mirror of
https://github.com/xcp-ng/xenadmin.git
synced 2024-12-20 15:36:03 +01:00
0ad2e19458
Improved the ReadHttpHeaders function, by making sure that a chunk is read fully from the stream (the number of bytes read by the Stream.Read function can be less than the number of bytes requested, so we need to continue reading until the required number of bytes is read) Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
741 lines
32 KiB
C#
741 lines
32 KiB
C#
/*
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* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1) Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Net.Security;
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using System.Security.Authentication;
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using System.Security.Cryptography;
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using System.Security.Cryptography.X509Certificates;
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using System.Runtime.Serialization;
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namespace XenAPI
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{
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public partial class HTTP
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{
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[Serializable]
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public class TooManyRedirectsException : Exception
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{
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private readonly int redirect;
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private readonly Uri uri;
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public TooManyRedirectsException(int redirect, Uri uri)
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{
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this.redirect = redirect;
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this.uri = uri;
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}
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public TooManyRedirectsException() : base() { }
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public TooManyRedirectsException(string message) : base(message) { }
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public TooManyRedirectsException(string message, Exception exception) : base(message, exception) { }
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protected TooManyRedirectsException(SerializationInfo info, StreamingContext context)
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: base(info, context)
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{
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redirect = info.GetInt32("redirect");
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uri = (Uri)info.GetValue("uri", typeof(Uri));
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}
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public override void GetObjectData(SerializationInfo info, StreamingContext context)
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{
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if (info == null)
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{
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throw new ArgumentNullException("info");
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}
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info.AddValue("redirect", redirect);
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info.AddValue("uri", uri, typeof(Uri));
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base.GetObjectData(info, context);
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}
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}
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[Serializable]
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public class BadServerResponseException : Exception
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{
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public BadServerResponseException() : base() { }
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public BadServerResponseException(string message) : base(message) { }
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public BadServerResponseException(string message, Exception exception) : base(message, exception) { }
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protected BadServerResponseException(SerializationInfo info, StreamingContext context) : base(info, context) { }
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}
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[Serializable]
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public class CancelledException : Exception
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{
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public CancelledException() : base() { }
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public CancelledException(string message) : base(message) { }
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public CancelledException(string message, Exception exception) : base(message, exception) { }
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protected CancelledException(SerializationInfo info, StreamingContext context) : base(info, context) { }
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}
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[Serializable]
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public class ProxyServerAuthenticationException : Exception
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{
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public ProxyServerAuthenticationException() : base() { }
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public ProxyServerAuthenticationException(string message) : base(message) { }
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public ProxyServerAuthenticationException(string message, Exception exception) : base(message, exception) { }
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protected ProxyServerAuthenticationException(SerializationInfo info, StreamingContext context) : base(info, context) { }
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}
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public delegate bool FuncBool();
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public delegate void UpdateProgressDelegate(int percent);
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public delegate void DataCopiedDelegate(long bytes);
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// Size of byte buffer used for GETs and PUTs
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// (not the socket rx buffer)
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public const int BUFFER_SIZE = 32 * 1024;
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public const int MAX_REDIRECTS = 10;
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public const int DEFAULT_HTTPS_PORT = 443;
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public enum ProxyAuthenticationMethod
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{
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Basic = 0,
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Digest = 1
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}
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/// <summary>
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/// The authentication scheme to use for authenticating to a proxy server.
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/// Defaults to Digest.
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/// </summary>
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public static ProxyAuthenticationMethod CurrentProxyAuthenticationMethod = ProxyAuthenticationMethod.Digest;
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#region Helper functions
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private static void WriteLine(String txt, Stream stream)
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{
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byte[] bytes = System.Text.Encoding.ASCII.GetBytes(String.Format("{0}\r\n", txt));
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stream.Write(bytes, 0, bytes.Length);
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}
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private static void WriteLine(Stream stream)
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{
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WriteLine("", stream);
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}
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// Stream.ReadByte() is used because using StreamReader in its place causes the reading to become stuck,
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// as it seems the Stream object has trouble recognizing the end of the stream. This seems to be a common
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// problem, of which a common solution is to read each byte until an EndOfStreamException is thrown, as is
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// done here.
