Unicode C++

Get a REST Response Header by Name

Demonstrates Rest.ResponseHdrByName, which returns the value of a response header field by name. Header field names are case-insensitive.

Background. Response headers are available after ReadResponseHeader has read the status line and headers. Lookup by name is convenient when a specific header, such as Content-Type, is needed.

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Unicode C++

#include <CkRestW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkRestW rest;
    bool bTls = true;
    bool bAutoReconnect = true;
    success = rest.Connect(L"example.com",443,bTls,bAutoReconnect);
    if (success == false) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    success = rest.SendReqNoBody(L"GET",L"/api/items/123");
    if (success == false) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    int statusCode = rest.ReadResponseHeader();
    if (statusCode < 0) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  Return the value of a response header field by name.  Header field names are case-insensitive.
    const wchar_t *contentType = rest.responseHdrByName(L"Content-Type");
    if (rest.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    wprintf(L"Content-Type: %s\n",contentType);
    }