(C++) POP3 using HTTP Proxy

Demonstrates how to communicate with a POP3 server through an HTTP proxy.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <CkMailMan.h>
#include <CkEmailBundle.h>
#include <CkEmail.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    // The mailman object is used for receiving (POP3) 
    // and sending (SMTP) email.
    CkMailMan mailman;

    // To connect through an HTTP proxy, set the HttpProxyHostname
    // and HttpProxyPort properties to the hostname (or IP address)
    // and port of the HTTP proxy.  Typical port numbers used by
    // HTTP proxy servers are 3128 and 8080.
    mailman.put_HttpProxyHostname("www.my-http-proxy.com");
    mailman.put_HttpProxyPort(3128);

    // Important:  Your HTTP proxy server must allow non-HTTP
    // traffic to pass.  Otherwise this does not work.

    // Set the POP3 server's hostname
    mailman.put_MailHost("pop.someMailServer.com");

    // Set the POP3 login/password.
    mailman.put_PopUsername("myLogin");
    mailman.put_PopPassword("myPassword");

    // Copy the all email from the user's POP3 mailbox 
    // into a bundle object.  The email remains on the server.
    // 
    // NOTE: All methods that communicate with a POP3 server
    // will automatically connect and authenticate (i.e. login)
    // if not already connected.  The connection will remain
    // open after the method call returns so that subsequent
    // calls do not need to re-establish the connection.
    // In this case, the connection is established via the HTTP
    // proxy.
    CkEmailBundle bundle;
    bool keepOnServer = true;
    bool headersOnly = false;
    // Irrelevent because we are not downloading headers-only
    int numBodyLines = 0;
    success = mailman.FetchAll(keepOnServer,headersOnly,numBodyLines,bundle);
    if (success == false) {
        std::cout << mailman.lastErrorText() << "\r\n";
        return;
    }

    CkEmail email;
    int i = 0;
    while (i < bundle.get_MessageCount()) {
        bundle.EmailAt(i,email);

        std::cout << "From: " << email.ck_from() << "\r\n";
        std::cout << "Subject: " << email.subject() << "\r\n";
        i = i + 1;
    }

    success = mailman.Pop3EndSession();
    }