C

Example: Http.HttpJson method - Send a POST with JSON Body

See more HTTP Examples

Demonstrates how to call the HttpJson method, which sends an HTTP POST with a JSON body. This example sends the following request:

POST /echo_request_body.asp HTTP/1.1
Host: chilkatsoft.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/json
Content-Length: 26

{"greeting":"Hello World"}

Also see: Chilkat Http Default and Auto-Filled Headers

C

#include <C_CkHttp.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkJsonObject json;
    const char *url;
    HCkHttpResponse resp;

    success = FALSE;

    http = CkHttp_Create();
    success = FALSE;

    json = CkJsonObject_Create();

    //  Build the following JSON:  {"greeting":"Hello World"}
    CkJsonObject_UpdateString(json,"greeting","Hello World");

    //  This URL echoes the contents of the request body, letting us view it.
    url = "https://chilkatsoft.com/echo_request_body.asp";

    //  Send a POST with the JSON in the HTTP request body.
    resp = CkHttpResponse_Create();
    success = CkHttp_HttpJson(http,"POST",url,json,"application/json",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        CkHttpResponse_Dispose(resp);
        return;
    }

    printf("Response Status Code: %d\n",CkHttpResponse_getStatusCode(resp));

    //  Examine the request we sent.
    //  The LastHeader property stores the HTTP request header of the most recent request sent,
    //  and in this instance, the response body mirrors the request body.
    printf("%s\n",CkHttp_lastHeader(http));
    printf("%s\n",CkHttpResponse_bodyStr(resp));

    //  Output:

    //  POST /echo_request_body.asp HTTP/1.1
    //  Host: chilkatsoft.com
    //  Accept: */*
    //  Accept-Encoding: gzip
    //  Content-Type: application/json
    //  Content-Length: 26
    //  
    //  {"greeting":"Hello World"}


    CkHttp_Dispose(http);
    CkJsonObject_Dispose(json);
    CkHttpResponse_Dispose(resp);

    }