public void SetCallbacks(CurlEasyHandle easyHandle)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.HeaderFunction, HeaderFunction);
LibCurl.EasySetOpt(easyHandle, CurlOption.ReadFunction, ReadFunction);
LibCurl.EasySetOpt(easyHandle, CurlOption.WriteFunction, WriteFunction);
LibCurl.EasySetOpt(easyHandle, CurlOption.ProgessFunction, ProgressFunction);
}
private void SetProxy(CurlEasyHandle easyHandle)
{
if (!(Proxy is null) && !Proxy.IsBypassed(RequestUri))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.Proxy, Proxy.ToProxyString(RequestUri));
}
}
private void SetCertificateValidationEnabled(CurlEasyHandle easyHandle)
{
if (!ServicePointManagerUtilities.CertificateValidationEnabled)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.SslVerifyHost, 0);
}
}
// Protected members
protected override bool ReleaseHandle()
{
if (!IsClosed)
{
LibCurl.EasyCleanup(this);
}
return(true);
}
private void SetCookies(CurlEasyHandle easyHandle)
{
string cookieHeader = CookieContainer?.GetCookieHeader(RequestUri);
if (!string.IsNullOrEmpty(cookieHeader))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.Cookie, cookieHeader);
}
}
protected override bool ReleaseHandle()
{
if (!IsClosed)
{
LibCurl.SListFreeAll(this);
}
return(true);
}
private void SetHeaders(CurlEasyHandle easyHandle, SList headers)
{
foreach (string headerName in Headers.AllKeys)
{
headers.Append($"{headerName}: {Headers[headerName]}");
}
LibCurl.EasySetOpt(easyHandle, CurlOption.HttpHeader, headers.Handle);
}
private void SetCredentials(CurlEasyHandle easyHandle)
{
if (!(Credentials is null))
{
string credentialString = Credentials.ToCredentialsString(RequestUri);
if (!string.IsNullOrEmpty(credentialString))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.UserPwd, credentialString);
}
}
}
private void GlobalInit()
{
lock (globalInitLock) {
// We shouldn't need to check if libcurl is initialized, because it's reference counted and can be called multiple times.
// However, repeated calls to curl_global_cleanup are crashing my program, so for the time being I'm not pairing it with this.
// It's up the user to call curl_global_cleanup once when they're done using it.
if (!LibCurl.IsInitialized) // Check so ref count will not be increased (only one call to curl_global_cleanup required after multiple requests)
{
LibCurl.GlobalInit();
}
}
}
private void SetHeaders(CurlEasyHandle easyHandle, SList headersList)
{
IEnumerable <IHttpHeader> headers = Headers.GetHeaders();
foreach (IHttpHeader header in headers)
{
headersList.Append($"{header.Name}: {header.Value}");
}
// Adding the Accept-Encoding header manually ensures that it's below the Accept header.
// See See https://sansec.io/research/http-header-order-is-important
string acceptEncoding = GetAcceptEncoding();
if (!string.IsNullOrWhiteSpace(acceptEncoding))
{
headersList.Append($"Accept-Encoding: {acceptEncoding}");
}
LibCurl.EasySetOpt(easyHandle, CurlOption.HttpHeader, headersList.Handle);
}
private void SetMethod(CurlEasyHandle easyHandle)
{
if (string.IsNullOrWhiteSpace(Method))
{
Method = "GET";
}
LibCurl.EasySetOpt(easyHandle, CurlOption.CustomRequest, Method);
if (Method.Equals("post", StringComparison.OrdinalIgnoreCase))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.Post, 1);
}
else if (Method.Equals("put", StringComparison.OrdinalIgnoreCase))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.Put, 1);
}
else if (Method.Equals("head", StringComparison.OrdinalIgnoreCase))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.NoBody, 1);
}
}
public void Append(string item)
{
handle = LibCurl.SListAppend(handle, item);
}
// Methods overidden from WebRequest
public override WebResponse GetResponse()
{
Stream responseStream = new ProducerConsumerStream(8192)
{
Blocking = true,
ReadTimeout = Timeout,
WriteTimeout = Timeout,
};
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = cancellationTokenSource.Token;
Task curlTask = Task.Factory.StartNew(() => {
try {
GlobalInit();
using (CurlEasyHandle easyHandle = LibCurl.EasyInit())
using (SList headers = new SList())
using (MemoryStream requestStream = new MemoryStream(GetRequestStream(validateMethod: false).ToArray())) {
LibCurl.EasySetOpt(easyHandle, CurlOption.Url, base.RequestUri.AbsoluteUri);
LibCurl.EasySetOpt(easyHandle, CurlOption.FollowLocation, AllowAutoRedirect ? 1 : 0);
LibCurl.EasySetOpt(easyHandle, CurlOption.MaxRedirs, MaximumAutomaticRedirections);
LibCurl.EasySetOpt(easyHandle, CurlOption.Timeout, base.Timeout);
if (AutomaticDecompression != DecompressionMethods.None)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.AcceptEncoding, GetAcceptEncoding());
}
if (File.Exists(options.CABundlePath))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.CAInfo, options.CABundlePath);
}
SetCertificateValidationEnabled(easyHandle);
SetCookies(easyHandle);
SetCredentials(easyHandle);
SetHeaders(easyHandle, headers);
SetHttpVersion(easyHandle);
SetKeepAlive(easyHandle);
SetMethod(easyHandle);
SetProxy(easyHandle);
// Execute the request.
