Example HTTP POST with C# and sockets

try
            {

                LOG = "Requesting..";

                TcpClient client = new TcpClient(HOST, 80);
                NetworkStream stream = client.GetStream();




                List<string> HEADER = new List<string>();
                HEADER.Add(HTTP_COMMAND);

                HEADER.Add("Host: " + HOST);

                if (USER_AGENT.Length > 0)
                {
                    HEADER.Add("User-Agent: " + USER_AGENT);
                }

                if (ACCEPT.Length > 0)
                {
                    HEADER.Add("Accept: " + ACCEPT);
                }

                if (ACCEPT_ENCODING.Length > 0)
                {
                    HEADER.Add("Accept-Encoding: " + ACCEPT_ENCODING);
                }

                if (ACCEPT_CHARSET.Length > 0)
                {
                    HEADER.Add("Accept-Charset: " + ACCEPT_CHARSET);
                }

                if (ACCEPT_LANGUAGE.Length > 0)
                {
                    HEADER.Add("Accept-Language: " + ACCEPT_LANGUAGE);
                }


                string[] tmpExtra = Regex.Split(EXTRA_FIELDS, "\n");

                for (int z = 0; z < tmpExtra.Length; z++)
                {
                    if (tmpExtra[z].Trim().Length > 0)
                    {
                        HEADER.Add(tmpExtra[z]);
                    }
                }




                if (REFERER.Length > 0)
                {
                    HEADER.Add("Referer: " + REFERER);
                }

                if(COOKIES.Length > 0){
                    HEADER.Add("Cookies: " + COOKIES);
                }


                HEADER.Add("Connection: Keep-Alive");

                if (HTTP_COMMAND.Contains("POST") == true)
                {
                    CONTENT = "\r\n" + CONTENT;
                    HEADER.Add("Content-Type: " + CONTENT_TYPE);
                    HEADER.Add("Content-Length: " + CONTENT.Length);
                    HEADER.Add(CONTENT);
                }

                string dataToSend = "";
                for (int h = 0; h < HEADER.Count; h++)
                {
                    dataToSend = dataToSend + HEADER[h] + "\r\n";
                }
                dataToSend = dataToSend + "\r\n";

                byte[] send = Encoding.ASCII.GetBytes(dataToSend);
                stream.Write(send, 0, send.Length);
                stream.Flush();
                byte[] bytes = new byte[client.ReceiveBufferSize];
                int count = stream.Read(bytes, 0, (int)client.ReceiveBufferSize);
                String data = Encoding.ASCII.GetString(bytes);
                char[] unused = { (char)data[count] };
                LOG = data.TrimEnd(unused);
                stream.Close();
                client.Close();


                
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                //  console("request '" + url + "' - " + ex.Message.ToString());
            }