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| 1 | 1caef52e | Panagiotis Kanavos | <!DOCTYPE html />
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| 2 | 1caef52e | Panagiotis Kanavos | |
| 3 | 1caef52e | Panagiotis Kanavos | <html>
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| 4 | 1caef52e | Panagiotis Kanavos | <head>
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| 5 | 1caef52e | Panagiotis Kanavos | <title>RestClient.cs</title> |
| 6 | 1caef52e | Panagiotis Kanavos | <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> |
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| 10 | 1caef52e | Panagiotis Kanavos | <body onload="prettyPrint()"> |
| 11 | 1caef52e | Panagiotis Kanavos | <div id="container"> |
| 12 | 1caef52e | Panagiotis Kanavos | <div id="background"></div> |
| 13 | 1caef52e | Panagiotis Kanavos | <div id="jump_to"> |
| 14 | 1caef52e | Panagiotis Kanavos | Jump To …
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| 17 | 1caef52e | Panagiotis Kanavos | <a class="source" href="cloudfilesclient.html"> |
| 18 | 1caef52e | Panagiotis Kanavos | CloudFilesClient.cs |
| 19 | 1caef52e | Panagiotis Kanavos | </a>
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| 20 | 1caef52e | Panagiotis Kanavos | <a class="source" href="restclient.html"> |
| 21 | 1caef52e | Panagiotis Kanavos | RestClient.cs |
| 22 | 1caef52e | Panagiotis Kanavos | </a>
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| 23 | 1caef52e | Panagiotis Kanavos | <a class="source" href="timeoutretrycondition.html"> |
| 24 | 1caef52e | Panagiotis Kanavos | TimeoutRetryCondition.cs |
| 25 | 1caef52e | Panagiotis Kanavos | </a>
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| 26 | 1caef52e | Panagiotis Kanavos | <a class="source" href="properties/assemblyinfo.html"> |
| 27 | 1caef52e | Panagiotis Kanavos | Properties\AssemblyInfo.cs |
| 28 | 1caef52e | Panagiotis Kanavos | </a>
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| 30 | 1caef52e | Panagiotis Kanavos | </div>
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| 31 | 1caef52e | Panagiotis Kanavos | </div>
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| 32 | 1caef52e | Panagiotis Kanavos | <table cellpadding="0" cellspacing="0"> |
| 33 | 1caef52e | Panagiotis Kanavos | <thead>
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| 34 | 1caef52e | Panagiotis Kanavos | <tr>
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| 35 | 1caef52e | Panagiotis Kanavos | <th class="docs"> |
| 36 | 1caef52e | Panagiotis Kanavos | <h1>RestClient.cs</h1> |
| 37 | 1caef52e | Panagiotis Kanavos | </th>
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| 38 | 1caef52e | Panagiotis Kanavos | <th class="code"></th> |
| 39 | 1caef52e | Panagiotis Kanavos | </tr>
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| 40 | 1caef52e | Panagiotis Kanavos | </thead>
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| 41 | 1caef52e | Panagiotis Kanavos | <tbody>
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| 42 | 1caef52e | Panagiotis Kanavos | <tr id="section_1"> |
| 43 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 44 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 45 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_1">¶</a> |
| 46 | 1caef52e | Panagiotis Kanavos | </div>
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| 47 | 1caef52e | Panagiotis Kanavos | <hr /> |
| 48 | 1caef52e | Panagiotis Kanavos | |
| 49 | 1caef52e | Panagiotis Kanavos | <p><copyright file="RestClient.cs" company="Microsoft"> |
| 50 | 1caef52e | Panagiotis Kanavos | TODO: Update copyright text.</p>
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| 51 | 1caef52e | Panagiotis Kanavos | |
| 52 | 1caef52e | Panagiotis Kanavos | <h2></copyright></h2> |
| 53 | 1caef52e | Panagiotis Kanavos | |
| 54 | 1caef52e | Panagiotis Kanavos | </td>
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| 55 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 56 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> |
| 57 | 1caef52e | Panagiotis Kanavos | using System.Collections.Specialized; |
| 58 | 1caef52e | Panagiotis Kanavos | using System.Diagnostics; |
| 59 | 1caef52e | Panagiotis Kanavos | using System.Diagnostics.Contracts; |
| 60 | 1caef52e | Panagiotis Kanavos | using System.IO; |
| 61 | 1caef52e | Panagiotis Kanavos | using System.Net; |
| 62 | 1caef52e | Panagiotis Kanavos | using System.Runtime.Serialization; |
| 63 | 1caef52e | Panagiotis Kanavos | using System.Threading.Tasks; |
| 64 | 1caef52e | Panagiotis Kanavos | |
