Sample code for 30+ languages & platforms
C

Example: Http.HttpSb method

Shows how to use the HttpSb method to send an HTTP POST request with a StringBuilder as the request body. The 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

Chilkat C Downloads

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

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

    success = FALSE;

    http = CkHttp_Create();
    success = FALSE;

    sb = CkStringBuilder_Create();
    CkStringBuilder_Append(sb,"{\"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 contents of the StringBuilder in the HTTP request body.
    resp = CkHttpResponse_Create();
    success = CkHttp_HttpSb(http,"POST",url,sb,"utf-8","application/json",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sb);
        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);
    CkStringBuilder_Dispose(sb);
    CkHttpResponse_Dispose(resp);

    }