Sample code for 30+ languages & platforms
C

Example: Http.HttpFile method

Shows how to use the HttpFile method to send an HTTP POST request with the contents of a file as the request body. The example sends the following request:
POST /api/v1/sites/123/deploys HTTP/1.1
Host: example.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/zip
Content-Length: 123456

[binary data bytes of data.zip]

Also see: Chilkat Http Default and Auto-Filled Headers

Chilkat C Downloads

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

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

    success = FALSE;

    http = CkHttp_Create();

    localFilePath = "C:/example/zips/data.zip";
    url = "https://example.com/api/v1/sites/123/deploys";

    //  Send a POST with the contents of the file in the binary HTTP request body.
    resp = CkHttpResponse_Create();
    success = CkHttp_HttpFile(http,"POST",url,localFilePath,"application/zip",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkHttpResponse_Dispose(resp);
        return;
    }

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


    CkHttp_Dispose(http);
    CkHttpResponse_Dispose(resp);

    }