private static void Main(string[] args)
{
try
{
Curl.GlobalInit(CurlInitFlag.All);
using (var curl = new CurlEasy())
{
/* This is the URL for your mailserver */
curl.Url = "smtp://*****:*****@example.org>");
/* Add two recipients, in this particular case they correspond to
* the To: and Cc: addressees in the header, but they could be any
* kind of recipient. */
using (var recipients = new CurlSlist())
{
recipients.Append("<*****@*****.**>");
recipients.Append("<*****@*****.**>");
curl.SetOpt(CurlOption.MailRcpt, recipients);
/* We're using a callback function to specify the payload (the
* headers and body of the message). You could just use the
* ReadData option to specify a FILE pointer to read from. */
curl.ReadFunction = PayloadSource;
curl.ReadData = new UploadContext();
curl.Upload = true;
var res = curl.Perform();
if (res != CurlCode.Ok)
{
Console.WriteLine("CurlEasy.Perform() failed: " + res);
}
}
/* curl won't send the QUIT command until you call cleanup, so you should be
* able to re-use this connection for additional messages (setting
* CURLOPT_MAIL_FROM and CURLOPT_MAIL_RCPT as required, and calling
* Perform() again. It may not be a good idea to keep the
* connection open for a very long time though (more than a few minutes may
* result in the server timing out the connection), and you do want to clean
* up in the end.
*/
}
Curl.GlobalCleanup();
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
Console.ReadLine();
}
private CurlSlist SerializeHeaders(HttpRequest request)
{
if (!request.Headers.ContainsKey("Accept-Encoding"))
{
request.Headers.Add("Accept-Encoding", "gzip");
}
if (request.Headers.ContentType == null)
{
request.Headers.ContentType = string.Empty;
}
var curlHeaders = new CurlSlist();
foreach (var header in request.Headers)
{
curlHeaders.Append(header.Key + ": " + header.Value.ToString());
}
return curlHeaders;
}
public static CurlResponse PerformCurl(CurlRequest curlRequest)
{
lock (instance)
{
var headerBuffers = new List<byte[]>();
var contentBuffers = new List<byte[]>();
using (var easy = new CurlEasy())
{
easy.Url = curlRequest.Url;
easy.BufferSize = 64 * 1024;
easy.UserAgent = BrowserUtil.ChromeUserAgent;
easy.FollowLocation = false;
easy.ConnectTimeout = 20;
if(curlRequest.Headers != null)
{
CurlSlist curlHeaders = new CurlSlist();
foreach (var header in curlRequest.Headers)
{
curlHeaders.Append(header.Key + ": " + header.Value);
}
easy.SetOpt(CurlOption.HttpHeader, curlHeaders);
}
easy.WriteFunction = (byte[] buf, int size, int nmemb, object data) =>
{
contentBuffers.Add(buf);
return size * nmemb;
};
easy.HeaderFunction = (byte[] buf, int size, int nmemb, object extraData) =>
{
headerBuffers.Add(buf);
return size * nmemb;
};
if (!string.IsNullOrEmpty(curlRequest.Cookies))
easy.Cookie = curlRequest.Cookies;
if (!string.IsNullOrEmpty(curlRequest.Referer))
easy.Referer = curlRequest.Referer;
if (curlRequest.Method == HttpMethod.Post)
{
if (!string.IsNullOrEmpty(curlRequest.RawPOSTDdata))
{
easy.Post = true;
easy.PostFields = curlRequest.RawPOSTDdata;
easy.PostFieldSize = Encoding.UTF8.GetByteCount(curlRequest.RawPOSTDdata);
}
else
{
easy.Post = true;
var postString = StringUtil.PostDataFromDict(curlRequest.PostData);
easy.PostFields = postString;
easy.PostFieldSize = Encoding.UTF8.GetByteCount(postString);
}
}
if (Startup.DoSSLFix == true)
{
// http://stackoverflow.com/questions/31107851/how-to-fix-curl-35-cannot-communicate-securely-with-peer-no-common-encryptio
// https://git.fedorahosted.org/cgit/mod_nss.git/plain/docs/mod_nss.html
easy.SslCipherList = SSLFix.CipherList;
easy.FreshConnect = true;
easy.ForbidReuse = true;
}
if (Startup.IgnoreSslErrors == true)
{
easy.SetOpt(CurlOption.SslVerifyhost, false);
easy.SetOpt(CurlOption.SslVerifyPeer, false);
}
if (Startup.ProxyConnection != null)
{