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private static string ReadLine(Stream stream)
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{
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System.Text.StringBuilder result = new StringBuilder();
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while (true)
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{
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int b = stream.ReadByte();
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if (b == -1)
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throw new EndOfStreamException();
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char c = Convert.ToChar(b);
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result.Append(c);
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if (c == '\n')
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return result.ToString();
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}
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}
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/// <summary>
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/// Read HTTP headers, doing any redirects as necessary
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/// </summary>
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/// <param name="stream"></param>
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/// <returns>True if a redirect has occurred - headers will need to be resent.</returns>
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private static bool ReadHttpHeaders(ref Stream stream, IWebProxy proxy, bool nodelay, int timeout_ms, List<string> headers = null)
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{
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// read headers/fields
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string line = ReadLine(stream), initialLine = line, transferEncodingField = null;
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if (string.IsNullOrEmpty(initialLine)) // sanity check
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return false;
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if (headers == null)
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headers = new List<string>();
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while (!string.IsNullOrWhiteSpace(line)) // IsNullOrWhiteSpace also checks for empty string
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{
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line = line.TrimEnd('\r', '\n');
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headers.Add(line);
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if (line == "Transfer-Encoding: Chunked")
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transferEncodingField = line;
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line = ReadLine(stream);
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}
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// read chunks
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string entityBody = "";
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if (!string.IsNullOrEmpty(transferEncodingField))
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{
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int lastChunkSize = -1;
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do
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{
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// read chunk size
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string chunkSizeStr = ReadLine(stream);
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chunkSizeStr = chunkSizeStr.TrimEnd('\r', '\n');
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int chunkSize = 0;
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int.TryParse(chunkSizeStr, System.Globalization.NumberStyles.HexNumber,
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System.Globalization.CultureInfo.InvariantCulture, out chunkSize);
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// read <chunkSize> number of bytes from the stream
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int totalNumberOfBytesRead = 0;
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int numberOfBytesRead;
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byte[] bytes = new byte[chunkSize];
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do
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{
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numberOfBytesRead = stream.Read(bytes, totalNumberOfBytesRead, chunkSize - totalNumberOfBytesRead);
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totalNumberOfBytesRead += numberOfBytesRead;
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} while (numberOfBytesRead > 0 && totalNumberOfBytesRead < chunkSize);
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string str = System.Text.Encoding.ASCII.GetString(bytes);
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string[] split = str.Split(new string[] {"\r\n"}, StringSplitOptions.RemoveEmptyEntries);
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headers.AddRange(split);
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entityBody += str;
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line = ReadLine(stream); // empty line in the end of chunk
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lastChunkSize = chunkSize;
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} while (lastChunkSize != 0);
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entityBody = entityBody.TrimEnd('\r', '\n');
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headers.Add(entityBody); // keep entityBody if it's needed for Digest authentication (when qop="auth-int")
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}
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else
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{
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// todo: handle other transfer types, in case "Transfer-Encoding: Chunked" isn't used
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}
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// handle server response
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int code = getResultCode(initialLine);
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switch (code)
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{
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case 407: // authentication error; caller must handle this case
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case 200:
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break;
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case 302:
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string url = "";
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foreach (string header in headers)
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{
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if (header.StartsWith("Location: "))
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{
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url = header.Substring(10);
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break;
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}
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}
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Uri redirect = new Uri(url.Trim());
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stream.Close();
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stream = ConnectStream(redirect, proxy, nodelay, timeout_ms);
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return true; // headers need to be sent again
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default:
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stream.Close();
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throw new BadServerResponseException(string.Format("Received error code {0} from the server", initialLine));
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}
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return false;
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}
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private static int getResultCode(string line)
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{
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string[] bits = line.Split(new char[] { ' ' });
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return (bits.Length < 2 ? 0 : Int32.Parse(bits[1]));
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}
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public static bool UseSSL(Uri uri)
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{
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return uri.Scheme == "https" || uri.Port == DEFAULT_HTTPS_PORT;
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}
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private static bool ValidateServerCertificate(
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object sender,
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X509Certificate certificate,
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X509Chain chain,
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SslPolicyErrors sslPolicyErrors)
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{
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return true;
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}
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/// <summary>
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/// Returns a secure MD5 hash of the given input string.
