C

HTTP GET with Non-USASCII Query Params

See more HTTP Examples

This example illustrates how query parameters in a URL are typically encoded and transmitted. C

#include <C_CkStringBuilder.h>
#include <C_CkHttp.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkStringBuilder sbCompanyName;
    HCkStringBuilder sbUrl;
    HCkHttp http;
    HCkStringBuilder sbResponse;

    success = FALSE;

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

    // First, let's load the string "Grünhöfer GmbH" from a file.  (This is a fictitious company name.)
    // The file uses the utf-8 charset encoding.
    sbCompanyName = CkStringBuilder_Create();
    success = CkStringBuilder_LoadFile(sbCompanyName,"qa_data/txt/companyName.txt","utf-8");
    // Assuming success for this example...

    // We'll send an HTTP GET request to https://chilkatsoft.com/example?company_name={company name}

    // When sending an HTTP GET request with query parameters that contain accented characters 
    // (e.g., umlauts: ä, ö, ü), they must be percent-encoded (URL encoded) to ensure proper transmission and 
    // interpretation by the server.  This is based on their UTF-8 byte values.
    sbUrl = CkStringBuilder_Create();
    CkStringBuilder_Append(sbUrl,"https://chilkatsoft.com/example?company_name=");
    CkStringBuilder_Append(sbUrl,CkStringBuilder_getEncoded(sbCompanyName,"url","utf-8"));

    http = CkHttp_Create();

    // Send the following HTTP GET request:

    // GET /example?company_name=Gr%C3%BCnh%C3%B6fer%20GmbH HTTP/1.1
    // Host: chilkatsoft.com
    // Accept: */*
    // Accept-Encoding: gzip

    sbResponse = CkStringBuilder_Create();
    success = CkHttp_QuickGetSb(http,CkStringBuilder_getAsString(sbUrl),sbResponse);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkStringBuilder_Dispose(sbCompanyName);
        CkStringBuilder_Dispose(sbUrl);
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponse);
        return;
    }

    printf("response status code: %d\n",CkHttp_getLastStatus(http));
    printf("%s\n",CkStringBuilder_getAsString(sbResponse));


    CkStringBuilder_Dispose(sbCompanyName);
    CkStringBuilder_Dispose(sbUrl);
    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbResponse);

    }