This should hopefully make the build work.

Dapplo.Confluence.PCL/project.json

@@ -5,7 +5,7 @@
     "dnxcore50.app": {}
   },
   "dependencies": {
-    "Dapplo.HttpExtensions": "0.4.22",
+    "Dapplo.HttpExtensions": "0.4.25",
     "Microsoft.NETCore": "5.0.0",
     "Microsoft.NETCore.Portable.Compatibility": "1.0.0",
     "System.ComponentModel": "4.0.0",

Dapplo.Confluence.Shared/ConfluenceApi.cs

@@ -99,12 +99,17 @@ public void SetBasicAuthentication(string user, string password)
 		/// <param name="contentId">Id of the content to attach to</param>
 		/// <param name="content">the content can be anything what Dapplo.HttpExtensions supports</param>
 		/// <param name="cancellationToken">CancellationToken</param>
-		/// <returns>Attachment</returns>
+		/// <returns>Result with Attachment items</returns>
 		public async Task<Result<Attachment>> AttachAsync(string contentId, object content, CancellationToken cancellationToken = default(CancellationToken))
 		{
 			_behaviour.MakeCurrent();
 			var attachUri = ConfluenceBaseUri.AppendSegments("content", contentId, "child", "attachments");
-			return await attachUri.PostAsync<Result<Attachment>>(content, cancellationToken).ConfigureAwait(false);
+			var response = await attachUri.PostAsync<HttpResponse<Result<Attachment>, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
 		}
 		#endregion
 
@@ -125,7 +130,12 @@ public async Task<TResponse> PictureAsync<TResponse>(Attachment attachment, Canc
 			{
 				Path = attachment.Links.Download
 			};
-			return await attachmentUriBuilder.Uri.GetAsAsync<TResponse>(cancellationToken).ConfigureAwait(false);
+			var response = await attachmentUriBuilder.Uri.GetAsAsync<HttpResponse<TResponse, string>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse);
+			}
+			return response.Response;
 		}
 
 		/// <summary>
@@ -143,7 +153,12 @@ public async Task<TResponse> PictureAsync<TResponse>(Picture picture, Cancellati
 			{
 				Path = picture.Path
 			};
-			return await pictureUriBuilder.Uri.GetAsAsync<TResponse>(cancellationToken).ConfigureAwait(false);
+			var response = await pictureUriBuilder.Uri.GetAsAsync<HttpResponse<TResponse, string>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse);
+			}
+			return response.Response;
 		}
 
 		/// <summary>
@@ -156,17 +171,59 @@ public async Task<Space> SpaceAsync(string spaceKey, CancellationToken cancellat
 		{
 			var spaceUri = ConfluenceBaseUri.AppendSegments("space", spaceKey);
 			_behaviour.MakeCurrent();
-			return await spaceUri.GetAsAsync<Space>(cancellationToken).ConfigureAwait(false);
+			var response = await spaceUri.GetAsAsync<HttpResponse<Space, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
+		}
+
+		/// <summary>
+		///     Get Content information see <a href="https://docs.atlassian.com/confluence/REST/latest/#d3e164">here</a>
+		/// </summary>
+		/// <param name="contentId">content id</param>
+		/// <param name="cancellationToken">CancellationToken</param>
+		/// <returns>Content</returns>
+		public async Task<Content> ContentAsync(string contentId, CancellationToken cancellationToken = default(CancellationToken))
+		{
+			var contentUri = ConfluenceBaseUri.AppendSegments("content", contentId);
+			_behaviour.MakeCurrent();
+			var response = await contentUri.GetAsAsync<HttpResponse<Content, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
+		}
+
+		/// <summary>
+		///     Get Content information see <a href="https://docs.atlassian.com/confluence/REST/latest/#d3e164">here</a>
+		/// </summary>
+		/// <param name="contentId">content id</param>
+		/// <param name="cancellationToken">CancellationToken</param>
+		/// <returns>List with Content</returns>
+		public async Task<IList<Content>> ChildrenAsync(string contentId, CancellationToken cancellationToken = default(CancellationToken))
+		{
+			var contentUri = ConfluenceBaseUri.AppendSegments("content", contentId, "child").ExtendQuery("expand", "page");
+			_behaviour.MakeCurrent();
+			var response = await contentUri.GetAsAsync<HttpResponse<Child, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response.Result.Results;
 		}
 