| 65 | 1caef52e | Panagiotis Kanavos | namespace Pithos.Network |
| 66 | 1caef52e | Panagiotis Kanavos | {
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| 67 | 1caef52e | Panagiotis Kanavos | using System; |
| 68 | 1caef52e | Panagiotis Kanavos | using System.Collections.Generic; |
| 69 | 1caef52e | Panagiotis Kanavos | using System.Linq; |
| 70 | 1caef52e | Panagiotis Kanavos | using System.Text; |
| 71 | 1caef52e | Panagiotis Kanavos | |
| 72 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 73 | 1caef52e | Panagiotis Kanavos | </td>
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| 74 | 1caef52e | Panagiotis Kanavos | </tr>
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| 75 | 1caef52e | Panagiotis Kanavos | <tr id="section_2"> |
| 76 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 77 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 78 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_2">¶</a> |
| 79 | 1caef52e | Panagiotis Kanavos | </div>
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| 80 | 1caef52e | Panagiotis Kanavos | <p>/ <summary> |
| 81 | 1caef52e | Panagiotis Kanavos | / TODO: Update summary. |
| 82 | 1caef52e | Panagiotis Kanavos | / </summary></p> |
| 83 | 1caef52e | Panagiotis Kanavos | |
| 84 | 1caef52e | Panagiotis Kanavos | </td>
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| 85 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 86 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> public class RestClient:WebClient |
| 87 | 1caef52e | Panagiotis Kanavos | {
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| 88 | 1caef52e | Panagiotis Kanavos | public int Timeout { get; set; }
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| 89 | 1caef52e | Panagiotis Kanavos | |
| 90 | 1caef52e | Panagiotis Kanavos | public bool TimedOut { get; set; }
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| 91 | 1caef52e | Panagiotis Kanavos | |
| 92 | 1caef52e | Panagiotis Kanavos | public HttpStatusCode StatusCode { get; private set; }
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| 93 | 1caef52e | Panagiotis Kanavos | |
| 94 | 1caef52e | Panagiotis Kanavos | public string StatusDescription { get; set; }
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| 95 | 1caef52e | Panagiotis Kanavos | |
| 96 | 1caef52e | Panagiotis Kanavos | |
| 97 | 1caef52e | Panagiotis Kanavos | public int Retries { get; set; }
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| 98 | 1caef52e | Panagiotis Kanavos | |
| 99 | 1caef52e | Panagiotis Kanavos | private readonly Dictionary<string, string> _parameters=new Dictionary<string, string>(); |
| 100 | 1caef52e | Panagiotis Kanavos | public Dictionary<string, string> Parameters |
| 101 | 1caef52e | Panagiotis Kanavos | {
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| 102 | 1caef52e | Panagiotis Kanavos | get { return _parameters; }
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| 103 | 1caef52e | Panagiotis Kanavos | } |
| 104 | 1caef52e | Panagiotis Kanavos | |
| 105 | 1caef52e | Panagiotis Kanavos | public RestClient():base() |
| 106 | 1caef52e | Panagiotis Kanavos | {
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| 107 | 1caef52e | Panagiotis Kanavos | |
| 108 | 1caef52e | Panagiotis Kanavos | } |
| 109 | 1caef52e | Panagiotis Kanavos | |
| 110 | 1caef52e | Panagiotis Kanavos | |
| 111 | 1caef52e | Panagiotis Kanavos | public RestClient(RestClient other) |
| 112 | 1caef52e | Panagiotis Kanavos | : base() |
| 113 | 1caef52e | Panagiotis Kanavos | {
|
| 114 | 1caef52e | Panagiotis Kanavos | CopyHeaders(other); |
| 115 | 1caef52e | Panagiotis Kanavos | Timeout = other.Timeout; |
| 116 | 1caef52e | Panagiotis Kanavos | Retries = other.Retries; |
| 117 | 1caef52e | Panagiotis Kanavos | BaseAddress = other.BaseAddress; |
| 118 | 1caef52e | Panagiotis Kanavos | |
| 119 | 1caef52e | Panagiotis Kanavos | foreach (var parameter in other.Parameters) |
| 120 | 1caef52e | Panagiotis Kanavos | {
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| 121 | 1caef52e | Panagiotis Kanavos | Parameters.Add(parameter.Key,parameter.Value); |
| 122 | 1caef52e | Panagiotis Kanavos | } |
| 123 | 1caef52e | Panagiotis Kanavos | |
| 124 | 1caef52e | Panagiotis Kanavos | this.Proxy = other.Proxy; |
| 125 | 1caef52e | Panagiotis Kanavos | } |
| 126 | 1caef52e | Panagiotis Kanavos | |
| 127 | 1caef52e | Panagiotis Kanavos | protected override WebRequest GetWebRequest(Uri address) |
| 128 | 1caef52e | Panagiotis Kanavos | {
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| 129 | 1caef52e | Panagiotis Kanavos | TimedOut = false; |