easy.SetOpt(CurlOption.Proxy, Startup.ProxyConnection);
}
easy.Perform();
if (easy.LastErrorCode != CurlCode.Ok)
{
var message = "Error " + easy.LastErrorCode.ToString() + " " + easy.LastErrorDescription + " " + easy.ErrorBuffer;
if (null != OnErrorMessage)
OnErrorMessage(message);
else
Console.WriteLine(message);
}
}
var headerBytes = Combine(headerBuffers.ToArray());
var headerString = Encoding.UTF8.GetString(headerBytes);
if (Startup.ProxyConnection != null)
{
var firstcrlf = headerString.IndexOf("\r\n\r\n");
var secondcrlf = headerString.IndexOf("\r\n\r\n", firstcrlf + 1);
if (secondcrlf > 0)
{
headerString = headerString.Substring(firstcrlf + 4, secondcrlf - (firstcrlf));
}
}
var headerParts = headerString.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
var headers = new List<string[]>();
var headerCount = 0;
HttpStatusCode status = HttpStatusCode.NotImplemented;
var cookieBuilder = new StringBuilder();
var cookies = new List<Tuple<string, string>>();
foreach (var headerPart in headerParts)
{
if (headerCount == 0)
{
var split = headerPart.Split(' ');
if (split.Length < 2)
throw new Exception("HTTP Header missing");
var responseCode = int.Parse(headerPart.Split(' ')[1]);
status = (HttpStatusCode)responseCode;
}
else
{
var keyVal = headerPart.Split(new char[] { ':' }, 2);
if (keyVal.Length > 1)
{
var key = keyVal[0].ToLower().Trim();
var value = keyVal[1].Trim();
if (key == "set-cookie")
{
var nameSplit = value.IndexOf('=');
if (nameSplit > -1) {
cookies.Add(new Tuple<string, string>(value.Substring(0, nameSplit), value.Substring(0, value.IndexOf(';') + 1)));
}
}
else
{
headers.Add(new[] { key, value });
}
}
}
headerCount++;
}
foreach (var cookieGroup in cookies.GroupBy(c => c.Item1))
{
cookieBuilder.AppendFormat("{0} ", cookieGroup.Last().Item2);
}
// add some debug output to track down the problem causing people getting InternalServerError results
if (status == HttpStatusCode.NotImplemented || status == HttpStatusCode.InternalServerError)
{
try
{
OnErrorMessage("got NotImplemented/InternalServerError");
OnErrorMessage("request.Method: " + curlRequest.Method);
OnErrorMessage("request.Url: " + curlRequest.Url);
OnErrorMessage("request.Cookies: " + curlRequest.Cookies);
OnErrorMessage("request.Referer: " + curlRequest.Referer);
OnErrorMessage("request.RawPOSTDdata: " + curlRequest.RawPOSTDdata);
OnErrorMessage("cookies: "+ cookieBuilder.ToString().Trim());
OnErrorMessage("headerString:\n" + headerString);
foreach (var headerPart in headerParts)
{
OnErrorMessage("headerParts: "+headerPart);
}
}
catch (Exception ex)
{
OnErrorMessage(string.Format("CurlHelper: error while handling NotImplemented/InternalServerError:\n{0}", ex));
}
}
var contentBytes = Combine(contentBuffers.ToArray());
var curlResponse = new CurlResponse(headers, contentBytes, status, cookieBuilder.ToString().Trim());
return curlResponse;
}
}
private CurlSlist SerializeHeaders(HttpWebRequest webRequest)
{
if (webRequest.SendChunked)
{
throw new NotSupportedException("Chunked transfer is not supported");
}
if (webRequest.ContentLength > 0)
{
webRequest.Headers.Add("Content-Length", webRequest.ContentLength.ToString());
}
if (webRequest.AutomaticDecompression.HasFlag(DecompressionMethods.GZip))
{
if (webRequest.AutomaticDecompression.HasFlag(DecompressionMethods.Deflate))
{
webRequest.Headers.Add("Accept-Encoding", "gzip, deflate");
}
else
{
webRequest.Headers.Add("Accept-Encoding", "gzip");
}
}
else
{
if (webRequest.AutomaticDecompression.HasFlag(DecompressionMethods.Deflate))
{
webRequest.Headers.Add("Accept-Encoding", "deflate");
}
}
var curlHeaders = new CurlSlist();
for (int i = 0; i < webRequest.Headers.Count; i++)
{
curlHeaders.Append(webRequest.Headers.GetKey(i) + ": " + webRequest.Headers.Get(i));
}
curlHeaders.Append("Content-Type: " + webRequest.ContentType ?? string.Empty);
return curlHeaders;
}