socket programming in c

1. The main steps and important functions of socket programmingSocket programming on Windows first requires Soket programming is generally divided into UDP communication and TCP communication, then the simple UDP communication and TCP communication before the process is basically the same, only when sending and receiving data will be different.General steps for UDP communication:(1), initializationWsadata WD; WSAStartup (0X0202,WD); Initialize Load W

Core Foundation FrameworkThe Core Foundation Framework (corefoundation.framework) is a set of C-language interfaces that provide basic data management and service capabilities for iOS applications. The following lists the data that the framework supports for management and what services are available:Group data types (arrays, collections, etc.)PackageString ManagementDate and time managementRAW Data Block ManagementPreference ManagementURL and Data flow operationsThreading and RunloopPort and

, (const char*) breuseaddr,sizeof (BOOL));2. If you want a soket that is already in the connected state to be forced to close after calling Closesocket, do not experience the TIME_WAIT process:BOOL Bdontlinger = FALSE;SetSockOpt (S,sol_socket,so_dontlinger, (const char*) bdontlinger,sizeof (BOOL));3. In the Send (), recv () process sometimes due to network conditions and other reasons, the collection can not be expected to proceed, and set the time an

following lists the data that the framework supports for management and what services are available: Group data types (arrays, collections, etc.) Package String Management Date and time management RAW Data Block Management Preference Management URL and Data flow operations Threading and Runloop Port and Soket Communication The Core Foundation framework is closely related to the foundation framework, which

", // "somelink. php? Name = "+ value,Type: 'post', // 'GET ',Data: "name =" + value, // POST requires data, get just writes the value into the URLSuccess: function (data ){// Console. log (); print the transfer information.}});------ Solution --------------------Http is an interactive format... it is a text protocol based on TCP/IP...That is to say, for servers that follow the HTTP standard, you can tell them the request content using the same HTTP standard protocol ..The most common client is

Core foundation frameworkThe core foundation framework is a set of C language interfaces that provide basic data management and service functions for iOS applications. The following lists the data and services that the Framework supports for management: Group data type (array, set, etc)PackageString ManagementDate and Time ManagementRaw data block managementPreference ManagementURL and data stream operationsThread and runloopPort and soket Communicati

　　 　　Interface prototype:Int Pascal far setsockopt (socket S, int level, int optname, const char far * optval, int optlen ); 1. If the socket is already in the established State (usually distinguished by the port number and flag ),Closesocket (usually does not close immediately and goes through the time_wait process) and wants to continue to reuse the socket:Bool breuseaddr = true;Setsockopt (S, sol_socket, so_reuseaddr, (const char *) breuseaddr, sizeof (bool )); 2. If you want to force close

following code is mainly implemented through 127. 0. 0. 1. This address forwards the packet to the real application, and forwards the response packet back.// If the content is sniffing, you can analyze and record the content here.// If it is an attack such as a TELNET server, you can use its high-Permission login user to analyze its login user, and then use it to send a specific package for execution as a hijacked user.Num = recv (ss, buf, 4096,0 );If (num> 0)Send (SC, buf, num, 0 );Else if (nu

service In the Grand Central Dispatch Application Core Foundation framework Core Foundation framework(CoreFoundation.frameworkIs a set of C language interfaces that provide basic data management and service functions for iOS applications. The following lists the data and services that the Framework supports for management: Group data type (array, set, etc) Package String Management Date and Time Management Raw data block management Preference Management URL and data stream operations T

receiving time limit: Int nNetTimeout = 1000; // 1 second // setsockopt (socket, SOL_S0CKET, SO_SNDTIMEO, (char *) nNetTimeout, sizeof (int )); // receipt time limit setsockopt (socket, SOL_S0CKET, SO_RCVTIMEO, (char *) nNetTimeout, sizeof (int )); 7). SO_DONTLINGER If you want to force close a soket that is already in the connection state after you call closesocket, it does not go through the TIME_WAIT process: BOOL bDontLinger = FALSE;setsockopt

