Swift

SFTP Fsync -- Flush an Open File on the Server

See more SFTP Examples

Demonstrates how to flush the contents of an open file on the server. This example only works for servers that implement the fsync@openssh.com extension.

Note: This example requires Chilkat v9.5.0.71 or later.

Swift

func chilkatTest() {
    var success: Bool = false

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

    let sftp = CkoSFtp()!

    // Pass a domain or IP address..
    success = sftp.connect(hostname: "my-sftp-server.com", port: 22)
    if success == true {
        success = sftp.authenticatePw(login: "mySFtpLogin", password: "mySFtpPassword")
    }

    if success == true {
        success = sftp.initializeSftp()
    }

    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Open a file on the server for writing.
    var handle: String? = sftp.openFile(filename: "myTest.txt", access: "writeOnly", createDisp: "createTruncate")
    if sftp.lastMethodSuccess != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Write some text to the file:
    success = sftp.writeFileText(sftpHandle: handle, charset: "ansi", textData: "abcdefghijklmnopqrstuvwxyz")
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Make sure the server flushes what we wrote to the disk..
    // (this is requires a server that implements the fsync@openssh.com SFTP protocol extension)
    success = sftp.fsync(handle: handle)
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // ....
    // ....

    success = sftp.writeFileText(sftpHandle: handle, charset: "ansi", textData: "ABCDEFGHIJKLMNOPQRSTUVWXYZ")
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Close the file.
    success = sftp.closeHandle(sftpHandle: handle)
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    print("Success.")

}