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/// </summary>
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/// <param name="str">The string to hash.</param>
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/// <returns>The secure hash as a hex string.</returns>
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public static string MD5Hash(string str)
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{
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MD5 hasher = MD5.Create();
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ASCIIEncoding enc = new ASCIIEncoding();
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byte[] bytes = enc.GetBytes(str);
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byte[] hash = hasher.ComputeHash(bytes);
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return BitConverter.ToString(hash).Replace("-", "").ToLower();
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}
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public static long CopyStream(Stream inStream, Stream outStream,
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DataCopiedDelegate progressDelegate, FuncBool cancellingDelegate)
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{
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long bytesWritten = 0;
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byte[] buffer = new byte[BUFFER_SIZE];
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DateTime lastUpdate = DateTime.Now;
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while (cancellingDelegate == null || !cancellingDelegate())
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{
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int bytesRead = inStream.Read(buffer, 0, buffer.Length);
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if (bytesRead == 0)
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break;
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outStream.Write(buffer, 0, bytesRead);
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bytesWritten += bytesRead;
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if (progressDelegate != null &&
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DateTime.Now - lastUpdate > TimeSpan.FromMilliseconds(500))
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{
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progressDelegate(bytesWritten);
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lastUpdate = DateTime.Now;
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}
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}
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if (cancellingDelegate != null && cancellingDelegate())
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throw new CancelledException();
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if (progressDelegate != null)
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progressDelegate(bytesWritten);
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return bytesWritten;
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}
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/// <summary>
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/// Build a URI from a hostname, a path, and some query arguments
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/// </summary>
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/// <param name="args">An even-length array, alternating argument names and values</param>
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/// <returns></returns>
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public static Uri BuildUri(string hostname, string path, params object[] args)
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{
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// The last argument may be an object[] in its own right, in which case we need
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// to flatten the array.
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List<object> flatargs = new List<object>();
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foreach (object arg in args)
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{
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if (arg is IEnumerable<object>)
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flatargs.AddRange((IEnumerable<object>)arg);
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else
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flatargs.Add(arg);
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}
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UriBuilder uri = new UriBuilder();
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uri.Scheme = "https";
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uri.Port = DEFAULT_HTTPS_PORT;
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uri.Host = hostname;
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uri.Path = path;
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StringBuilder query = new StringBuilder();
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for (int i = 0; i < flatargs.Count - 1; i += 2)
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{
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string kv;
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// If the argument is null, don't include it in the URL
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if (flatargs[i + 1] == null)
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continue;
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// bools are special because some xapi calls use presence/absence and some
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// use "b=true" (not "True") and "b=false". But all accept "b=true" or absent.
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if (flatargs[i + 1] is bool)
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{
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if (!((bool)flatargs[i + 1]))
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continue;
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kv = flatargs[i] + "=true";
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}
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else
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kv = flatargs[i] + "=" + Uri.EscapeDataString(flatargs[i + 1].ToString());
