private void WriteKeys(Stream requestStream, CaptchaConfig config, byte[] boundarybytes)
{
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
NameValueCollection nvc = new NameValueCollection {
{ "key", _apiKey }
};
if (config != null)
{
nvc.Add(config.GetParameters());
}
foreach (string key in nvc.Keys)
{
requestStream.Write(boundarybytes, 0, boundarybytes.Length);
string formitem = string.Format(formdataTemplate, key, nvc[key]);
byte[] formitembytes = Encoding.UTF8.GetBytes(formitem);
requestStream.Write(formitembytes, 0, formitembytes.Length);
}
requestStream.Write(boundarybytes, 0, boundarybytes.Length);
}
/// <summary>
/// Загрузить файл капчи
/// </summary>
/// <param name="fileName">уть к файлу с капчей</param>
/// <param name="config">Параметры</param>
/// <returns></returns>
public string UploadCaptchaFile(string fileName, CaptchaConfig config)
{
string url = string.Format("{0}/in.php", host);
NameValueCollection nvc = new NameValueCollection();
nvc.Add("key", api_key);
if (config != null)
{
nvc.Add(config.GetParameters());
}
string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.Method = "POST";
request.KeepAlive = true;
request.Credentials = System.Net.CredentialCache.DefaultCredentials;
Stream requestStream = request.GetRequestStream();
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
foreach (string key in nvc.Keys)
{
requestStream.Write(boundarybytes, 0, boundarybytes.Length);
string formitem = string.Format(formdataTemplate, key, nvc[key]);
byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
requestStream.Write(formitembytes, 0, formitembytes.Length);
}
requestStream.Write(boundarybytes, 0, boundarybytes.Length);
string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
string header = string.Format(headerTemplate, "file", fileName, "image/jpeg");
byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
requestStream.Write(headerbytes, 0, headerbytes.Length);
FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, bytesRead);
}
fileStream.Close();
byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
requestStream.Write(trailer, 0, trailer.Length);
requestStream.Close();
using (WebResponse response = request.GetResponse())
{
Stream responseStream = response.GetResponseStream();
StreamReader responseReader = new StreamReader(responseStream);
return(ParseAnswer(responseReader.ReadToEnd()));
}
}