setsockopt

Socket options and protocol layer SOL_SOCKET(General socket options) SO_KEEPALIVEO_RESUSEADDRSO_LINGERSO_SNDBUFSO_RCVBUFSO_TYPESO_ERROR...... Allow TCP link persistence DetectionAllow reuse of local addressesAllow

With Shellcode, you can attack, but there are loopholes, real-world vulnerabilities are complex and difficult to find, so I specialize in a loophole to attack.Specifically, it is a simple TCP server that contains an obvious stack overflow

Send blockingThe socket recv send interface is blocked, which causes the server side not to respond to any requests from the client, so the socket is set to a non-blocking state in general.However, some scenarios, such as ssl_accept, need to use a

Improve Linux connection restrictions-Linux Enterprise Application-Linux server application information. For more information, see the following section. In linux, TCP connections are limited to TD_SETSIZE. The default value is 1024, which is

0x00Some time ago, a friend asked me a question about "no port is available. In the Intranet environment shown in, firewall only allows port 80 of the Web Server to establish a network connection, and port 80 on the Web Server has been occupied by

I have been busy with UDP socket communication over the past few days. After a few days, I have finally achieved some success .... If you do not understand the differences between the Intranet and the Internet, and do not know the LAN and WAN, you

What is port ing: Port ing (NAT or napt) refers not to a port in the physical sense, but to a port in the TCP/IP protocol. It is a logical port. Port ing: if a computer on the Intranet needs to access the Internet, port ing is required. Port ing is

Several Functions frequently used in socket communication and their related descriptions: 1: ssize_t write (int fd, const void * buff, size_t nbytes). The parameter description is omitted. If the function fails to return-1 and the error variable is

Name) IP-Linux IPv4 protocol implementationSynopsis (Overview) # Include # Include Tcp_socket= Socket (pf_inet, sock_stream, 0 ); Raw_socket= Socket (pf_inet, sock_raw,Protocol); Udp_socket= Socket (pf_inet, sock_dgram,Protocol);Description) Linux

Http://www.embedu.org/Column/Column208.htm Author: Zeng Hongan,Hua Qing vision embedded college lecturer. A common method in network programming is: after a socket is created, it is read and written in a blocking manner. If no data is readable,

  Recently, many people have called on everyone to ping any website. However, technically, no matter what type of Denial-of-Service attack, one condition must be met: the minimum resource is used in exchange for the largest consumption by attackers.

Document directory 3. Efficiency Test and Performance Analysis of UDP data packets transmitted by ndk Efficient design of ndk Development Kit To accelerate the network process of its high-end DSP, TI has launched the TCP/IP ndk (Network

Int fd_set_nonblock (int fd) { Int RV; Rv = fcntl (FD, f_getfl, 0 ); If (RV Printf ("fcntl error \ n "); Return-1; } Rv = fcntl (FD, f_setfl, RV | o_nonblock ); If (RV Printf ("fcntl error \ n "); Return-1; } Return 0; } Int init_server_socket ()

In Aix, network performance can be optimized in the following aspects: Network memory Adjustment Adjustment of Socket buffer Network Interface Parameter Adjustment Adjustment of the sending/receiving queue on the network adapter Name resolution.   1.

Replace wsock32.dll // Wsock32.cpp: defines the entry point for the DLL application.//:::::::::::::::::::::::::::::::::::::: :::::::::::::::::::::::::::::::::::::::: :::::::::::::   // Module: replaces wsock32.dll to implement packet interception. //

Analyze the socket creation process today About how the user-mode socket enters the kernel state to sys_socke through the system call, so we will not analyze it here. Let's look at the kernel-mode socket entry. Syscall_define3 (socket, Int, family,

With the development of embedded technology and the popularization of high-speed broadband networks, remote monitoring using networks has been widely accepted. Embedded Network Monitoring Technology has gradually developed and matured under these

Document directory Ping Command Implementation Program Ping Running Effect 25.1. Overview The original set of interfaces provides the following three functions that are not generally provided by TCP and UDP sets of interfaces.1. Use the original

Close_wait: after a party disconnects from the network, the peer does not detect this error (the other party disconnects) and does not call closesocket, resulting in this status; when disconnecting: When a fin is sent from the left side of the

Original article:A simple, extensible HTTP server in cocoa Address: http://cocoawithlove.com/2009/07/simple-extensible-http-server-in-cocoa.html   HTTP is a simple communication protocol between computers. On the iPhone, because there is no APIs for