SFTP Resume Download

Demonstrates how to resume an SFTP download from a previous partial download.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkSFtp.h>

void ChilkatSample(void)
    {
    HCkSFtp sftp;
    BOOL success;
    long port;
    const char * hostname;
    const char * remoteFilePath;
    const char * localFilePath;

    //  Important: It is helpful to send the contents of the
    //  sftp.LastErrorText property when requesting support.

    sftp = CkSFtp_Create();

    //  Any string automatically begins a fully-functional 30-day trial.

    success = CkSFtp_UnlockComponent(sftp,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    //  Set some timeouts, in milliseconds:
    CkSFtp_putConnectTimeoutMs(sftp,5000);
    CkSFtp_putIdleTimeoutMs(sftp,10000);

    //  Connect to the SSH server.
    //  The standard SSH port = 22
    //  The hostname may be a hostname or IP address.

    hostname = "www.my-ssh-server.com";
    port = 22;
    success = CkSFtp_Connect(sftp,hostname,port);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    //  Authenticate with the SSH server.  Chilkat SFTP supports
    //  both password-based authenication as well as public-key
    //  authentication.  This example uses password authenication.
    success = CkSFtp_AuthenticatePw(sftp,"myLogin","myPassword");
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    //  After authenticating, the SFTP subsystem must be initialized:
    success = CkSFtp_InitializeSftp(sftp);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    //  Download the file:

    localFilePath = "c:/temp/hamlet.xml";
    remoteFilePath = "subdir1/subdir2/hamlet.xml";
    //  The ResumeDownloadFileByName method will check
    //  the local file and begin downloading the remote file
    //  at the appropriate point.  For example, if the local
    //  file is already 215624 bytes long, it will begin downloading
    //  the remote file at the 215625'th byte -- appending to
    //  the local file.
    success = CkSFtp_ResumeDownloadFileByName(sftp,remoteFilePath,localFilePath);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    printf("Success.\n");

    CkSFtp_Dispose(sftp);

    }