tcp ip illustrated volume 2

Chapter Review:"TCP/IP Detailed Volume 1: Agreement" 1th Chapter Overview-Reading Notes"TCP/IP Detailed Volume 1: Protocol" chapter 2nd link layer-Reading notes"TCP/

at the same time, both of which have the same state transition diagram.8. Record time stampsThe timestamp options that are received by the Tcp_input processing are given below.If the received message segment has a timestamp, the timestamp value is saved in the variable.9.RST processingThe switch statement that handles the RST flag is given below, depending on the current connection state.1.SYN_RCVD state, the socket error code is set to econnrefused, close the socket.

the address of the remote host itself, the destination address is the IP address of the mobile host, in short, it is considered that the mobile host in the attribution network. In essence, it's the attribution agent. Using ARP proxy technology to use the attribution physical address to receive the data frame grouping on the link layer and then forward the packet to the field network where the mobile host resides.B. When sending information from a mob

state when the fin is processed, it means that both ends of the connection are closed simultaneously---the two fin sent at both ends is interleaved across the network. The connection enters the closing state. 4.fin_wait_2 status. Receiving fin will bring the connection into the TIME_WAIT state. When the Fin_wait_1 state receives a segment with an ACK and fin, although the connection is transferred directly from Fin_wait_1 to the TIME_WAIT state, the connection actually enters the fin_wait_2 sta

和ip结构之间的关系。 图中含有大量的信息： 1.全部结构都放在一个mbuf的数据区内。 2.ipq链表由next和prev连接起来的ipq结构组成。每一个ipq结构保存了唯一标识一个IP数据报的四个字段。 3.当作为分片链表的头訪问时，每一个ipq结构被看成是一个ipasfrag结构。这些分片由ipf_next和ipf_prev链接起来，分别 覆盖了ipq结构的ipq_next和ipq_prev成员。 4.每一个ipasfrag结构都覆盖了到达分片的ip结构，与分片一起到达的数据在缓存中跟在该结构之后。 从逻辑的观点说明重装结构，该图显示了三个数据报的重装，以及ipq链表和ipasfrag结构之间的关系，阴影部分为缺少 的分片。

currently defined. The first two options are single-byte options, and the others are multi-byte options. The 1st column shows the net/3 option constant. The 2nd column and the 3rd column are the decimal and binary values of this type, and the 4th column is the length of the option. The net/3 column displays the options implemented by ip_dooptions in net3. The IP address must automatically ignore all options that it does not recognize. Among them, sec

One day, when I was restricted by many secular rules and could not do what many normal people could do, I suddenly felt: people should not have come to this world! Since we fell into the ground, we have been destined to suffer a lot in our life... There is always no proper balance between breaking rules and conforming rules. I will still choose to stick to the rules when I think that fox, the female killer in the movie "Assassin's League" (also known as the wanted order), will eventually end the

The TCP/IP detailed Volume 2 describes the TCP/IP stack source code for 4.4bsd-lite (a release of the BSD operating system released in 1994), which is followed by a number of implementations of the network protocol Stacks for UNIX

publishes the PRU_CONNECT2 request.8. For UDP sockets, there are two scenarios in which Pru_disconnect requests are generated:A. When a UDP socket on a connection is closed, Pru_disconnect is called before Pru_detach.10. Call cannot write function, publish Pru_send request, final call Udp_output send the datagram.12.PRU_SOCKADDR and PRU_PEERADDR request allocations from system calls GetSockName and Getpeername.9.udp_sysctl functionThe SYSCTL function of UDP only supports one option, UDP check a

is the same as the IP header check.The Federated Icmp_hun (First Union) and Icmp_dun (data Federation) access multiple ICMP messages according to Icmp_type and Icmp_code. Each ICMP message is usedIcmphun; only a subset of the messages use Icmp_dun. Fields that are not used must be set to 0.The ICMP packets are encapsulated in the IP datagram.PROTOSW Structure of 2