| 130 | 1caef52e | Panagiotis Kanavos | var webRequest = base.GetWebRequest(address); |
| 131 | 1caef52e | Panagiotis Kanavos | var request = webRequest as HttpWebRequest; |
| 132 | 1caef52e | Panagiotis Kanavos | if (IfModifiedSince.HasValue) |
| 133 | 1caef52e | Panagiotis Kanavos | request.IfModifiedSince = IfModifiedSince.Value; |
| 134 | 1caef52e | Panagiotis Kanavos | request.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip; |
| 135 | 1caef52e | Panagiotis Kanavos | if(Timeout>0)
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| 136 | 1caef52e | Panagiotis Kanavos | request.Timeout = Timeout; |
| 137 | 1caef52e | Panagiotis Kanavos | return request; |
| 138 | 1caef52e | Panagiotis Kanavos | } |
| 139 | 1caef52e | Panagiotis Kanavos | |
| 140 | 1caef52e | Panagiotis Kanavos | public DateTime? IfModifiedSince { get; set; }
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| 141 | 1caef52e | Panagiotis Kanavos | |
| 142 | 1caef52e | Panagiotis Kanavos | protected override WebResponse GetWebResponse(WebRequest request, IAsyncResult result) |
| 143 | 1caef52e | Panagiotis Kanavos | {
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| 144 | 1caef52e | Panagiotis Kanavos | var response = (HttpWebResponse) base.GetWebResponse(request, result); |
| 145 | 1caef52e | Panagiotis Kanavos | StatusCode=response.StatusCode; |
| 146 | 1caef52e | Panagiotis Kanavos | StatusDescription=response.StatusDescription; |
| 147 | 1caef52e | Panagiotis Kanavos | return response; |
| 148 | 1caef52e | Panagiotis Kanavos | } |
| 149 | 1caef52e | Panagiotis Kanavos | |
| 150 | 1caef52e | Panagiotis Kanavos | |
| 151 | 1caef52e | Panagiotis Kanavos | |
| 152 | 1caef52e | Panagiotis Kanavos | protected override WebResponse GetWebResponse(WebRequest request) |
| 153 | 1caef52e | Panagiotis Kanavos | {
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| 154 | 1caef52e | Panagiotis Kanavos | try |
| 155 | 1caef52e | Panagiotis Kanavos | {
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| 156 | 1caef52e | Panagiotis Kanavos | var response = (HttpWebResponse)base.GetWebResponse(request); |
| 157 | 1caef52e | Panagiotis Kanavos | StatusCode = response.StatusCode; |
| 158 | 1caef52e | Panagiotis Kanavos | StatusDescription = response.StatusDescription; |
| 159 | 1caef52e | Panagiotis Kanavos | return response; |
| 160 | 1caef52e | Panagiotis Kanavos | } |
| 161 | 1caef52e | Panagiotis Kanavos | catch (WebException exc) |
| 162 | 1caef52e | Panagiotis Kanavos | {
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| 163 | 1caef52e | Panagiotis Kanavos | if (exc.Response!=null && exc.Response.ContentLength > 0) |
| 164 | 1caef52e | Panagiotis Kanavos | {
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| 165 | 1caef52e | Panagiotis Kanavos | string content = GetContent(exc.Response); |
| 166 | 1caef52e | Panagiotis Kanavos | Trace.TraceError(content); |
| 167 | 1caef52e | Panagiotis Kanavos | } |
| 168 | 1caef52e | Panagiotis Kanavos | throw; |
| 169 | 1caef52e | Panagiotis Kanavos | } |
| 170 | 1caef52e | Panagiotis Kanavos | } |
| 171 | 1caef52e | Panagiotis Kanavos | |
| 172 | 1caef52e | Panagiotis Kanavos | private static string GetContent(WebResponse webResponse) |
| 173 | 1caef52e | Panagiotis Kanavos | {
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| 174 | 1caef52e | Panagiotis Kanavos | string content; |
| 175 | 1caef52e | Panagiotis Kanavos | using (var stream = webResponse.GetResponseStream()) |
| 176 | 1caef52e | Panagiotis Kanavos | using (var reader = new StreamReader(stream)) |
| 177 | 1caef52e | Panagiotis Kanavos | {
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| 178 | 1caef52e | Panagiotis Kanavos | content = reader.ReadToEnd(); |
| 179 | 1caef52e | Panagiotis Kanavos | } |
| 180 | 1caef52e | Panagiotis Kanavos | return content; |
| 181 | 1caef52e | Panagiotis Kanavos | } |
| 182 | 1caef52e | Panagiotis Kanavos | |
| 183 | 1caef52e | Panagiotis Kanavos | public string DownloadStringWithRetry(string address,int retries=0) |
| 184 | 1caef52e | Panagiotis Kanavos | {
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| 185 | 1caef52e | Panagiotis Kanavos | if (address == null) |
| 186 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("address"); |
| 187 | 1caef52e | Panagiotis Kanavos | |
| 188 | 1caef52e | Panagiotis Kanavos | var actualAddress = GetActualAddress(address); |
| 189 | 1caef52e | Panagiotis Kanavos | |
| 190 | 1caef52e | Panagiotis Kanavos | TraceStart("GET",actualAddress); |
| 191 | 1caef52e | Panagiotis Kanavos | |
| 192 | 1caef52e | Panagiotis Kanavos | var actualRetries = (retries == 0) ? Retries : retries; |
