Zig

HTTP Request Boundary Property

Explains and demonstrates the HTTP request Boundary property. For multipart HTTP requests, Chilkat auto-generates a boundary string when the Boundary property is left unset (or empty). For example:

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=------------090207000006060206010508
Host: domain
Content-Length: 378

--------------090207000006060206010508
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--------------090207000006060206010508
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--------------090207000006060206010508--

If the Boundary property is set, then Chilkat uses it. For example, if the Boundary property is set to "ABC123HELLOWORLD"

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=ABC123HELLOWORLD
Host: domain
Content-Length: 318

--ABC123HELLOWORLD
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--ABC123HELLOWORLD
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--ABC123HELLOWORLD--

Zig

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

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

    const req = try chilkat.HttpRequest.init();
    defer req.deinit();

    req.setHttpVerb("POST");
    req.setPath("/something");
    req.setContentType("multipart/form-data");

    req.addStringForUpload("fileA", "fileA.txt", "This is the contents of file A", "utf-8") catch {};
    req.addStringForUpload("fileB", "fileB.txt", "This is the contents of file B", "utf-8") catch {};

    // When the Boundary property is empty (has not yet been set)
    // Chilkat auto-generates a random boundary for the request.
    // This should almost always be sufficient.
    // For example, one can see the generated boundary here:
    std.debug.print("{s}\n", .{try req.generateRequestText(alloc)});

    // If the Boundary property is set to a specific string, then the
    // request will use it:
    req.setBoundary("ABC123HELLOWORLD");
    std.debug.print("{s}\n", .{try req.generateRequestText(alloc)});
}