C

Http Follow Redirects

See more HTTP Examples

Demonstrates how to automatically follow redirects. C

#include <C_CkHttp.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    const char *url;
    const char *jsonResponse;

    http = CkHttp_Create();

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

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

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

    CkHttp_SetUrlVar(http,"redirectUrl","https://chilkatsoft.com/helloWorld.json");
    CkHttp_SetUrlVar(http,"statusCode","302");

    jsonResponse = CkHttp_quickGetStr(http,url);
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        return;
    }

    printf("Response status code: %d\n",CkHttp_getLastStatus(http));
    printf("%s\n",jsonResponse);

    //  How to tell if the request was redirected, and if so,
    //  what was the final redirect URL?
    printf("Was Redirected: %d\n",CkHttp_getWasRedirected(http));
    printf("Final Redirect URL: %s\n",CkHttp_finalRedirectUrl(http));

    //  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" }


    CkHttp_Dispose(http);

    }