| 193 | 1caef52e | Panagiotis Kanavos | |
| 194 | 1caef52e | Panagiotis Kanavos | |
| 195 | 1caef52e | Panagiotis Kanavos | |
| 196 | 1caef52e | Panagiotis Kanavos | var task = Retry(() =>
|
| 197 | 1caef52e | Panagiotis Kanavos | {
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| 198 | 1caef52e | Panagiotis Kanavos | var uriString = String.Join("/", BaseAddress.TrimEnd('/'), actualAddress); |
| 199 | 1caef52e | Panagiotis Kanavos | var content = base.DownloadString(uriString); |
| 200 | 1caef52e | Panagiotis Kanavos | |
| 201 | 1caef52e | Panagiotis Kanavos | if (StatusCode == HttpStatusCode.NoContent) |
| 202 | 1caef52e | Panagiotis Kanavos | return String.Empty; |
| 203 | 1caef52e | Panagiotis Kanavos | return content; |
| 204 | 1caef52e | Panagiotis Kanavos | |
| 205 | 1caef52e | Panagiotis Kanavos | }, actualRetries); |
| 206 | 1caef52e | Panagiotis Kanavos | |
| 207 | 1caef52e | Panagiotis Kanavos | var result = task.Result; |
| 208 | 1caef52e | Panagiotis Kanavos | return result; |
| 209 | 1caef52e | Panagiotis Kanavos | } |
| 210 | 1caef52e | Panagiotis Kanavos | |
| 211 | 1caef52e | Panagiotis Kanavos | public void Head(string address,int retries=0) |
| 212 | 1caef52e | Panagiotis Kanavos | {
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| 213 | 1caef52e | Panagiotis Kanavos | RetryWithoutContent(address, retries, "HEAD"); |
| 214 | 1caef52e | Panagiotis Kanavos | } |
| 215 | 1caef52e | Panagiotis Kanavos | |
| 216 | 1caef52e | Panagiotis Kanavos | public void PutWithRetry(string address, int retries = 0) |
| 217 | 1caef52e | Panagiotis Kanavos | {
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| 218 | 1caef52e | Panagiotis Kanavos | RetryWithoutContent(address, retries, "PUT"); |
| 219 | 1caef52e | Panagiotis Kanavos | } |
| 220 | 1caef52e | Panagiotis Kanavos | |
| 221 | 1caef52e | Panagiotis Kanavos | public void DeleteWithRetry(string address,int retries=0) |
| 222 | 1caef52e | Panagiotis Kanavos | {
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| 223 | 1caef52e | Panagiotis Kanavos | RetryWithoutContent(address, retries, "DELETE"); |
| 224 | 1caef52e | Panagiotis Kanavos | } |
| 225 | 1caef52e | Panagiotis Kanavos | |
| 226 | 1caef52e | Panagiotis Kanavos | public string GetHeaderValue(string headerName) |
| 227 | 1caef52e | Panagiotis Kanavos | {
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| 228 | 1caef52e | Panagiotis Kanavos | var values=this.ResponseHeaders.GetValues(headerName); |
| 229 | 1caef52e | Panagiotis Kanavos | if (values == null) |
| 230 | 1caef52e | Panagiotis Kanavos | throw new WebException(String.Format("The {0} header is missing", headerName)); |
| 231 | 1caef52e | Panagiotis Kanavos | else |
| 232 | 1caef52e | Panagiotis Kanavos | return values[0]; |
| 233 | 1caef52e | Panagiotis Kanavos | } |
| 234 | 1caef52e | Panagiotis Kanavos | |
| 235 | 1caef52e | Panagiotis Kanavos | private void RetryWithoutContent(string address, int retries, string method) |
| 236 | 1caef52e | Panagiotis Kanavos | {
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| 237 | 1caef52e | Panagiotis Kanavos | if (address == null) |
| 238 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("address"); |
| 239 | 1caef52e | Panagiotis Kanavos | |
| 240 | 1caef52e | Panagiotis Kanavos | var actualAddress = GetActualAddress(address); |
| 241 | 1caef52e | Panagiotis Kanavos | var actualRetries = (retries == 0) ? Retries : retries; |
| 242 | 1caef52e | Panagiotis Kanavos | |
| 243 | 1caef52e | Panagiotis Kanavos | var task = Retry(() =>
|
| 244 | 1caef52e | Panagiotis Kanavos | {
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| 245 | 1caef52e | Panagiotis Kanavos | var uriString = String.Join("/",BaseAddress ,actualAddress); |
| 246 | 1caef52e | Panagiotis Kanavos | var uri = new Uri(uriString); |
| 247 | 1caef52e | Panagiotis Kanavos | var request = GetWebRequest(uri); |
| 248 | 1caef52e | Panagiotis Kanavos | request.Method = method; |
| 249 | 1caef52e | Panagiotis Kanavos | if (ResponseHeaders!=null) |
| 250 | 1caef52e | Panagiotis Kanavos | ResponseHeaders.Clear(); |
| 251 | 1caef52e | Panagiotis Kanavos | |
| 252 | 1caef52e | Panagiotis Kanavos | TraceStart(method, uriString); |
| 253 | 1caef52e | Panagiotis Kanavos | |
| 254 | 1caef52e | Panagiotis Kanavos | var response = (HttpWebResponse)GetWebResponse(request); |
| 255 | 1caef52e | Panagiotis Kanavos | StatusCode = response.StatusCode; |
| 256 | 1caef52e | Panagiotis Kanavos | StatusDescription = response.StatusDescription; |
| 257 | 1caef52e | Panagiotis Kanavos | |
| 258 | 1caef52e | Panagiotis Kanavos | |
