Zig

FTP Automatic Post-Connect Commands

Demonstrates the AutoFeat, AutoSyst, AutoOptsUtf8, and AutoXcrc properties, which control commands Chilkat issues automatically around connecting and transferring.

Background: Chilkat normally probes and adapts to a server on its own: AutoFeat discovers capabilities with FEAT, AutoSyst learns the OS type to parse legacy listings, and AutoOptsUtf8 enables UTF-8 filenames when the server advertises it. These are on by default and rarely worth changing. AutoXcrc is the exception worth enabling deliberately — it verifies each upload with the server's XCRC checksum, catching corruption automatically where supported.

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Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const ftp = try chilkat.Ftp2.init();
    defer ftp.deinit();

    ftp.setHostname("ftp.example.com");
    ftp.setUsername("myFtpLogin");

    // These auto-* properties control commands Chilkat sends automatically after connecting.  They
    // are on/off by default as noted, and are rarely changed.

    // AutoFeat (default true): automatically send FEAT to discover server capabilities.
    ftp.setAutoFeat(true);

    // AutoSyst (default true): automatically send SYST after login to learn the server OS type.
    ftp.setAutoSyst(true);

    // AutoOptsUtf8 (default true): send OPTS UTF8 ON when the FEAT response advertises UTF8.
    ftp.setAutoOptsUtf8(true);

    // AutoXcrc (default false): request an XCRC checksum after each upload and treat a mismatch as
    // a failure, giving automatic post-upload verification where the server supports XCRC.
    ftp.setAutoXcrc(true);

    // Normally you would not hard-code the password in source.  You should instead obtain it
    // from an interactive prompt, environment variable, or a secrets vault.
    ftp.setPassword("myPassword");

    ftp.connect() catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Connected with the configured automatic features.\n", .{});

    ftp.disconnect() catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };
}