network programming in c books pdf

... = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); Trang 24Accepting Connections#include <sys/types.h> #include <sys/socket.h> int connfd; struct sockaddr_in cliaddr; ... give structure to the address struct in_addr { in_addr_t s_addr; }; struct sockaddr_in { uint8_t sin_len; sa_family_t sin_family; in_port_t sin_port; struct in_addr sin_addr; char sin_pad[16];}; ... structure to the address struct in6_addr { uint8_t s6_addr[16];}; struct sockaddr_in6 { uint8_t sin6_len; sa_family_t sin6_family; in_port_t sin6_port; uint32_t sin6_flowinfo; struct in6_addr

Ngày tải lên: 05/09/2013, 09:57

... application programming interface 153where c:\picture.jpg is the image you wish to display 5.6 Mail application programming interface Microsoft Outlook provides an interface to applications to access ... form a custom Web browser This time, instead of includingthe COM control in the project by right-clicking on the toolbox and add-ing it there, we call the COM control directly through code This ... = New Object(1) {} Dim ITCObject As Object ITC = Type.GetTypeFromProgID("InetCtls.Inet") ITCObject = Activator.CreateInstance(ITC) parameter(0) = CType(tbServer.Text, String) parameter(1)

Ngày tải lên: 12/08/2014, 21:20

... textbox could then be modified from code by accessingthe tbText object In classic ASP, the only way to achieve such an effectwould be to include code within the textbox declaration, such as <input ... is included in the design view, it can be moved andscaled by clicking and dragging on the edge of the image well-More advanced features can be accessed via Internet Explorer’sexecCommand function ... shortcut keys to format text (e.g., Ctrl + B, Bold; Ctrl + I, Italic;Ctrl + U, Underline) By right-clicking on Internet Explorer in designmode, a user can include images, add hyperlinks, and switch

Ngày tải lên: 12/08/2014, 21:20

... than plain text The secondsection describes asymmetric encryption, which is most applicable forsecuring data in transit The chapter concludes with a discussion on sym-metric encryption, which is ... stored inXML (string) format Open clsCryptography and enter the following code: C# namespace rsa { public class clsCryptography { private RSACryptoServiceProvider RSA; public string PublicKey; ... System.Text.Encoding.ASCII.GetBytes(tbWorking.Text); Encrypted = clsRSA.Encrypt(PlainText, clsRSA.PublicKey); tbWorking.Text = System.Text.Encoding.ASCII.GetString(Encrypted); } private void btnDecrypt_Click(object

Ngày tải lên: 12/08/2014, 21:20

... data moving quickly 11.2.1 Caching Caching can increase network performance by storing frequently accessedstatic data in a location that provides faster data return than the normalaccess time ... twopublic variables and two functions Create the class thus: C# public class WebProxy { public Socket clientSocket; public Form1 UserInterface; } VB.NET Public Class WebProxy Public clientSocket ... byte[1024]; int bytes = clientSocket.Receive(readIn); string clientmessage = Encoding.ASCII.GetString(readIn); clientmessage = clientmessage.Substring(0,bytes); int posHost = clientmessage.IndexOf("Host:");

Ngày tải lên: 12/08/2014, 21:20

... public static int hCall; public static int hTAPI; public static int lNumLines; public static int hLine; public static linedevcaps lpLineDevCaps; public static frmTAPI userInterface; public const ... public const int LINE_LINEDEVSTATE = 8; public const int LINE_CALLSTATE = 2; public const int LINECALLSTATE_OFFERING = 0x2; public const int LINECALLSTATE_ACCEPTED = 0x4; public const int LINECALLSTATE_DISCONNECTED ... InterfaceStatistics class IncomingPacketsDiscarded Gets the number of incoming packets discarded IncomingPacketsWithErrors Gets the number of incoming packets with errors IncomingUnknownProtocolPackets

Ngày tải lên: 12/08/2014, 21:20

... interface IComPlusServer { void ExecSQLAsync(string SQL,string strDSN); } [InterfaceQueuing(Interface="IComPlusServer")] public class ComPlusServer : ServicedComponent, IComPlusServer ... public void ExecSQLAsync(string SQL,string strDSN) { OleDbConnection DSN = new OleDbConnection(strDSN); End Interface <InterfaceQueuing([Interface] := "IComPlusServer")> _ Public ... directly execute the ExecSQLAsync method onthe ComPlusService component Instead it writes an instruction to theComPlusService queue in MSMQ, which is then read back by componentservices, which

Ngày tải lên: 12/08/2014, 21:20

... certificate can be included in the client request by adding it to the ClientCertificates collection thus: C# localhost.Service1 webservice = new localhost.Service1(); X509Certificate x509 = X509Certificate.CreateFromCertFile( ... Credentials rein-property of the Web service, such as in the following code snippet: C# localhost.Service1 webservice = new localhost.Service1(); CredentialCache cache = new CredentialCache(); Trang ... svc.BegingetServerVariableNames(new AsyncCallback(ServiceCallback1),null); svc.BegingetServerVariable("REMOTE_ADDR",new AsyncCallback(ServiceCallback2),null); } private void ServiceCallback1(IAsyncResult result)