using (ICurlDataCopier dataCopier = new CurlDataCopier(requestStream, responseStream, cancellationToken)) {
LibCurl.EasySetOpt(easyHandle, CurlOption.HeaderFunction, dataCopier.Header);
LibCurl.EasySetOpt(easyHandle, CurlOption.ReadFunction, dataCopier.Read);
LibCurl.EasySetOpt(easyHandle, CurlOption.WriteFunction, dataCopier.Write);
LibCurl.EasySetOpt(easyHandle, CurlOption.ProgessFunction, dataCopier.Progress);
CurlCode resultCode = LibCurl.EasyPerform(easyHandle);
if (resultCode != CurlCode.OK)
{
throw new CurlException(resultCode);
}
}
}
}
finally {
// Close the stream to indicate that we're done writing to it, unblocking readers.
responseStream.Close();
GlobalCleanup();
}
}, cancellationToken);
HaveResponse = true;
return(new CurlHttpWebResponse(this, responseStream, curlTask, cancellationTokenSource));
}
private void SetKeepAlive(CurlEasyHandle easyHandle)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.TcpKeepAlive, KeepAlive ? 1 : 0);
}
private void SetHttpVersion(CurlEasyHandle easyHandle)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.HttpVersion, (int)GetHttpVersion());
}
// Methods overidden from WebRequest
public override WebResponse GetResponse()
{
ConcurrentMemoryStream stream = new ConcurrentMemoryStream()
{
Blocking = true,
ReadTimeout = Timeout
};
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = cancellationTokenSource.Token;
Task curlTask = Task.Factory.StartNew(() => {
// We shouldn't need to check if libcurl is initialized, because it's reference counted and can be called multiple times.
// However, repeated calls to curl_global_cleanup are crashing my program, so for the time being I'm not pairing it with this.
// It's up the user to call curl_global_cleanup once when they're done using it.
if (!LibCurl.IsInitialized) // Check so ref count will not be increased (only one call to curl_global_cleanup required after multiple requests)
{
LibCurl.GlobalInit();
}
try {
using (CurlEasyHandle easyHandle = LibCurl.EasyInit())
using (SList headers = new SList())
using (MemoryStream postDataStream = new MemoryStream(GetRequestStream(validateMethod: false).ToArray())) {
CurlDataCopier dataCopier = new CurlDataCopier(stream, postDataStream, cancellationToken);
dataCopier.SetCallbacks(easyHandle);
LibCurl.EasySetOpt(easyHandle, CurlOption.Url, RequestUri.AbsoluteUri);
LibCurl.EasySetOpt(easyHandle, CurlOption.FollowLocation, AllowAutoRedirect ? 1 : 0);
LibCurl.EasySetOpt(easyHandle, CurlOption.MaxRedirs, MaximumAutomaticRedirections);
LibCurl.EasySetOpt(easyHandle, CurlOption.Timeout, Timeout);
LibCurl.EasySetOpt(easyHandle, CurlOption.HttpVersion, (int)GetHttpVersion());
if (AutomaticDecompression != DecompressionMethods.None)
{
LibCurl.EasySetOpt(easyHandle, CurlOption.AcceptEncoding, GetAcceptEncoding());
}
LibCurl.EasySetOpt(easyHandle, CurlOption.TcpKeepAlive, KeepAlive ? 1 : 0);
if (File.Exists(LibCurl.CABundlePath))
{
LibCurl.EasySetOpt(easyHandle, CurlOption.CaInfo, LibCurl.CABundlePath);
}
SetCookies(easyHandle);
SetCredentials(easyHandle);
SetHeaders(easyHandle, headers);
SetMethod(easyHandle);
SetProxy(easyHandle);
// Execute the request.
LibCurl.EasyPerform(easyHandle);
}
}
finally {
// Close the stream to indicate that we're done writing to it, unblocking readers.
stream.Close();
//LibCurl.GlobalCleanup();
}
}, cancellationToken);
HaveResponse = true;
return(new LibCurlHttpWebResponse(this, stream, cancellationTokenSource));
}