network programming in c books

... = 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

... network”): #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> int inet_aton(const char *cp, struct in_addr *inp); And here’s a sample usage, while packing a struct ... error checking for these calls: bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)); listen(sockfd, BACKLOG); Trang 19sin_size = sizeof(struct sockaddr_in);new_fd = accept(sockfd, ... will be connecting to int main(int argc, char *argv[]) { int sockfd; struct sockaddr_in their_addr; // connector’s address information struct hostent *he; Trang 29their_addr.sin_family = AF_INET;

Ngày tải lên: 19/03/2014, 13:41

... to help explain the basics of database access in .NET and the concept of dataset serialization. Database programming is centered on two key strings: the connection string and structured query ... new OleDbConnection(szDSN); Table 2.6 Connection strings for common databases. Database type Connection string Microsoft Access Provider=Microsoft.Jet.OLEDB.4.0; Data Source=< location of ... is a Microsoft Access file located at c:\purchaseOrder.mdb C# string szDSN = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=C:\\purchaseOrder.mdb"; OleDbConnection DSN

Ngày tải lên: 12/08/2014, 21:20

... could then be modified from code by accessing the tbText object. In classic ASP, the only way to achieve such an effect would be to include code within the textbox declaration, such as <input ... requiring them to take a crash course in HTML Internet Explorer can run in a special design mode, which is acceptable as a WYSIWYG editor The trick to accessing design mode in Internet Explorer ... directly into the Internet Explorer window and use wellknown shortcut keys to format text (e.g., Ctrl + B, Bold; Ctrl + I, Italic; Ctrl + U, Underline) By right-clicking on Internet Explorer in

Ngày tải lên: 12/08/2014, 21:20

... secure than plain text. The second section describes asymmetric encryption, which is most applicable for securing data in transit. The chapter concludes with a discussion on sym- metric encryption, ... RSACryptoServiceProvider RSA; public string PublicKey; public string PrivateKey; public byte[] Encrypt(byte[] Data, string PublicKeyIn) { RSA.FromXmlString(PublicKeyIn); return RSA.Encrypt(Data, ... RSACryptoServiceProvider Public PublicKey As String Public PrivateKey As String Public function Encrypt(Data as byte(),PublicKeyIn as _ string) as Byte() RSA.FromXmlString(PublicKeyIn)

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

... 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

... 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

... contain much code: using using using using using using using using using using using using System; System.Collections.Generic; System.Linq; System.Net; System .Windows; System .Windows. Controls; ... of conductors underneath the screen surface detects the change in capacitance caused by the presence of a finger on the surface. The touch screen hardware then works out where on the screen ... comparable between processors. The processor in the Windows PC might take five clock ticks to do something that the Windows Phone processor needs ten ticks to perform. The Windows PC processor might

Ngày tải lên: 17/03/2014, 13:20

... an Echo Server 156 7.3 Creating a Transmission Control Protocol (TCP) Connection 157 Reading a Web Page 157 7.4 Connecting to a Data Source 163 Using the WebClient class 163 7.5 Using LINQ ... Application Switching 210 The Windows Phone Application LifeCycle 211 Fast Application Switching in an application 213 Fast Application Switching and Development 218 Fast Application Switching and ... Windows Phone  10 Windows Phone Gyroscope A mechanical gyroscope is a device that always points in a particular direction The Windows Phone contains an electronic version which

Ngày tải lên: 23/03/2014, 22:21

... ❘ CHAPTER 1 A LOOK AT FUNCTIONAL PROGRAMMING HISTORY else tch ++ (calcLine ch (col+1) line maxp) ++ tch calcLines :: Int -> Int -> String calcLines line maxp = let ch = (ord ‘A’) + line in ... www.it-ebooks.info PROFESSIONAL Functional Programming in C# CLASSIC PROGRAMMING TECHNIQUES FOR MODERN PROJECTS Oliver Sturm www.it-ebooks.info Professional Functional Programming in C#: Classic Programming ... maxp line)) (cons ch nil) (cons 46 nil)))) (if (= col maxp) tch (append (append tch (calcLine ch (+ col 1) line maxp)) tch)) ) ) (defun calcLines (line maxp) (let* ((ch (+ line (char-int #\A)))

Ngày tải lên: 28/04/2014, 16:01

... when the object is accessed. c) A static constructor can have public as a accessibility modifiers 74. class A { public static int X = B.Y + 1; } class B { public static int Y = A.X ... explicitly or implicitly. b) Static constructors can have accessibility modifiers. e) Static constructors are called when the class is loaded. c) Static constructors cannot be called ... error. c) Incompatible type for ’=’ can’t convert SubClass to SuperClass. b) No constructor matching SuperClass() found in class SuperClass d) Wrong number of arguments in constructor....

Ngày tải lên: 21/08/2012, 15:55

... is called automatically when the object is accessed. c) A static constructor can have public as a accessibility modifiers 74. class A { public static int X = B.Y + 1; } class B { public static ... value c) get b) set d) find 100. public class A:B ,C, D{ } The above code represents ______ [0.5] a) multilevel interface c) multiple interface b) hierarchical interface d) multiple inheritance 101. ... False 25. Access Modifiers for variables in C# can be the following (Select all that apply) [1.0] a) Public c) Private b) Protected d) Public protected 26. In C# , an underscore is allowed as an initial...

Ngày tải lên: 09/04/2013, 09:10

... Fortran Boolean (int) boolean logical Character char, wchar_t char character(n) Integer short int integer integer int long int FloatingPoint float real real double Complex ❖ (in C9 9) ❖ complex ❑ Size ... " ;C& quot; and include guards. Programming in C+ +  Dr. Bernd Mohr, FZ Jülich, ZAM Page 76 From C to C+ + Constants ❑ Typical C code used the C preprocessor to define symbolic constants: #define ... with C+ + ➠ Forschungszentrum Jülich Local C+ + Information ❑ Official C+ + On-line FAQ http://www.cerfnet.com/~mpcline /C+ +-FAQs-Lite/ Programming in C+ +  Dr. Bernd Mohr, FZ Jülich, ZAM Page 12 Introduction...

Ngày tải lên: 13/12/2013, 08:15