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Unicode C

SMTP using SOCKS5, SOCKS4 Proxy

Demonstrates how to communicate with an SMTP server via a SOCKS4 or SOCKS5 proxy.

Chilkat Unicode C Downloads

Unicode C
#include <C_CkMailManW.h>
#include <C_CkEmailW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMailManW mailman;
    HCkEmailW email;

    success = FALSE;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  The mailman object is used for sending and receiving email.
    mailman = CkMailManW_Create();

    //  To use a SOCKS4 or SOCKS5 proxy, simply set the following
    //  properties prior to making any calls that communicate with
    //  an SMTP server:
    //  The SOCKS hostname may be a domain name or 
    //  IP address:
    CkMailManW_putSocksHostname(mailman,L"www.mysocksproxyserver.com");
    CkMailManW_putSocksPort(mailman,1080);
    CkMailManW_putSocksUsername(mailman,L"myProxyLogin");
    CkMailManW_putSocksPassword(mailman,L"myProxyPassword");
    //  Set the SOCKS version to 4 or 5 based on the version
    //  of the SOCKS proxy server:
    CkMailManW_putSocksVersion(mailman,5);
    //  Note: SOCKS4 servers only support usernames without passwords.
    //  SOCKS5 servers support full login/password authentication.

    //  Set the SMTP server.
    CkMailManW_putSmtpHost(mailman,L"smtp.chilkatsoft.com");

    //  Set the SMTP login/password (if required)
    CkMailManW_putSmtpUsername(mailman,L"myUsername");
    CkMailManW_putSmtpPassword(mailman,L"myPassword");

    //  Create a new email object
    email = CkEmailW_Create();

    CkEmailW_putSubject(email,L"This is a test");
    CkEmailW_putBody(email,L"This is a test");
    CkEmailW_putFrom(email,L"Chilkat Support <support@chilkatsoft.com>");
    success = CkEmailW_AddTo(email,L"Chilkat Admin",L"admin@chilkatsoft.com");

    //  Call SendEmail to connect to the SMTP server and send.
    //  The connection (i.e. session) to the SMTP server remains
    //  open so that subsequent SendEmail calls may use the
    //  same connection.  
    success = CkMailManW_SendEmail(mailman,email);
    if (success != TRUE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        CkEmailW_Dispose(email);
        return;
    }

    //  Some SMTP servers do not actually send the email until 
    //  the connection is closed.  In these cases, it is necessary to
    //  call CloseSmtpConnection for the mail to be  sent.  
    //  Most SMTP servers send the email immediately, and it is 
    //  not required to close the connection.  We'll close it here
    //  for the example:
    success = CkMailManW_CloseSmtpConnection(mailman);
    if (success != TRUE) {
        wprintf(L"Connection to SMTP server not closed cleanly.\n");
    }

    wprintf(L"Mail Sent!\n");


    CkMailManW_Dispose(mailman);
    CkEmailW_Dispose(email);

    }