Ngày tải lên: 12/08/2014, 21:20

... return Rcode; } VB.NET Public Function describeResponse(ByRef code As Integer) _ As String Trang 4 Dim Rcode As String Select Case code Case 0 : Rcode = "Success" Case 11001 : Rcode = ... command line Press Connect→→type Root→→Connect→→ →Enum Instances→→type NAMESPACE→→→ok A few namespaces of inter-est are: WBE-
root\directory\ldap: provides access to active directory services ... Searcher As ManagementObjectSearcher = New _ ManagementObjectSearcher(Scope, Query) Dim ItemCollection As ManagementObjectCollection ItemCollection = Searcher.Get() lvWMI.Clear() lvWMI.Columns.Clear()

Ngày tải lên: 12/08/2014, 21:20

... the new sockets The server gets a socket for an incoming client connection by calling accept () int accept(int socket, struct sockaddr *clientAddress, unsigned int *addressLength) accept() dequeues ... new socket using send() and r ecv ( ) 9 Close the client connection using c l o s e ( ) Creating the socket, sending, receiving, and closing are the same as in the client The differences in the ... basic concepts and terminology 1.1 Networks, Packets, and Protocols A c o m p u t e r network consists of machines interconnected by c o m m u n i c a t i o n channels We call these machines

Ngày tải lên: 05/11/2012, 14:45

... http://www.fz-juelich.de/zam/cxx/ ➠ Parallel Programming with C++ ➠ Forschungszentrum Jülich Local C++ Information ❑ Official C++ On-line FAQ http://www.cerfnet.com/~mpcline/C++-FAQs-Lite/ This C++ Course ... = 0 ❑ Pascalrecords cannot be returned by functions int i; integer,target :: i var int *a; a : ^integer; integer,pointer :: a char *b, *c; b, c : ^char; character,pointer :: b, c Machine *mp; ... meeting (Lund, Schweden) Oct Cfront Release 3.0 (including templates) 1992 Feb 1st DEC C++ release (including templates and exceptions) Mar 1st Microsoft C++ release May 1st IBM C++ release (including

Ngày tải lên: 13/12/2013, 08:15

... m_socListener.Bind( ipLocal ); //start listening m_socListener.Listen (4); // create the call back for any client connections m_socListener.BeginAccept(new AsyncCallback ( OnClientConnect ... callback BeginAccept is a non-blocking method that returns immediately and when a client has made requested a connection, the callback routine is called and you can accept the connection by calling ... by calling EndAccept The EndAccept returns a socket object which represents the incoming connection Here is the code for the callback delegate: public void OnClientConnect(IAsyncResult asyn) {

Ngày tải lên: 18/01/2014, 08:20

... 1Socket Programming in C/C++cSeptember 24, 2004 Trang 3Sockets are a protocol independent method of creating a connection between processes Sockets can be either I connection based or connectionless: ... connection is completed, thesocket is closed, and next connection can beaccepted Forking server: After an accept, a child process is forked off to handle the connection Variation: the child processesare ... build a concurrent server: I a fork is performed after the accept I The child process closes listenFd, and communicates usingconnectFd I The parent process closses connectFd, and then loops back tothe

Ngày tải lên: 15/03/2014, 17:20

... make the contact that detects the input point A capacitive touch screen works in a different way An array of conductors underneath the screen surface detects the change in capacitance caused by ... were creating an application to look after bank accounts we could create a class to hold account information: public class Account { private decimal balance ; private string name ; public string ... you install the framework you get a command line compiler which can take C# source files and convert them into executable ones using console commands such as: csc MyProg.cs This command will compile

Ngày tải lên: 17/03/2014, 13:20

... were creating an application to look after bank accounts we could create a class to hold account information: public class Account{ private decimal balance ; private string name ; public string ... (which is independent of any particular computer hardware) into machine code instructions that the computer processor can actually execute This compilation process is called Just In Time compilation ... 119 Connecting to a Database 119 Using LINQ to connect Databases to Objects 120 6.2 Creating Data Relationships with LINQ 129 LINQ Associations 130 LINQ Queries and Joining 135 Joining two

Ngày tải lên: 23/03/2014, 22:21

... (if (= col maxp) tch (append (append tch (calcLine ch (+ col 1) line maxp)) tch)) ) ) (defun calcLines (line maxp) (let* ((ch (+ line (char-int #\A))) (l (append (calcLine ch 0 line maxp) ... in the much newer language Haskell: calcLine :: Int - > Int - > Int - > Int - > String calcLine ch col line maxp = let tch = if maxp - line == col then [chr ch] else “.” in if col ... an instance fi eld exists once per instance Class methods can access information in class fi elds only, whereas instance methods can access information in the instance fi elds of their own instance

Ngày tải lên: 28/04/2014, 16:01

... <sys/socket.h> #include <netinet /in. h> #include <arpa/inet.h> #define MYPORT 3490 main() { int sockfd; struct sockaddr _in my_addr; sockfd = socket(AF_INET, SOCK_STREAM, 0); // do some error checking! my_addr.sin_family ... to Network Programming Using Internet Sockets 12 Here is the synopsis for the bind() system call: #include <sys/types.h> #include <sys/socket.h> int bind(int sockfd, struct sockaddr ... local struct sockaddr _in. This is where the information about the incoming connection will go (and with it you can determine which host is calling you from which port). addrlen is a local integer...

Ngày tải lên: 19/03/2014, 13:41