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if (query.Length != 0)
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query.Append('&');
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query.Append(kv);
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}
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uri.Query = query.ToString();
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return uri.Uri;
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}
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private static string GetPartOrNull(string str, int partIndex)
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{
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string[] parts = str.Split(new char[] { ' ' }, partIndex + 2, StringSplitOptions.RemoveEmptyEntries);
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return partIndex < parts.Length - 1 ? parts[partIndex] : null;
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}
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#endregion
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private static NetworkStream ConnectSocket(Uri uri, bool nodelay, int timeout_ms)
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{
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AddressFamily addressFamily = uri.HostNameType == UriHostNameType.IPv6
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? AddressFamily.InterNetworkV6
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: AddressFamily.InterNetwork;
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Socket socket =
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new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
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socket.NoDelay = nodelay;
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//socket.ReceiveBufferSize = 64 * 1024;
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socket.ReceiveTimeout = timeout_ms;
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socket.SendTimeout = timeout_ms;
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socket.Connect(uri.Host, uri.Port);
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return new NetworkStream(socket, true);
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}
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/// <summary>
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/// This function will connect a stream to a uri (host and port),
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/// negotiating proxies and SSL
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/// </summary>
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/// <param name="uri"></param>
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/// <param name="timeout_ms">Timeout, in ms. 0 for no timeout.</param>
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/// <returns></returns>
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public static Stream ConnectStream(Uri uri, IWebProxy proxy, bool nodelay, int timeout_ms)
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{
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IMockWebProxy mockProxy = proxy != null ? proxy as IMockWebProxy : null;
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if (mockProxy != null)
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return mockProxy.GetStream(uri);
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Stream stream;
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bool useProxy = proxy != null && !proxy.IsBypassed(uri);
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if (useProxy)
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{
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Uri proxyURI = proxy.GetProxy(uri);
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stream = ConnectSocket(proxyURI, nodelay, timeout_ms);
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}
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else
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{
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stream = ConnectSocket(uri, nodelay, timeout_ms);
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}
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try
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{
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if (useProxy)
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{
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string line = String.Format("CONNECT {0}:{1} HTTP/1.0", uri.Host, uri.Port);
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WriteLine(line, stream);
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WriteLine(stream);
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List<string> initialResponse = new List<string>();
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ReadHttpHeaders(ref stream, proxy, nodelay, timeout_ms, initialResponse);
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AuthenticateProxy(ref stream, uri, proxy, nodelay, timeout_ms, initialResponse, line);
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}
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if (UseSSL(uri))
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{
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SslStream sslStream = new SslStream(stream, false,
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new RemoteCertificateValidationCallback(ValidateServerCertificate), null);
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sslStream.AuthenticateAsClient("", null, SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12, true);
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stream = sslStream;
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}
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return stream;
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}
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catch
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{
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stream.Close();
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throw;
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}
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}