| 259 | 1caef52e | Panagiotis Kanavos | return 0; |
| 260 | 1caef52e | Panagiotis Kanavos | }, actualRetries); |
| 261 | 1caef52e | Panagiotis Kanavos | |
| 262 | 1caef52e | Panagiotis Kanavos | task.Wait(); |
| 263 | 1caef52e | Panagiotis Kanavos | } |
| 264 | 1caef52e | Panagiotis Kanavos | |
| 265 | 1caef52e | Panagiotis Kanavos | /*private string RetryWithContent(string address, int retries, string method) |
| 266 | 1caef52e | Panagiotis Kanavos | {
|
| 267 | 1caef52e | Panagiotis Kanavos | if (address == null) |
| 268 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("address"); |
| 269 | 1caef52e | Panagiotis Kanavos | |
| 270 | 1caef52e | Panagiotis Kanavos | var actualAddress = GetActualAddress(address); |
| 271 | 1caef52e | Panagiotis Kanavos | var actualRetries = (retries == 0) ? Retries : retries; |
| 272 | 1caef52e | Panagiotis Kanavos | |
| 273 | 1caef52e | Panagiotis Kanavos | var task = Retry(() =>
|
| 274 | 1caef52e | Panagiotis Kanavos | {
|
| 275 | 1caef52e | Panagiotis Kanavos | var uriString = String.Join("/",BaseAddress ,actualAddress); |
| 276 | 1caef52e | Panagiotis Kanavos | var uri = new Uri(uriString); |
| 277 | 1caef52e | Panagiotis Kanavos | |
| 278 | 1caef52e | Panagiotis Kanavos | var request = GetWebRequest(uri); |
| 279 | 1caef52e | Panagiotis Kanavos | request.Method = method; |
| 280 | 1caef52e | Panagiotis Kanavos | |
| 281 | 1caef52e | Panagiotis Kanavos | if (ResponseHeaders!=null) |
| 282 | 1caef52e | Panagiotis Kanavos | ResponseHeaders.Clear(); |
| 283 | 1caef52e | Panagiotis Kanavos | |
| 284 | 1caef52e | Panagiotis Kanavos | TraceStart(method, uriString); |
| 285 | 1caef52e | Panagiotis Kanavos | |
| 286 | 1caef52e | Panagiotis Kanavos | var getResponse = request.GetResponseAsync(); |
| 287 | 1caef52e | Panagiotis Kanavos | |
| 288 | 1caef52e | Panagiotis Kanavos | var setStatus= getResponse.ContinueWith(t =>
|
| 289 | 1caef52e | Panagiotis Kanavos | {
|
| 290 | 1caef52e | Panagiotis Kanavos | var response = (HttpWebResponse)t.Result; |
| 291 | 1caef52e | Panagiotis Kanavos | StatusCode = response.StatusCode; |
| 292 | 1caef52e | Panagiotis Kanavos | StatusDescription = response.StatusDescription; |
| 293 | 1caef52e | Panagiotis Kanavos | return response; |
| 294 | 1caef52e | Panagiotis Kanavos | }); |
| 295 | 1caef52e | Panagiotis Kanavos | |
| 296 | 1caef52e | Panagiotis Kanavos | var getData = setStatus.ContinueWith(t =>
|
| 297 | 1caef52e | Panagiotis Kanavos | {
|
| 298 | 1caef52e | Panagiotis Kanavos | var response = t.Result; |
| 299 | 1caef52e | Panagiotis Kanavos | return response.GetResponseStream() |
| 300 | 1caef52e | Panagiotis Kanavos | .ReadAllBytesAsync(); |
| 301 | 1caef52e | Panagiotis Kanavos | }).Unwrap(); |
| 302 | 1caef52e | Panagiotis Kanavos | |
| 303 | 1caef52e | Panagiotis Kanavos | var data = getData.Result; |
| 304 | 1caef52e | Panagiotis Kanavos | var content=Encoding.UTF8.GetString(data); |
| 305 | 1caef52e | Panagiotis Kanavos | |
| 306 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 307 | 1caef52e | Panagiotis Kanavos | </td>
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| 308 | 1caef52e | Panagiotis Kanavos | </tr>
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| 309 | 1caef52e | Panagiotis Kanavos | <tr id="section_3"> |
| 310 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 311 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 312 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_3">¶</a> |
| 313 | 1caef52e | Panagiotis Kanavos | </div>
|
| 314 | 1caef52e | Panagiotis Kanavos | <pre><code> var response = (HttpWebResponse)GetWebResponse(request); |
| 315 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 316 | 1caef52e | Panagiotis Kanavos | |
| 317 | 1caef52e | Panagiotis Kanavos | </td>
|
| 318 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 319 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> |
| 320 | 1caef52e | Panagiotis Kanavos | |
| 321 | 1caef52e | Panagiotis Kanavos | /* |
| 322 | 1caef52e | Panagiotis Kanavos | StatusCode = response.StatusCode; |
| 323 | 1caef52e | Panagiotis Kanavos | StatusDescription = response.StatusDescription; |
| 324 | 1caef52e | Panagiotis Kanavos | #1# |
| 325 | 1caef52e | Panagiotis Kanavos | |
| 326 | 1caef52e | Panagiotis Kanavos | |
| 327 | 1caef52e | Panagiotis Kanavos | return content; |
| 328 | 1caef52e | Panagiotis Kanavos | }, actualRetries); |
| 329 | 1caef52e | Panagiotis Kanavos | |
| 330 | 1caef52e | Panagiotis Kanavos | return task.Result; |
| 331 | 1caef52e | Panagiotis Kanavos | }*/ |
| 332 | 1caef52e | Panagiotis Kanavos | |