1.Closesocket (usually does not close immediately and goes through the time_wait process) and wants to continue to reuse the socket:Bool breuseaddr = true;Setsockopt(S, sol_socket, so_reuseaddr, (const char *) breuseaddr, sizeof (bool )); 2.If you want to force close a soket that is already in the connection status after you call closesocketTime_wait process:Bool bdontlinger = false;Setsockopt(S, sol_socket, so_dontlinger, (const char *) bdontlinger

Setsockopt sets the socket status 1.Closesocket (usually does not close immediately and goes through the time_wait process) and wants to continue to reuse the socket:Bool breuseaddr = true;Setsockopt(S, sol_socket, so_reuseaddr, (const char *) breuseaddr, sizeof (bool )); 2.If you want to force close a soket that is already in the connection status after you call closesocketTime_wait process:Bool bdontlinger = false;Setsockopt(S, sol_socket, so_dontl

Setsockopt-socket detailed usage-C ++ paradise-C ++ blog Setsockopt 1.Closesocket (usually does not close immediately and goes through the time_wait process) and wants to continue to reuse the socket:Bool breuseaddr = true;Setsockopt(S, sol_socket, so_reuseaddr, (const char *) breuseaddr, sizeof (bool )); 2.If you want to force close a soket that is already in the connection status after you call closesocketTime_wait process:Bool bdontlinger

of C language interfaces that provide basic data management and service functions for iOS applications. The following lists the data and services that the Framework supports for management: Group data type (array, set, etc) Package String Management Date and Time Management Raw data block management Preference Management URL and data stream operations Thread and runloop Port and soket Communication The

The article has Http://hi.baidu.com/chary8088/blog/item/a47bfbd1c01d4fd6562c843f.html This format is intolerable !!!! The following format is displayed after I open it in advanced editing mode. Change to the normal mode, or the following format, messy Paste the content into notepad, And Then paste it from notepad. Or Chaos I can't stand it. I posted it to the above address. 1. if you want to reuse a socket that is already in the established State (usually distinguished by the port number and th

appears)Psignal (list signal descriptions and specified strings)Raise (send a signal to the current process)Sigaction (query or set the signal processing method)Sigaddset (add a signal to the signal set)Sigdelset (delete a signal from the signal set)Sigemptyset (initialize Signal Set)Sigfillset (add all signals to the signal set)Sigismember (test whether a signal has been added to the signal set)Signal (set Signal Processing Method)Sigpause (pause until the signal arrives)Sigpending (query sign

[Socket] How to unbind BIND ()? I am looking for information about setsockopt:1. If the socket is already in the established State (usually distinguished by the port number and flag ),Closesocket (usually does not close immediately and goes through the time_wait process) and wants to continue to reuse the socket:Bool breuseaddr = true;Setsockopt (S, sol_socket, so_reuseaddr, (const char *) breuseaddr, sizeof (bool ));2. If you want to force close a

I would like to thank you for posting the gdy files from csdn.Original post address: http://community.csdn.net/Expert/topic/3592/3592436.xml? Temp =. 2238275. I am sorry for the constant thanks from coolmei25 (Mei Sheng). belowI have written some of my experiences in network programming and hope to help him (^_^:1. If the socket is already in the established State (usually distinguished by the port number and flag ),Closesocket (usually does not close immediately and goes through the time_wait p

Document directory 1. so_reuseaddr 2. so_linger 3. so_sndtimeo so_rcvtimeo 4. so_rcvbuf so_sndbuf 5. so_broadcast 6. so_conditional_accept (this option is not available in centos6.3 (linux2.6) 7. so_linger 8. so_debug 9. so_rcvlowat so_sndlowat 11. so_keepalive 1. so_reuseaddr If the socket is already in the established status (usually distinguished by the port number and flag ),Closesocket (usually does not close immediately and goes through the time_wait process) and wants to con

;S3c2410_irqreg (x)-> C (x) + s3c24xx_va_irq)The soket system calls to operate network devices, rather than opening a device file;Check the hardware method of the network card. Make sure there are several network cards. CAT/proc/NET/dev or ifconfig-One method of viewing the IP address of the Local Machine, ping an IP address that cannot be connected; (in the absence of ifconfig );Ifconfig up --> open ifconfig down --> close;Register_netdev initializes