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private static void AuthenticateProxy(ref Stream stream, Uri uri, IWebProxy proxy, bool nodelay, int timeout_ms, List<string> initialResponse, string header)
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{
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// perform authentication only if proxy requires it
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List<string> fields = initialResponse.FindAll(str => str.StartsWith("Proxy-Authenticate:"));
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if (fields.Count > 0)
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{
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// clean up (if initial server response specifies "Proxy-Connection: Close" then stream cannot be re-used)
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string field = initialResponse.Find(str => str.StartsWith("Proxy-Connection: Close", StringComparison.CurrentCultureIgnoreCase));
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if (!string.IsNullOrEmpty(field))
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{
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stream.Close();
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Uri proxyURI = proxy.GetProxy(uri);
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stream = ConnectSocket(proxyURI, nodelay, timeout_ms);
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}
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if (proxy.Credentials == null)
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throw new BadServerResponseException(string.Format("Received error code {0} from the server", initialResponse[0]));
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NetworkCredential credentials = proxy.Credentials.GetCredential(uri, null);
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string basicField = fields.Find(str => str.StartsWith("Proxy-Authenticate: Basic"));
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string digestField = fields.Find(str => str.StartsWith("Proxy-Authenticate: Digest"));
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if (CurrentProxyAuthenticationMethod == ProxyAuthenticationMethod.Basic)
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{
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if (string.IsNullOrEmpty(basicField))
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throw new ProxyServerAuthenticationException("Basic authentication scheme is not supported/enabled by the proxy server.");
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string authenticationFieldReply = string.Format("Proxy-Authorization: Basic {0}",
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Convert.ToBase64String(Encoding.UTF8.GetBytes(credentials.UserName + ":" + credentials.Password)));
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WriteLine(header, stream);
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WriteLine(authenticationFieldReply, stream);
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WriteLine(stream);
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}
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else if (CurrentProxyAuthenticationMethod == ProxyAuthenticationMethod.Digest)
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{
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if (string.IsNullOrEmpty(digestField))
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throw new ProxyServerAuthenticationException("Digest authentication scheme is not supported/enabled by the proxy server.");
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string authenticationFieldReply = string.Format(
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"Proxy-Authorization: Digest username=\"{0}\", uri=\"{1}:{2}\"",
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credentials.UserName, uri.Host, uri.Port);
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string directiveString = digestField.Substring(27, digestField.Length - 27);
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string[] directives = directiveString.Split(new string[] { ", ", "\"" }, StringSplitOptions.RemoveEmptyEntries);
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string algorithm = null; // optional
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string opaque = null; // optional
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string qop = null; // optional
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string realm = null;
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string nonce = null;
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for (int i = 0; i < directives.Length; ++i)
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{
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switch (directives[i])
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{
|
|
case "stale=":
|
|
if (directives[++i].ToLower() == "true")
|
|
throw new ProxyServerAuthenticationException("Stale nonce in Digest authentication attempt.");
|
|
break;
|
|
case "realm=":
|
|
authenticationFieldReply += string.Format(", {0}\"{1}\"", directives[i], directives[++i]);
|
|
realm = directives[i];
|
|
break;
|
|
case "nonce=":
|
|
authenticationFieldReply += string.Format(", {0}\"{1}\"", directives[i], directives[++i]);
|
|
nonce = directives[i];
|
|
break;
|
|
case "opaque=":
|
|
authenticationFieldReply += string.Format(", {0}\"{1}\"", directives[i], directives[++i]);
|
|
opaque = directives[i];
|
|
break;
|
|
case "algorithm=":
|
|
authenticationFieldReply += string.Format(", {0}\"{1}\"", directives[i], directives[++i]);
|
|
algorithm = directives[i];
|
|
break;
|
|
case "qop=":
|
|
List<string> qops = new List<string>(directives[++i].Split(new char[] { ',' }));
|
|
if (qops.Count > 0)
|
|
{
|
|
if (qops.Contains("auth"))
|
|
qop = "auth";
|
|
else if (qops.Contains("auth-int"))
|
|
qop = "auth-int";
|
|
else
|
|
throw new ProxyServerAuthenticationException(
|
|
"Digest authentication's quality-of-protection directive of is not supported.");
|
|
authenticationFieldReply += string.Format(", qop=\"{0}\"", qop);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
string clientNonce = "X3nC3nt3r"; // todo: generate random string
|
|
if (qop != null)
|
|
authenticationFieldReply += string.Format(", cnonce=\"{0}\"", clientNonce);
|
|
|
|
string nonceCount = "00000001"; // todo: track nonces and their corresponding nonce counts