| 333 | 1caef52e | Panagiotis Kanavos | private static void TraceStart(string method, string actualAddress) |
| 334 | 1caef52e | Panagiotis Kanavos | {
|
| 335 | 1caef52e | Panagiotis Kanavos | Trace.WriteLine(String.Format("[{0}] {1} {2}", method, DateTime.Now, actualAddress)); |
| 336 | 1caef52e | Panagiotis Kanavos | } |
| 337 | 1caef52e | Panagiotis Kanavos | |
| 338 | 1caef52e | Panagiotis Kanavos | private string GetActualAddress(string address) |
| 339 | 1caef52e | Panagiotis Kanavos | {
|
| 340 | 1caef52e | Panagiotis Kanavos | if (Parameters.Count == 0) |
| 341 | 1caef52e | Panagiotis Kanavos | return address; |
| 342 | 1caef52e | Panagiotis Kanavos | var addressBuilder=new StringBuilder(address); |
| 343 | 1caef52e | Panagiotis Kanavos | |
| 344 | 1caef52e | Panagiotis Kanavos | bool isFirst = true; |
| 345 | 1caef52e | Panagiotis Kanavos | foreach (var parameter in Parameters) |
| 346 | 1caef52e | Panagiotis Kanavos | {
|
| 347 | 1caef52e | Panagiotis Kanavos | if(isFirst) |
| 348 | 1caef52e | Panagiotis Kanavos | addressBuilder.AppendFormat("?{0}={1}", parameter.Key, parameter.Value); |
| 349 | 1caef52e | Panagiotis Kanavos | else |
| 350 | 1caef52e | Panagiotis Kanavos | addressBuilder.AppendFormat("&{0}={1}", parameter.Key, parameter.Value); |
| 351 | 1caef52e | Panagiotis Kanavos | isFirst = false; |
| 352 | 1caef52e | Panagiotis Kanavos | } |
| 353 | 1caef52e | Panagiotis Kanavos | return addressBuilder.ToString(); |
| 354 | 1caef52e | Panagiotis Kanavos | } |
| 355 | 1caef52e | Panagiotis Kanavos | |
| 356 | 1caef52e | Panagiotis Kanavos | public string DownloadStringWithRetry(Uri address,int retries=0) |
| 357 | 1caef52e | Panagiotis Kanavos | {
|
| 358 | 1caef52e | Panagiotis Kanavos | if (address == null) |
| 359 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("address"); |
| 360 | 1caef52e | Panagiotis Kanavos | |
| 361 | 1caef52e | Panagiotis Kanavos | var actualRetries = (retries == 0) ? Retries : retries; |
| 362 | 1caef52e | Panagiotis Kanavos | var task = Retry(() =>
|
| 363 | 1caef52e | Panagiotis Kanavos | {
|
| 364 | 1caef52e | Panagiotis Kanavos | var content = base.DownloadString(address); |
| 365 | 1caef52e | Panagiotis Kanavos | |
| 366 | 1caef52e | Panagiotis Kanavos | if (StatusCode == HttpStatusCode.NoContent) |
| 367 | 1caef52e | Panagiotis Kanavos | return String.Empty; |
| 368 | 1caef52e | Panagiotis Kanavos | return content; |
| 369 | 1caef52e | Panagiotis Kanavos | |
| 370 | 1caef52e | Panagiotis Kanavos | }, actualRetries); |
| 371 | 1caef52e | Panagiotis Kanavos | |
| 372 | 1caef52e | Panagiotis Kanavos | var result = task.Result; |
| 373 | 1caef52e | Panagiotis Kanavos | return result; |
| 374 | 1caef52e | Panagiotis Kanavos | } |
| 375 | 1caef52e | Panagiotis Kanavos | |
| 376 | 1caef52e | Panagiotis Kanavos | |
| 377 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 378 | 1caef52e | Panagiotis Kanavos | </td>
|
| 379 | 1caef52e | Panagiotis Kanavos | </tr>
|
| 380 | 1caef52e | Panagiotis Kanavos | <tr id="section_4"> |
| 381 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 382 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 383 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_4">¶</a> |
| 384 | 1caef52e | Panagiotis Kanavos | </div>
|
| 385 | 1caef52e | Panagiotis Kanavos | <p>/ <summary> |
| 386 | 1caef52e | Panagiotis Kanavos | / Copies headers from another RestClient |
| 387 | 1caef52e | Panagiotis Kanavos | / </summary>
|
| 388 | 1caef52e | Panagiotis Kanavos | / <param name="source">The RestClient from which the headers are copied</param></p> |
| 389 | 1caef52e | Panagiotis Kanavos | |
| 390 | 1caef52e | Panagiotis Kanavos | </td>
|
| 391 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 392 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> public void CopyHeaders(RestClient source) |
| 393 | 1caef52e | Panagiotis Kanavos | {
|
| 394 | 1caef52e | Panagiotis Kanavos | Contract.Requires(source != null, "source can't be null"); |
| 395 | 1caef52e | Panagiotis Kanavos | if (source == null) |
| 396 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("source", "source can't be null"); |
| 397 | 1caef52e | Panagiotis Kanavos | CopyHeaders(source.Headers,Headers); |
| 398 | 1caef52e | Panagiotis Kanavos | } |
| 399 | 1caef52e | Panagiotis Kanavos | |
| 400 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 401 | 1caef52e | Panagiotis Kanavos | </td>
|
| 402 | 1caef52e | Panagiotis Kanavos | </tr>
|
| 403 | 1caef52e | Panagiotis Kanavos | <tr id="section_5"> |
| 404 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 405 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 406 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_5">¶</a> |
