嵌入式环境中，轻量级的 http 客户端 介绍： libghttp 其基本使用如下：

ghttp_request *request = ghttp_request_new();
ghttp_set_type(request,ghttp_type_post);
ghttp_set_header(request, http_hdr_Connection, "close");
ghttp_set_header(request, http_hdr_Content_Type, "application/json");
ghttp_set_body(request,data,len);
ghttp_prepare(request);
ghttp_status req_status = ghttp_process(request);
if (req_status == ghttp_error)
{
LDS_LOG_E("ghttp_process err:%d, %s\n", req_status, ghttp_get_error(request));
}
fwrite(ghttp_get_body(request), ghttp_get_body_len(request), 1, stdout);
ghttp_clean(request);
ghttp_request_destroy(request);