/// <summary>
/// Invoke the specified method against the server
/// </summary>
/// <typeparam name="TBody">The type of <paramref name="body"/></typeparam>
/// <typeparam name="TResult">The expected response type from the server</typeparam>
/// <param name="method">The HTTP method to be executed</param>
/// <param name="url">The resource URL to be executed against</param>
/// <param name="contentType">The content/type of <paramref name="body"/></param>
/// <param name="body">The contents of the request to send to the server</param>
/// <param name="query">The query to append to the URL</param>
/// <returns>The server response</returns>
public TResult Invoke <TBody, TResult>(string method, string url, string contentType, TBody body, params KeyValuePair <string, object>[] query)
{
NameValueCollection parameters = new NameValueCollection();
try
{
if (query != null)
{
parameters = new NameValueCollection(query);
}
var requestEventArgs = new RestRequestEventArgs(method, url, parameters, contentType, body);
this.Requesting?.Invoke(this, requestEventArgs);
if (requestEventArgs.Cancel)
{
s_tracer.TraceVerbose("HTTP request cancelled");
return(default(TResult));
}
// Invoke
WebHeaderCollection responseHeaders = null;
var retVal = this.InvokeInternal <TBody, TResult>(requestEventArgs.Method, requestEventArgs.Url, requestEventArgs.ContentType, requestEventArgs.AdditionalHeaders, out responseHeaders, body, requestEventArgs.Query);
this.Responded?.Invoke(this, new RestResponseEventArgs(requestEventArgs.Method, requestEventArgs.Url, requestEventArgs.Query, requestEventArgs.ContentType, retVal, 200, 0, this.ConvertHeaders(responseHeaders)));
return(retVal);
}
catch (Exception e)
{
s_tracer.TraceError("Error invoking HTTP: {0}", e.Message);
this.Responded?.Invoke(this, new RestResponseEventArgs(method, url, parameters, contentType, null, 500, 0, null));
throw;
}
}
/// <summary>
/// Patches the specified resource at <paramref name="url"/> with <paramref name="patch"/> when <paramref name="ifMatch"/> is true
/// </summary>
/// <param name="url">The resource URL to patch</param>
/// <param name="contentType">The content/type of the patch (dictates serialization)</param>
/// <param name="ifMatch">Identifies the If-Match header</param>
/// <param name="patch">The patch contents</param>
/// <returns>The new ETAG of the patched resource</returns>
public String Patch <TPatch>(string url, string contentType, String ifMatch, TPatch patch)
{
try
{
var requestEventArgs = new RestRequestEventArgs("PATCH", url, null, contentType, patch);
this.Requesting?.Invoke(this, requestEventArgs);
if (requestEventArgs.Cancel)
{
s_tracer.TraceVerbose("HTTP request cancelled");
return(null);
}
WebHeaderCollection requestHeaders = requestEventArgs.AdditionalHeaders ?? new WebHeaderCollection(),
responseHeaders = null;
requestHeaders[HttpRequestHeader.IfMatch] = ifMatch;
// Invoke
this.InvokeInternal <TPatch, Object>("PATCH", url, contentType, requestHeaders, out responseHeaders, patch, null);
// Return the ETag of the
return(responseHeaders["ETag"]);
}
catch (Exception e)
{
s_tracer.TraceError("Error invoking HTTP: {0}", e.Message);
this.Responded?.Invoke(this, new RestResponseEventArgs("PATCH", url, null, contentType, null, 500, 0, null));
throw;
}
}
/// <summary>
/// Perform a head operation against the specified url
/// </summary>
/// <param name="query">The query to execute</param>
/// <param name="resourceName">The name of the resource (url)</param>
/// <returns>The HTTP headers (result of the HEAD operation)</returns>
public IDictionary <string, string> Head(string resourceName, params KeyValuePair <String, Object>[] query)
{
NameValueCollection parameters = new NameValueCollection();
try
{
if (query != null)
{
parameters = new NameValueCollection(query);
}
var requestEventArgs = new RestRequestEventArgs("HEAD", resourceName, parameters, null, null);
this.Requesting?.Invoke(this, requestEventArgs);
if (requestEventArgs.Cancel)
{
s_tracer.TraceVerbose("HTTP request cancelled");
return(null);
}
// Invoke
var httpWebReq = this.CreateHttpRequest(resourceName, requestEventArgs.Query);