|
|
if (qop != null)
|
|
authenticationFieldReply += string.Format(", nc={0}", nonceCount);
|
|
|
|
string HA1 = "";
|
|
string scratch = string.Format("{0}:{1}:{2}", credentials.UserName, realm, credentials.Password);
|
|
if (algorithm == null || algorithm == "MD5")
|
|
HA1 = MD5Hash(scratch);
|
|
else
|
|
HA1 = MD5Hash(string.Format("{0}:{1}:{2}", MD5Hash(scratch), nonce, clientNonce));
|
|
|
|
string HA2 = "";
|
|
scratch = GetPartOrNull(header, 0);
|
|
scratch = string.Format("{0}:{1}:{2}", scratch ?? "CONNECT", uri.Host, uri.Port);
|
|
if (qop == null || qop == "auth")
|
|
HA2 = MD5Hash(scratch);
|
|
else
|
|
{
|
|
string entityBody = initialResponse[initialResponse.Count - 1]; // entity body should have been stored as last element of initialResponse
|
|
string str = string.Format("{0}:{1}", scratch, MD5Hash(entityBody));
|
|
HA2 = MD5Hash(str);
|
|
}
|
|
|
|
string response = "";
|
|
if (qop == null)
|
|
response = MD5Hash(string.Format("{0}:{1}:{2}", HA1, nonce, HA2));
|
|
else
|
|
response = MD5Hash(string.Format("{0}:{1}:{2}:{3}:{4}:{5}", HA1, nonce, nonceCount, clientNonce, qop, HA2));
|
|
|
|
authenticationFieldReply += string.Format(", response=\"{0}\"", response);
|
|
|
|
WriteLine(header, stream);
|
|
WriteLine(authenticationFieldReply, stream);
|
|
WriteLine(stream);
|
|
}
|
|
else
|
|
{
|
|
string authType = GetPartOrNull(fields[0], 1);
|
|
throw new ProxyServerAuthenticationException(
|
|
string.Format("Proxy server's {0} authentication method is not supported.", authType ?? "chosen"));
|
|
}
|
|
|
|
// handle authentication attempt response
|
|
List<string> authenticatedResponse = new List<string>();
|
|
ReadHttpHeaders(ref stream, proxy, nodelay, timeout_ms, authenticatedResponse);
|
|
if (authenticatedResponse.Count == 0)
|
|
throw new BadServerResponseException("No response from the proxy server after authentication attempt.");
|
|
switch (getResultCode(authenticatedResponse[0]))
|
|
{
|
|
case 200:
|
|
break;
|
|
case 407:
|
|
throw new ProxyServerAuthenticationException("Proxy server denied access due to wrong credentials.");
|
|
default:
|
|
throw new BadServerResponseException(string.Format(
|
|
"Received error code {0} from the server", authenticatedResponse[0]));
|
|
}
|
|
}
|
|
}
|
|
|
|
private static Stream DO_HTTP(Uri uri, IWebProxy proxy, bool nodelay, int timeout_ms, params string[] headers)
|
|
{
|
|
Stream stream = ConnectStream(uri, proxy, nodelay, timeout_ms);
|
|
|
|
int redirects = 0;
|
|
|
|
do
|
|
{
|
|
if (redirects > MAX_REDIRECTS)
|
|
throw new TooManyRedirectsException(redirects, uri);
|
|
|
|
redirects++;
|
|
|
|
foreach (string header in headers)
|
|
WriteLine(header, stream);
|
|
WriteLine(stream);
|
|
|
|
stream.Flush();
|
|
}
|
|
while (ReadHttpHeaders(ref stream, proxy, nodelay, timeout_ms));
|
|
|
|
return stream;
|
|
}
|
|
|
|
//
|
|
// The following functions do all the HTTP headers related stuff
|
|
// returning the stream ready for use
|
|
//
|
|
|
|
public static Stream CONNECT(Uri uri, IWebProxy proxy, String session, int timeout_ms)
|
|
{
|
|
return DO_HTTP(uri, proxy, true, timeout_ms,
|
|
string.Format("CONNECT {0} HTTP/1.0", uri.PathAndQuery),
|
|
string.Format("Host: {0}", uri.Host),
|
|
string.Format("Cookie: session_id={0}", session));
|
|
}
|
|
|
|
public static Stream PUT(Uri uri, IWebProxy proxy, long ContentLength, int timeout_ms)
|
|
{
|
|
return DO_HTTP(uri, proxy, false, timeout_ms,
|
|
string.Format("PUT {0} HTTP/1.0", uri.PathAndQuery),
|
|
string.Format("Host: {0}", uri.Host),
|
|
string.Format("Content-Length: {0}", ContentLength));
|
|
}
|
|
|
|
public static Stream GET(Uri uri, IWebProxy proxy, int timeout_ms)
|
|
{
|
|
return DO_HTTP(uri, proxy, false, timeout_ms,
|
|
string.Format("GET {0} HTTP/1.0", uri.PathAndQuery),
|
|
string.Format("Host: {0}", uri.Host));
|
|
}
|
|
|
|
/// <summary>
|
|
/// A general HTTP PUT method, with delegates for progress and cancelling. May throw various exceptions.
|
|
/// </summary>
|
|
/// <param name="progressDelegate">Delegate called periodically (500ms) with percent complete</param>
|
|
/// <param name="cancellingDelegate">Delegate called periodically to see if need to cancel</param>
|
|
/// <param name="uri">URI to PUT to</param>
|
|
/// <param name="proxy">A proxy to handle the HTTP connection</param>
|
|
/// <param name="path">Path to file to put</param>
|
|
/// <param name="timeout_ms">Timeout for the connection in ms. 0 for no timeout.</param>
|
|
public static void Put(UpdateProgressDelegate progressDelegate, FuncBool cancellingDelegate,
|
|
Uri uri, IWebProxy proxy, string path, int timeout_ms)
|
|
{
|
|
using (Stream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read),
|
|
requestStream = PUT(uri, proxy, fileStream.Length, timeout_ms))
|
|
{
|
|
long len = fileStream.Length;
|
|
DataCopiedDelegate dataCopiedDelegate = delegate(long bytes)
|
|
{
|
|
if (progressDelegate != null && len > 0)
|
|
progressDelegate((int)((bytes * 100) / len));
|
|
};
|
|
|
|
CopyStream(fileStream, requestStream, dataCopiedDelegate, cancellingDelegate);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// A general HTTP GET method, with delegates for progress and cancelling. May throw various exceptions.
|
|
/// </summary>
|
|
/// <param name="dataRxDelegate">Delegate called periodically (500 ms) with the number of bytes transferred</param>
|
|
/// <param name="cancellingDelegate">Delegate called periodically to see if need to cancel</param>
|
|
/// <param name="uri">URI to GET from</param>
|
|
/// <param name="proxy">A proxy to handle the HTTP connection</param>
|
|
/// <param name="path">Path to file to receive the data</param>
|
|
/// <param name="timeout_ms">Timeout for the connection in ms. 0 for no timeout.</param>
|
|
public static void Get(DataCopiedDelegate dataCopiedDelegate, FuncBool cancellingDelegate,
|
|
Uri uri, IWebProxy proxy, string path, int timeout_ms)
|
|
{
|
|
string tmpFile = Path.GetTempFileName();
|
|
try
|
|
{
|
|
using (Stream fileStream = new FileStream(tmpFile, FileMode.Create, FileAccess.Write, FileShare.None),
|
|
downloadStream = GET(uri, proxy, timeout_ms))
|
|
{
|
|
CopyStream(downloadStream, fileStream, dataCopiedDelegate, cancellingDelegate);
|
|
fileStream.Flush();
|
|
}
|
|
|
|
File.Delete(path);
|
|
File.Move(tmpFile, path);
|
|
}
|
|
finally
|
|
{
|
|
File.Delete(tmpFile);
|
|
}
|
|
}
|
|
}
|
|
}
|