Unicode C

Read the REST Response Body into a StringBuilder

Demonstrates Rest.ReadRespSb, which reads the response body as text into a StringBuilder, replacing its previous contents.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

Chilkat Unicode C Downloads

Download Chilkat for Unicode C

Unicode C

#include <C_CkRestW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRestW rest;
    BOOL bTls;
    BOOL bAutoReconnect;
    int statusCode;
    HCkStringBuilderW sbResponse;
    const wchar_t *responseBody;

    success = FALSE;

    rest = CkRestW_Create();
    bTls = TRUE;
    bAutoReconnect = TRUE;
    success = CkRestW_Connect(rest,L"example.com",443,bTls,bAutoReconnect);
    if (success == FALSE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        return;
    }

    success = CkRestW_SendReqNoBody(rest,L"GET",L"/api/items/123");
    if (success == FALSE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        return;
    }

    statusCode = CkRestW_ReadResponseHeader(rest);
    if (statusCode < 0) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        return;
    }

    //  Read the response body as text into a StringBuilder, replacing its previous contents.
    sbResponse = CkStringBuilderW_Create();
    success = CkRestW_ReadRespSb(rest,sbResponse);
    if (success == FALSE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbResponse);
        return;
    }

    responseBody = CkStringBuilderW_getAsString(sbResponse);
    if (CkStringBuilderW_getLastMethodSuccess(sbResponse) == FALSE) {
        wprintf(L"%s\n",CkStringBuilderW_lastErrorText(sbResponse));
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbResponse);
        return;
    }

    wprintf(L"%s\n",responseBody);


    CkRestW_Dispose(rest);
    CkStringBuilderW_Dispose(sbResponse);

    }