| 407 | 1caef52e | Panagiotis Kanavos | </div>
|
| 408 | 1caef52e | Panagiotis Kanavos | <p>/ <summary> |
| 409 | 1caef52e | Panagiotis Kanavos | / Copies headers from one header collection to another |
| 410 | 1caef52e | Panagiotis Kanavos | / </summary>
|
| 411 | 1caef52e | Panagiotis Kanavos | / <param name="source">The source collection from which the headers are copied</param> |
| 412 | 1caef52e | Panagiotis Kanavos | / <param name="target">The target collection to which the headers are copied</param></p> |
| 413 | 1caef52e | Panagiotis Kanavos | |
| 414 | 1caef52e | Panagiotis Kanavos | </td>
|
| 415 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 416 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> public static void CopyHeaders(WebHeaderCollection source,WebHeaderCollection target) |
| 417 | 1caef52e | Panagiotis Kanavos | {
|
| 418 | 1caef52e | Panagiotis Kanavos | Contract.Requires(source != null, "source can't be null"); |
| 419 | 1caef52e | Panagiotis Kanavos | Contract.Requires(target != null, "target can't be null"); |
| 420 | 1caef52e | Panagiotis Kanavos | if (source == null) |
| 421 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("source", "source can't be null"); |
| 422 | 1caef52e | Panagiotis Kanavos | if (target == null) |
| 423 | 1caef52e | Panagiotis Kanavos | throw new ArgumentNullException("target", "target can't be null"); |
| 424 | 1caef52e | Panagiotis Kanavos | for (int i = 0; i < source.Count; i++)
|
| 425 | 1caef52e | Panagiotis Kanavos | {
|
| 426 | 1caef52e | Panagiotis Kanavos | target.Add(source.GetKey(i), source[i]); |
| 427 | 1caef52e | Panagiotis Kanavos | } |
| 428 | 1caef52e | Panagiotis Kanavos | } |
| 429 | 1caef52e | Panagiotis Kanavos | |
| 430 | 1caef52e | Panagiotis Kanavos | public void AssertStatusOK(string message) |
| 431 | 1caef52e | Panagiotis Kanavos | {
|
| 432 | 1caef52e | Panagiotis Kanavos | if (StatusCode >= HttpStatusCode.BadRequest)
|
| 433 | 1caef52e | Panagiotis Kanavos | throw new WebException(String.Format("{0} with code {1} - {2}", message, StatusCode, StatusDescription)); |
| 434 | 1caef52e | Panagiotis Kanavos | } |
| 435 | 1caef52e | Panagiotis Kanavos | |
| 436 | 1caef52e | Panagiotis Kanavos | |
| 437 | 1caef52e | Panagiotis Kanavos | private Task<T> Retry<T>(Func<T> original, int retryCount, TaskCompletionSource<T> tcs = null) |
| 438 | 1caef52e | Panagiotis Kanavos | {
|
| 439 | 1caef52e | Panagiotis Kanavos | if (tcs == null) |
| 440 | 1caef52e | Panagiotis Kanavos | tcs = new TaskCompletionSource<T>(); |
| 441 | 1caef52e | Panagiotis Kanavos | Task.Factory.StartNew(original).ContinueWith(_original =>
|
| 442 | 1caef52e | Panagiotis Kanavos | {
|
| 443 | 1caef52e | Panagiotis Kanavos | if (!_original.IsFaulted) |
| 444 | 1caef52e | Panagiotis Kanavos | tcs.SetFromTask(_original); |
| 445 | 1caef52e | Panagiotis Kanavos | else |
| 446 | 1caef52e | Panagiotis Kanavos | {
|
| 447 | 1caef52e | Panagiotis Kanavos | var e = _original.Exception.InnerException; |
| 448 | 1caef52e | Panagiotis Kanavos | var we = (e as WebException); |
| 449 | 1caef52e | Panagiotis Kanavos | if (we==null) |
| 450 | 1caef52e | Panagiotis Kanavos | tcs.SetException(e); |
| 451 | 1caef52e | Panagiotis Kanavos | else |
| 452 | 1caef52e | Panagiotis Kanavos | {
|
| 453 | 1caef52e | Panagiotis Kanavos | var statusCode = GetStatusCode(we); |
| 454 | 1caef52e | Panagiotis Kanavos | |
| 455 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 456 | 1caef52e | Panagiotis Kanavos | </td>
|
| 457 | 1caef52e | Panagiotis Kanavos | </tr>
|
| 458 | 1caef52e | Panagiotis Kanavos | <tr id="section_6"> |
| 459 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 460 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 461 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_6">¶</a> |
| 462 | 1caef52e | Panagiotis Kanavos | </div>
|
| 463 | 1caef52e | Panagiotis Kanavos | <p>Return null for 404</p> |
| 464 | 1caef52e | Panagiotis Kanavos | |
| 465 | 1caef52e | Panagiotis Kanavos | </td>
|
| 466 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 467 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> if (statusCode == HttpStatusCode.NotFound) |
| 468 | 1caef52e | Panagiotis Kanavos | tcs.SetResult(default(T)); |
| 469 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 470 | 1caef52e | Panagiotis Kanavos | </td>
|
| 471 | 1caef52e | Panagiotis Kanavos | </tr>
|
| 472 | 1caef52e | Panagiotis Kanavos | <tr id="section_7"> |
| 473 | 1caef52e | Panagiotis Kanavos | <td class="docs"> |
| 474 | 1caef52e | Panagiotis Kanavos | <div class="pilwrap"> |
