Zig

Http Follow Redirects

See more HTTP Examples

Demonstrates how to automatically follow redirects. Zig

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

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

    const http = try chilkat.Http.init();
    defer http.deinit();

    // If you would like to see the HTTP session log to see how
    // HTTP redirects were followed.
    http.setSessionLogFilename("c:/temp/qa_output/sessionLog.txt");

    // Run the test using this URL.
    // (Works while httpbin.org keeps the test endpoint available.)

    const url = "https://httpbin.org/redirect-to?url={$redirectUrl}&status_code={$statusCode}";

    http.setUrlVar("redirectUrl", "https://chilkatsoft.com/helloWorld.json") catch {};
    http.setUrlVar("statusCode", "302") catch {};

    const json_response = http.quickGetStr(alloc, url) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Response status code: {d}\n", .{http.getLastStatus()});
    std.debug.print("{s}\n", .{json_response});

    // How to tell if the request was redirected, and if so,
    // what was the final redirect URL?
    std.debug.print("Was Redirected: {}\n", .{http.getWasRedirected()});
    std.debug.print("Final Redirect URL: {s}\n", .{try http.getFinalRedirectUrl(alloc)});

    // Output:

    // Response status code: 200
    // { "hello": "world" }
    // Was Redirected: True
    // Final Redirect URL: https://chilkatsoft.com/helloWorld.json

    // -----------------------------------------------
    // Here are the contents of the sessionLog.txt

    // ---- Sending Sat, 30 Aug 2025 11:41:37 GMT ----
    // GET /redirect-to?url=https%3A%2F%2Fchilkatsoft.com%2FhelloWorld.json&status_code=302 HTTP/1.1
    // Host: httpbin.org
    // Accept: */*
    // Accept-Encoding: gzip
    //
    //
    // ---- Received Sat, 30 Aug 2025 11:41:37 GMT ----
    // HTTP/1.1 302 FOUND
    // Date: Sat, 30 Aug 2025 11:41:38 GMT
    // Content-Type: text/html; charset=utf-8
    // Content-Length: 0
    // Connection: keep-alive
    // Server: gunicorn/19.9.0
    // Location: https://chilkatsoft.com/helloWorld.json
    // Access-Control-Allow-Origin: *
    // Access-Control-Allow-Credentials: true
    //
    //
    // ---- Sending Sat, 30 Aug 2025 11:41:38 GMT ----
    // GET /helloWorld.json HTTP/1.1
    // Host: chilkatsoft.com
    // Accept: */*
    // Accept-Encoding: gzip
    //
    //
    // ---- Received Sat, 30 Aug 2025 11:41:38 GMT ----
    // HTTP/1.1 200 OK
    // Content-Type: application/json
    // Last-Modified: Sun, 20 Aug 2023 11:36:27 GMT
    // Accept-Ranges: bytes
    // ETag: "34c27f8e5ad3d91:0"
    // Server: Microsoft-IIS/10.0
    // X-Powered-By: ASP.NET
    // Date: Sat, 30 Aug 2025 11:41:38 GMT
    // Content-Length: 22
    //
    // { "hello": "world" }
}