C＃的HttpClient PUT [英] C# HttpClient PUT
问题描述
有关某种原因，我下面的代码，用于现在的工作从而引发了异常：
For some reason my below code that used to work now consequently raises an exception:
public static async Task<string> HttpPut(string inUrl, string inFilePath)
{
using (var handler = new HttpClientHandler
{
AllowAutoRedirect = false
})
{
using (var client = new HttpClient(handler))
{
//var content = new StreamContent(new FileStream(inFilePath, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 4096, useAsync: true));
using (var content = new StreamContent(new FileStream(inFilePath, FileMode.Open)))
{
content.Headers.Remove("Content-Type");
content.Headers.Add("Content-Type", "application/octet-stream");
using (var req = new HttpRequestMessage(HttpMethod.Put, inUrl))
{
string authInfo = String.Format("{0}:{1}", Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").UserName, Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").Password);
authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
req.Headers.Add("Authorization", "Basic " + authInfo);
req.Headers.Remove("Expect");
req.Headers.Add("Expect", "");
//req.Headers.TransferEncodingChunked = true;
req.Content = content;
// Ignore Certificate validation failures (aka untrusted certificate + certificate chains)
ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
using (HttpResponseMessage resp = await client.SendAsync(req))
{
//This part is specific to the setup on an Expo we're at...
if (resp.StatusCode == HttpStatusCode.Redirect || resp.StatusCode == HttpStatusCode.TemporaryRedirect)
{
string redirectUrl = resp.Headers.Location.ToString();
if (redirectUrl.Contains("vme-store"))
{
redirectUrl = redirectUrl.Replace("vme-store", "10.230.0.11");
}
return await HttpPut(redirectUrl, inFilePath);
}
resp.EnsureSuccessStatusCode();
return await resp.Content.ReadAsStringAsync();
}
}
}
}
}
}
我得到的例外是：
System.NotSupportedException was unhandled
HResult=-2146233067
Message=The stream does not support concurrent IO read or write operations.
Source=System
StackTrace:
at System.Net.ConnectStream.InternalWrite(Boolean async, Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state)
at System.Net.ConnectStream.BeginWrite(Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state)
at System.Net.Http.StreamToStreamCopy.BufferReadCallback(IAsyncResult ar)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at VizWolfInnerServer.Tools.HttpConnector.<HttpPut>d__39.MoveNext() in c:\Users\christer\Documents\Visual Studio 2012\Projects\VizWolfNew\VizWolfInnerServer\Tools\HttpConnector.cs:line 202
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at VizWolfInnerServer.Tools.VizAPIConnector.<VmeUploadMedia>d__0.MoveNext() in c:\Users\christer\Documents\Visual Studio 2012\Projects\VizWolfNew\VizWolfInnerServer\Tools\VizAPIConnector.cs:line 187
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__1(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
InnerException:
我有一个很很难找到合适的文档和示例HttpClient和我搞清楚为什么突然不挣扎工作（使用的StringContent而不是StreamContent一个完全类似的方法，完美的作品）...
I'm having a very hard time finding proper documentation and examples for HttpClient, and I'm struggling with figuring out why this suddenly doesn't work (a totally similar method with StringContent instead of StreamContent works perfectly)...
它最初会从它自己的线程中调用，然后是这样的：
It originally gets called from it's own thread, and then like this:
public static async void VmeUploadMedia(string inUploadLink, string inFilePath)
{
string result = await HttpConnector.HttpPut(inUploadLink, inFilePath);
}
任何点什么明显？
Anyone spot anything obvious?
感谢
更新
原来获得世博会的家伙映射他们的存储名称与它的IP，所以我可以回到我原来的代码是最好的解决方案。我遇到的问题是与AllowAutoRedirect = FALSE。发生在HttpResponseMessage RESP =例外等待client.SendAsync（REQ），即使没有重定向究竟会发生什么。我有点失去了，为什么有人甚至发生，但使用该代码的一切是现在工作：
Turns out getting the expo-guys to map their storage-name with it's IP so I could go back to my original code was the best solution. The problem I was having is something to do with AllowAutoRedirect = false. The exception occured on HttpResponseMessage resp = await client.SendAsync(req), even if there was no redirection really going on. I'm kind of lost as to why it was even happening, but using this code everything is working now:
public static async Task<string> HttpPut(string inUrl, string inFilePath)
{
using (var client = new HttpClient())
{
using (var content = new StreamContent(File.OpenRead(inFilePath)))
{
content.Headers.Remove("Content-Type");
content.Headers.Add("Content-Type", "application/octet-stream");
using (var req = new HttpRequestMessage(HttpMethod.Put, inUrl))
{
string authInfo = String.Format("{0}:{1}", Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").UserName, Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").Password);
authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
req.Headers.Add("Authorization", "Basic " + authInfo);
req.Headers.Remove("Expect");
req.Headers.Add("Expect", "");
req.Content = content;
// Ignore Certificate validation failures (aka untrusted certificate + certificate chains)
ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
using (HttpResponseMessage resp = await client.SendAsync(req))
{
resp.EnsureSuccessStatusCode();
return await resp.Content.ReadAsStringAsync();
}
}
}
}
}
感谢谁试图帮助
推荐答案
原来获得世博会的家伙来映射他们的存储 - 命名与它的IP，所以我可以回到我原来的代码是最好的解决方案。我遇到的问题是与AllowAutoRedirect = FALSE。发生在HttpResponseMessage RESP =例外等待client.SendAsync（REQ），即使没有重定向究竟会发生什么。我有点失去了，为什么有人甚至发生，但使用该代码的一切是现在工作：
Turns out getting the expo-guys to map their storage-name with it's IP so I could go back to my original code was the best solution. The problem I was having is something to do with AllowAutoRedirect = false. The exception occured on HttpResponseMessage resp = await client.SendAsync(req), even if there was no redirection really going on. I'm kind of lost as to why it was even happening, but using this code everything is working now:
public static async Task<string> HttpPut(string inUrl, string inFilePath)
{
using (var client = new HttpClient())
{
using (var content = new StreamContent(File.OpenRead(inFilePath)))
{
content.Headers.Remove("Content-Type");
content.Headers.Add("Content-Type", "application/octet-stream");
using (var req = new HttpRequestMessage(HttpMethod.Put, inUrl))
{
string authInfo = String.Format("{0}:{1}", Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").UserName, Program.Config.MediaStorageList.Find(o => o.Name == "Viz Media Engine Test").Password);
authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
req.Headers.Add("Authorization", "Basic " + authInfo);
req.Headers.Remove("Expect");
req.Headers.Add("Expect", "");
req.Content = content;
// Ignore Certificate validation failures (aka untrusted certificate + certificate chains)
ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
using (HttpResponseMessage resp = await client.SendAsync(req))
{
resp.EnsureSuccessStatusCode();
return await resp.Content.ReadAsStringAsync();
}
}
}
}
}
感谢谁试图帮助
这篇关于C＃的HttpClient PUT的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
