public static void FindServicePoint_PropertiesRoundtrip()
{
RemoteExecutor.Invoke(() =>
{
string address = "http://" + Guid.NewGuid().ToString("N");
BindIPEndPoint expectedBindIPEndPointDelegate = delegate { return(null); };
int expectedConnectionLeaseTimeout = 42;
int expectedConnectionLimit = 84;
bool expected100Continue = false;
int expectedMaxIdleTime = 200000;
int expectedReceiveBufferSize = 123;
bool expectedUseNagleAlgorithm = false;
ServicePoint sp1 = ServicePointManager.FindServicePoint(address, null);
sp1.BindIPEndPointDelegate = expectedBindIPEndPointDelegate;
sp1.ConnectionLeaseTimeout = expectedConnectionLeaseTimeout;
sp1.ConnectionLimit = expectedConnectionLimit;
sp1.Expect100Continue = expected100Continue;
sp1.MaxIdleTime = expectedMaxIdleTime;
sp1.ReceiveBufferSize = expectedReceiveBufferSize;
sp1.UseNagleAlgorithm = expectedUseNagleAlgorithm;
ServicePoint sp2 = ServicePointManager.FindServicePoint(address, null);
Assert.Same(expectedBindIPEndPointDelegate, sp2.BindIPEndPointDelegate);
Assert.Equal(expectedConnectionLeaseTimeout, sp2.ConnectionLeaseTimeout);
Assert.Equal(expectedConnectionLimit, sp2.ConnectionLimit);
Assert.Equal(expected100Continue, sp2.Expect100Continue);
Assert.Equal(expectedMaxIdleTime, sp2.MaxIdleTime);
Assert.Equal(expectedReceiveBufferSize, sp2.ReceiveBufferSize);
Assert.Equal(expectedUseNagleAlgorithm, sp2.UseNagleAlgorithm);
}).Dispose();
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// bindipendpoint.BeginInvoke(servicePoint, remoteEndPoint, retryCount, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this BindIPEndPoint bindipendpoint, ServicePoint servicePoint, IPEndPoint remoteEndPoint, Int32 retryCount, AsyncCallback callback)
{
if (bindipendpoint == null)
{
throw new ArgumentNullException("bindipendpoint");
}
return(bindipendpoint.BeginInvoke(servicePoint, remoteEndPoint, retryCount, callback, null));
}
public RebindingHandler(IEnumerable <IPAddress> adapterAddresses, HttpMessageHandler innerHandler = null)
: base(innerHandler ?? new WebRequestHandler())
{
var addresses = adapterAddresses.ToList();
if (!addresses.Any())
{
throw new ArgumentException();
}
var idx = 0;
bindHandler = (servicePoint, remoteEndPoint, retryCount) => {
var index = (idx++) % addresses.Count;
IPAddress adapterIpAddress = addresses[index];
return(new IPEndPoint(adapterIpAddress, 0));
};
}
public RebindingHandler(IEnumerable <IPAddress> adapterAddresses,
HttpMessageHandler innerHandler = null)
: base(innerHandler ?? new WebRequestHandler())
{
var addresses = adapterAddresses.ToList();
if (!addresses.Any())
{
throw new ArgumentException();
}
var idx = 0;
bindHandler = (servicePoint, remoteEndPoint, retryCount) => {
int i = Interlocked.Increment(ref idx);
uint i2 = unchecked ((uint)i);
int index = (int)(((long)i2) % addresses.Count);
IPAddress adapterIpAddress = addresses[index];
return(new IPEndPoint(adapterIpAddress, 0));
};
}
/// <summary>
/// sets the ip endpoint to use for the connections estabilished by this HttpClientHandler
/// </summary>
/// <param name="handler"></param>
/// <param name="biep"></param>
public static void SetServicePointOptions(this HttpClientHandler handler, BindIPEndPoint biep)
{
if (handler == null)
{
throw new ArgumentNullException("handler cannot be null");
}
var field = handler.GetType().GetField("_startRequest", BindingFlags.NonPublic | BindingFlags.Instance); // Fieldname has a _ due to being private
if (field == null)
{
throw new ArgumentNullException($"Field _startRequest not found in handler type {handler.GetType()}");
}
var startRequest = field.GetValue(handler) as Action <object>;
if (startRequest == null)
{
throw new ArgumentNullException("startRequest value is null");
}
Action <object> newStartRequest = obj =>
{
var webReqField = obj.GetType().GetField("webRequest", BindingFlags.NonPublic | BindingFlags.Instance);
if (webReqField == null)
{
throw new ArgumentNullException($"webRequest is not set on type {obj.GetType()}");
}
var webRequest = webReqField.GetValue(obj) as HttpWebRequest;
if (webRequest == null)
{
throw new ArgumentNullException($"webRequest is null");
}
webRequest.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(biep);
startRequest(obj); //call original action
};
field.SetValue(handler, newStartRequest); //replace original 'startRequest' with the one above
}
/// <summary>
/// 同步http的请求
/// </summary>
/// <param name="url">地址</param>
/// <param name="method">http方式</param>
/// <param name="val">追加的值（post）</param>
/// <param name="headers">头消息</param>
/// <param name="encoding">编码</param>
/// <param name="timeout">超时时间</param>
/// <param name="point">端口协议</param>
/// <returns></returns>
public static HttpWebResponse SyncHttp(string url, string method, string val, NameValueCollection headers, Encoding encoding, int timeout, BindIPEndPoint point)
{
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
req.Method = method;
req.ServicePoint.Expect100Continue = false;
req.ServicePoint.BindIPEndPointDelegate = point;
for (int i = 0; i < headers.AllKeys.Length; i++)
{
SetHeaderValue(req.Headers, headers.AllKeys[i], headers[headers.AllKeys[i]]);
}
if (string.IsNullOrEmpty(val) == false)
{
byte[] byteArray = encoding.GetBytes(val);
req.ContentLength = byteArray.Length;
Stream stream = req.GetRequestStream();
stream.Write(byteArray, 0, byteArray.Length);
stream.Close();
}
req.Timeout = timeout;
HttpWebResponse response = (HttpWebResponse)req.GetResponse();
return(response);
}
