原创 tcp-ip Addresses
Every interface on an internet must have a unique Internet address (also called an IP address). These addresses are 32-
2020-07-03 09:19:49
原创 tcp-ip Encapsulation
Each layer adds information to the data by prepending headers (and sometimes adding trailer information) to the data th
2020-07-03 09:19:38
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原创 網絡模塊初始化-net( 網絡名字空間 )
[ include/net/net_namespace.h ] We want to make it look to user space like the kernel implements multiple network stac
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原创 tcp-ip Introduction
Networking protocols are normally developed in layers, with each layer responsible for a different facet of the communi
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原创 tcp-ip IGMP: Internet Group Management Protocol
The Internet Group Management Protocol (IGMP) is used by hosts and routers that support multicasting. It lets all the s
2020-07-03 09:19:38
原创 tcp-ip Port Numbers
TCP and UDP identify applications using 16-bit port numbers. Servers are normally known by their well-known port number
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原创 tcp-ip UDP: User Datagram Protocol
The port numbers identify the sending process and the receiving process. The UDP length field is the length of the UDP
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原创 tcp-ip Ping Program
Most TCP/IP implementations support the Ping server directly in the kernel( the server is not a user process. ) As wit
2020-07-03 09:19:38
原创 tcp-ip IP( Internet Protocol )
IP provides an unreliable, connectionless datagram delivery service. By unreliable we mean there are no guarantees that
2020-02-21 17:33:19
原创 網絡模塊初始化-packet_type
當設備接收到一個包，會從類型字段得到協議類型，如：IP，802.3，ARP，IPv6等。然後根據類型，調用不同的處理函數，這類似面向對象的操作，通過下面的方式實現： 定義一個結構，用來將類型和函數對應起來 [ include/linux/
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原创 tcp-ip ICMP: Internet Control Message Protocol
ICMP is often considered part of the IP layer. It communicates error messages and other conditions that require attenti
2020-02-21 17:33:19
原创 tcp-ip Link Layer
The purpose of the link layer in the TCP/IP protocol suite is to send and receive IP datagrams for the IP module, ARP r
2020-02-21 17:33:19
原创 android studio 快捷鍵
Ctrl+E，可以顯示最近編輯的文件列表Shift+Click可以關閉文件Ctrl+[或]可以跳到大括號的開頭結尾Ctrl+Shift+Backspace可以跳轉到上次編輯的地方Ctrl+F12，可以顯示當前文件的結構Ctrl+F7可
2020-02-21 17:33:19
原创 tcp-ip MTU
There is a limit on the size of the frame for both Ethernet encapsulation and 802.3 encapsulation. This limits the numb
2020-02-21 17:33:19
原创 tcp-ip DNS
The Domain Name System, or DNS, is a distributed database that is used by TCP/IP applications to map between hostnames
2020-02-21 17:33:19