httpWebReq.Method = "HEAD";
// Get the responst
Dictionary <String, String> retVal = new Dictionary <string, string>();
Exception fault = null;
var httpTask = httpWebReq.GetResponseAsync().ContinueWith(o =>
{
if (o.IsFaulted)
{
fault = o.Exception.InnerExceptions.First();
}
else
{
this.Responding?.Invoke(this, new RestResponseEventArgs("HEAD", resourceName, parameters, null, null, 200, o.Result.ContentLength, this.ConvertHeaders(o.Result.Headers)));
foreach (var itm in o.Result.Headers.AllKeys)
{
retVal.Add(itm, o.Result.Headers[itm]);
}
}
}, TaskContinuationOptions.LongRunning);
httpTask.Wait();
if (fault != null)
{
throw fault;
}
this.Responded?.Invoke(this, new RestResponseEventArgs("HEAD", resourceName, parameters, null, null, 200, 0, retVal));
return(retVal);
}
catch (Exception e)
{
s_tracer.TraceError("Error invoking HTTP: {0}", e.Message);
this.Responded?.Invoke(this, new RestResponseEventArgs("HEAD", resourceName, parameters, null, null, 500, 0, null));
throw;
}
}
/// <summary>
/// Retrieves a raw byte array of data from the specified location
/// </summary>
/// <param name="url">The resource URL to fetch from the server</param>
/// <param name="query">The query (as key=value) to send on the GET request</param>
public byte[] Get(String url, params KeyValuePair <string, object>[] query)
{
NameValueCollection parameters = new NameValueCollection();
try
{
var requestEventArgs = new RestRequestEventArgs("GET", url, new NameValueCollection(query), null, null);
this.Requesting?.Invoke(this, requestEventArgs);
if (requestEventArgs.Cancel)
{
s_tracer.TraceVerbose("HTTP request cancelled");
return(null);
}
// Invoke
var httpWebReq = this.CreateHttpRequest(url, requestEventArgs.Query);
httpWebReq.Method = "GET";
// Get the responst
byte[] retVal = null;
WebHeaderCollection headers = null;
Exception requestException = null;
var httpTask = httpWebReq.GetResponseAsync().ContinueWith(o =>
{
if (o.IsFaulted)
{
requestException = o.Exception.InnerExceptions.First();
}
else
{
try
{
headers = o.Result.Headers;
this.Responding?.Invoke(this, new RestResponseEventArgs("GET", url, requestEventArgs.Query, o.Result.ContentType, null, 200, o.Result.ContentLength, this.ConvertHeaders(headers)));
byte[] buffer = new byte[2048];
int br = 1;
using (var ms = new MemoryStream())
using (var httpStream = o.Result.GetResponseStream())
{
while (br > 0)
{
br = httpStream.Read(buffer, 0, 2048);
ms.Write(buffer, 0, br);
// Raise event
this.FireProgressChanged(o.Result.ContentType, ms.Length / (float)o.Result.ContentLength);
}
ms.Seek(0, SeekOrigin.Begin);
switch (o.Result.Headers["Content-Encoding"])
{
case "deflate":
using (var dfs = new DeflateStream(new NonDisposingStream(ms), CompressionMode.Decompress))
using (var oms = new MemoryStream())
{
dfs.CopyTo(oms);
retVal = oms.ToArray();
}
break;
case "gzip":
using (var gzs = new GZipStream(new NonDisposingStream(ms), CompressionMode.Decompress))
using (var oms = new MemoryStream())
{
gzs.CopyTo(oms);
retVal = oms.ToArray();
}
break;
case "bzip2":
using (var lzmas = new BZip2Stream(new NonDisposingStream(ms), CompressionMode.Decompress, false))
using (var oms = new MemoryStream())
{
lzmas.CopyTo(oms);
retVal = oms.ToArray();
}
break;
case "lzma":
using (var lzmas = new LZipStream(new NonDisposingStream(ms), CompressionMode.Decompress))
using (var oms = new MemoryStream())
{
lzmas.CopyTo(oms);
retVal = oms.ToArray();
}
break;
default:
retVal = ms.ToArray();
break;
}
}
}
catch (Exception e)
{
s_tracer.TraceError("Error downloading {0}: {1}", url, e.Message);
}
}
}, TaskContinuationOptions.LongRunning);
httpTask.Wait();
if (requestException != null)
{
throw requestException;
}
this.Responded?.Invoke(this, new RestResponseEventArgs("GET", url, null, null, null, 200, 0, this.ConvertHeaders(headers)));
return(retVal);
}
catch (WebException e)
{
throw new RestClientException <byte[]>(
null,
e,
e.Status,
e.Response);
}
catch (Exception e)
{
s_tracer.TraceError("Error invoking HTTP: {0}", e.Message);
this.Responded?.Invoke(this, new RestResponseEventArgs("GET", url, null, null, null, 500, 0, null));
throw;
}
}
