The load balance just forward the IP packets via mending the destination MAC or IP, so the real servers can send the answer packets direct to the clients.
来自此客户机的典型应答包括一个SACK选项，它指向比前面出现的数据更高的数据，但它也包含指向前一个相邻包的序列。
A typical ack from this client does contain a SACK option for data higher than has been seen before, but it also contains sequence references to the immediately prior packets as well.
这个补丁通过把已缓存的引用从一个序列号转换为指向队列中最高的包（过去已经选择性应答）的指针从而对此情况加以优化。
The patch optimizes this case by converting the cached reference from a sequence number to a pointer to the highest packet in the queue that has been SACKed in the past.
第一个可能的未来改变是对未应答的包列表进行修改，因此包列表的组织形式不再是当前的线性列表而是通过索引组织成红-黑树。
The first potential future change would modify the unacknowledged packet list so that it is organized with an index as a red-black tree instead of the current linear list.
当发送方的拥塞窗口增大时，它会在发送出一个包和收到应答之间的时间内成倍地增加传输中的包的数目。
When the congestion window on the sender is growing, it effectively doubles the number of packets in flight during the time it takes to send a packet and receive the acknowledgment back.
服务器以设置了 SYN和ACK 标志的包应答。
The server answers with a packet where both the SYN and ACK flags are set.
此时，Servlet容器一般已准备好开始处理请求，并将已设置格式的应答消息数据包发送回Web服务器。
At this point, the servlet container is presumably ready to start processing the request and sends the formatted packet of reply messages back to the Web server.
要纠正这种丢失现象，首先需要发送端知道到发送包后并没有得到应答，然后重新传送这个包。
Correcting these dropped packets requires the transmitter to first recognize that the packet was not acknowledged, and then retransmit that packet.
收到一个应答时调用。如果应答是期望的节点，将取消数据包重发。
If the ack is from the expected node, the retransmission of the packet is cancelled.
包因特网查询工具用于通过发送一个Internet控制消息协议回送请求并等待应答来测试一个特定网络目的地是否联机的一种程序。
Packet Internet Groper a program used to test whether a particular network destination is online, by sending an Internet control message protocol echo request and waiting for a response.
每月获得高品质的铅包和一个极好自动应答服务。
Get monthly high quality Lead packages and an excellent auto responder service.
每月获得高品质的铅包和一个极好自动应答服务。
Get monthly high quality Lead packages and an excellent auto responder service.
应用推荐