| 475 | 1caef52e | Panagiotis Kanavos | <a class="pilcrow" href="#section_7">¶</a> |
| 476 | 1caef52e | Panagiotis Kanavos | </div>
|
| 477 | 1caef52e | Panagiotis Kanavos | <p>Retry for timeouts and service unavailable</p> |
| 478 | 1caef52e | Panagiotis Kanavos | |
| 479 | 1caef52e | Panagiotis Kanavos | </td>
|
| 480 | 1caef52e | Panagiotis Kanavos | <td class="code"> |
| 481 | 1caef52e | Panagiotis Kanavos | <pre><code class='prettyprint'> else if (we.Status == WebExceptionStatus.Timeout || |
| 482 | 1caef52e | Panagiotis Kanavos | (we.Status == WebExceptionStatus.ProtocolError && statusCode == HttpStatusCode.ServiceUnavailable)) |
| 483 | 1caef52e | Panagiotis Kanavos | {
|
| 484 | 1caef52e | Panagiotis Kanavos | TimedOut = true; |
| 485 | 1caef52e | Panagiotis Kanavos | if (retryCount == 0) |
| 486 | 1caef52e | Panagiotis Kanavos | {
|
| 487 | 1caef52e | Panagiotis Kanavos | Trace.TraceError("[ERROR] Timed out too many times. {0}\n", e); |
| 488 | 1caef52e | Panagiotis Kanavos | tcs.SetException(new RetryException("Timed out too many times.", e)); |
| 489 | 1caef52e | Panagiotis Kanavos | } |
| 490 | 1caef52e | Panagiotis Kanavos | else |
| 491 | 1caef52e | Panagiotis Kanavos | {
|
| 492 | 1caef52e | Panagiotis Kanavos | Trace.TraceError( |
| 493 | 1caef52e | Panagiotis Kanavos | "[RETRY] Timed out after {0} ms. Will retry {1} more times\n{2}", Timeout, |
| 494 | 1caef52e | Panagiotis Kanavos | retryCount, e); |
| 495 | 1caef52e | Panagiotis Kanavos | Retry(original, retryCount - 1, tcs); |
| 496 | 1caef52e | Panagiotis Kanavos | } |
| 497 | 1caef52e | Panagiotis Kanavos | } |
| 498 | 1caef52e | Panagiotis Kanavos | else |
| 499 | 1caef52e | Panagiotis Kanavos | tcs.SetException(e); |
| 500 | 1caef52e | Panagiotis Kanavos | } |
| 501 | 1caef52e | Panagiotis Kanavos | }; |
| 502 | 1caef52e | Panagiotis Kanavos | }); |
| 503 | 1caef52e | Panagiotis Kanavos | return tcs.Task; |
| 504 | 1caef52e | Panagiotis Kanavos | } |
| 505 | 1caef52e | Panagiotis Kanavos | |
| 506 | 1caef52e | Panagiotis Kanavos | private HttpStatusCode GetStatusCode(WebException we) |
| 507 | 1caef52e | Panagiotis Kanavos | {
|
| 508 | 1caef52e | Panagiotis Kanavos | var statusCode = HttpStatusCode.RequestTimeout; |
| 509 | 1caef52e | Panagiotis Kanavos | if (we.Response != null) |
| 510 | 1caef52e | Panagiotis Kanavos | {
|
| 511 | 1caef52e | Panagiotis Kanavos | statusCode = ((HttpWebResponse) we.Response).StatusCode; |
| 512 | 1caef52e | Panagiotis Kanavos | this.StatusCode = statusCode; |
| 513 | 1caef52e | Panagiotis Kanavos | } |
| 514 | 1caef52e | Panagiotis Kanavos | return statusCode; |
| 515 | 1caef52e | Panagiotis Kanavos | } |
| 516 | 1caef52e | Panagiotis Kanavos | } |
| 517 | 1caef52e | Panagiotis Kanavos | |
| 518 | 1caef52e | Panagiotis Kanavos | public class RetryException:Exception |
| 519 | 1caef52e | Panagiotis Kanavos | {
|
| 520 | 1caef52e | Panagiotis Kanavos | public RetryException() |
| 521 | 1caef52e | Panagiotis Kanavos | :base() |
| 522 | 1caef52e | Panagiotis Kanavos | {
|
| 523 | 1caef52e | Panagiotis Kanavos | |
| 524 | 1caef52e | Panagiotis Kanavos | } |
| 525 | 1caef52e | Panagiotis Kanavos | |
| 526 | 1caef52e | Panagiotis Kanavos | public RetryException(string message) |
| 527 | 1caef52e | Panagiotis Kanavos | :base(message) |
| 528 | 1caef52e | Panagiotis Kanavos | {
|
| 529 | 1caef52e | Panagiotis Kanavos | |
| 530 | 1caef52e | Panagiotis Kanavos | } |
| 531 | 1caef52e | Panagiotis Kanavos | |
| 532 | 1caef52e | Panagiotis Kanavos | public RetryException(string message,Exception innerException) |
| 533 | 1caef52e | Panagiotis Kanavos | :base(message,innerException) |
| 534 | 1caef52e | Panagiotis Kanavos | {
|
| 535 | 1caef52e | Panagiotis Kanavos | |
| 536 | 1caef52e | Panagiotis Kanavos | } |
| 537 | 1caef52e | Panagiotis Kanavos | |
| 538 | 1caef52e | Panagiotis Kanavos | public RetryException(SerializationInfo info,StreamingContext context) |
| 539 | 1caef52e | Panagiotis Kanavos | :base(info,context) |
| 540 | 1caef52e | Panagiotis Kanavos | {
|
| 541 | 1caef52e | Panagiotis Kanavos | |
| 542 | 1caef52e | Panagiotis Kanavos | } |
| 543 | 1caef52e | Panagiotis Kanavos | } |
| 544 | 1caef52e | Panagiotis Kanavos | } |
| 545 | 1caef52e | Panagiotis Kanavos | </code></pre> |
| 546 | 1caef52e | Panagiotis Kanavos | </td>
|
| 547 | 1caef52e | Panagiotis Kanavos | </tr>
|
| 548 | 1caef52e | Panagiotis Kanavos | </tbody>
|
| 549 | 1caef52e | Panagiotis Kanavos | </table>
|
| 550 | 1caef52e | Panagiotis Kanavos | </div>
|
| 551 | 1caef52e | Panagiotis Kanavos | </body>
|
| 552 | 1caef52e | Panagiotis Kanavos | </html> |