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(Unicode C) SSL Server ExampleDemonstrates how to create an SSL socket for accepting connections. This example is *very* simple in that it will create an SSL socket for accepting a single connection. It will read a message from the client, send a reply, and exit.
#include <C_CkSocketW.h> #include <C_CkCertStoreW.h> #include <C_CkCertW.h> void ChilkatSample(void) { HCkSocketW listenSslSocket; HCkCertStoreW certStore; BOOL success; HCkCertW cert; int myPort; int backLog; HCkSocketW clientSock; int maxWaitMillisec; const wchar_t *receivedMsg; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. listenSslSocket = CkSocketW_Create(); // An SSL server needs a digital certificate. This example loads it from a PFX file. // Create an instance of a certificate store object, load a PFX file, // locate the certificate we need, and use it. // (a PFX file may contain more than one certificate.) certStore = CkCertStoreW_Create(); // The 1st argument is the filename, the 2nd arg is the // PFX file's password: success = CkCertStoreW_LoadPfxFile(certStore,L"chilkat.pfx",L"test"); if (success != TRUE) { wprintf(L"%s\n",CkCertStoreW_lastErrorText(certStore)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } // Find the certificate to be used for SSL: cert = CkCertStoreW_FindCertBySubject(certStore,L"Chilkat Software, Inc."); if (CkCertStoreW_getLastMethodSuccess(certStore) == FALSE) { wprintf(L"%s\n",CkCertStoreW_lastErrorText(certStore)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } // Use the certificate: success = CkSocketW_InitSslServer(listenSslSocket,cert); if (success != TRUE) { CkCertW_Dispose(cert); wprintf(L"%s\n",CkSocketW_lastErrorText(listenSslSocket)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } CkCertW_Dispose(cert); // Bind and listen on a port: myPort = 8123; // Allow for a max of 5 queued connect requests. backLog = 5; success = CkSocketW_BindAndListen(listenSslSocket,myPort,backLog); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(listenSslSocket)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } // If accepting an SSL/TLS connection, the SSL handshake is part of the connection // establishment process. This involves a few back-and-forth messages between the // client and server to establish algorithms and a shared key to create the secure // channel. The sending and receiving of these messages are governed by the // MaxReadIdleMs and MaxSendIdleMs properties. If these properties are set to 0 // (and this is the default unless changed by your application), then the // AcceptNextConnection can hang indefinitely during the SSL handshake process. // Make sure these properties are set to appropriate values before calling AcceptNextConnection. // Set a 10 second max for waiting to read/write. This is for the SSL/TLS handshake establishment. CkSocketW_putMaxReadIdleMs(listenSslSocket,10000); CkSocketW_putMaxSendIdleMs(listenSslSocket,10000); // Accept a single client connection and establish the secure SSL/TLS channel: maxWaitMillisec = 20000; clientSock = CkSocketW_AcceptNextConnection(listenSslSocket,maxWaitMillisec); if (CkSocketW_getLastMethodSuccess(listenSslSocket) == FALSE) { wprintf(L"%s\n",CkSocketW_lastErrorText(listenSslSocket)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } // The client (in this example) is going to send a "Hello Server! -EOM-" // message. Read it: receivedMsg = CkSocketW_receiveUntilMatch(clientSock,L"-EOM-"); if (CkSocketW_getLastMethodSuccess(clientSock) != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(clientSock)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } wprintf(L"%s\n",receivedMsg); // Send a "Hello Client! -EOM-" message: success = CkSocketW_SendString(clientSock,L"Hello Client! -EOM-"); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(clientSock)); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); return; } // Close the connection with the client // Wait a max of 20 seconds (20000 millsec) success = CkSocketW_Close(clientSock,20000); CkSocketW_Dispose(clientSock); CkSocketW_Dispose(listenSslSocket); CkCertStoreW_Dispose(certStore); } |
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