 		/// <summary>
+		///     Possible since 5.7 
 		///     Search for issues, with a CQL (e.g. from a filter) see <a href="https://docs.atlassian.com/confluence/REST/latest/#d2e4539">here</a>
 		/// </summary>
 		/// <param name="cql">Confluence Query Language, like SQL, for the search</param>
 		/// <param name="cqlContext">the execution context for CQL functions, provides current space key and content id. If this is not provided some CQL functions will not be available.</param>
 		/// <param name="limit">Maximum number of results returned, default is 20</param>
 		/// <param name="cancellationToken">CancellationToken</param>
-		/// <returns>result with content</returns>
+		/// <returns>Result with content items</returns>
 		public async Task<Result<Content>> SearchAsync(string cql, string cqlContext = null, int limit = 20, CancellationToken cancellationToken = default(CancellationToken))
 		{
 			_behaviour.MakeCurrent();
@@ -176,7 +233,13 @@ public async Task<Result<Content>> SearchAsync(string cql, string cqlContext = n
 			{
 				searchUri = searchUri.ExtendQuery("cqlcontext", cqlContext);
 			}
-			return await searchUri.GetAsAsync<Result<Content>>(cancellationToken).ConfigureAwait(false);
+
+			var response = await searchUri.GetAsAsync<HttpResponse<Result<Content>, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
 		}
 
 		/// <summary>
@@ -210,7 +273,12 @@ public async Task<Result<Content>> ContentByTitleAsync(string spaceKey, string t
 						"title", title
 					},
 				});
-			return await searchUri.GetAsAsync<Result<Content>>(cancellationToken).ConfigureAwait(false);
+			var response = await searchUri.GetAsAsync<HttpResponse<Result<Content>, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
 		}
 
 
@@ -224,7 +292,12 @@ public async Task<User> MyselfAsync(CancellationToken cancellationToken = defaul
 		{
 			var myselfUri = ConfluenceBaseUri.AppendSegments("user","current");
 			_behaviour.MakeCurrent();
-			return await myselfUri.GetAsAsync<User>(cancellationToken).ConfigureAwait(false);
+			var response = await myselfUri.GetAsAsync<HttpResponse<User, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
 		}
 
 		/// <summary>
@@ -238,7 +311,12 @@ public async Task<User> UserAsync(string username, CancellationToken cancellatio
 		{
 			var userUri = ConfluenceBaseUri.AppendSegments("user").ExtendQuery("username", username);
 			_behaviour.MakeCurrent();
-			return await userUri.GetAsAsync<User>(cancellationToken).ConfigureAwait(false);
+			var response = await userUri.GetAsAsync<HttpResponse<User, Error>>(cancellationToken).ConfigureAwait(false);
+			if (response.HasError)
+			{
+				throw new Exception(response.ErrorResponse.Message);
+			}
+			return response.Response;
 		}
 
 		#endregion

Dapplo.Confluence.Shared/Dapplo.Confluence.Shared.projitems

@@ -10,6 +10,8 @@
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)ConfluenceApi.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Entities\Child.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Entities\Error.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Entities\Results.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Entities\Metadata.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Entities\Attachment.cs" />

Dapplo.Confluence.Shared/Entities/Child.cs

@@ -0,0 +1,48 @@
+//  Dapplo - building blocks for desktop applications
+//  Copyright (C) 2015-2016 Dapplo
+// 
+//  For more information see: http://dapplo.net/
+//  Dapplo repositories are hosted on GitHub: https://github.com/dapplo
+// 
+//  This file is part of Dapplo.Confluence
+// 
+//  Dapplo.Confluence is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+// 
+//  Dapplo.Confluence is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+// 
+//  You should have Config a copy of the GNU Lesser General Public License
+//  along with Dapplo.Confluence. If not, see <http://www.gnu.org/licenses/lgpl.txt>.
+
+#region using
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+#endregion
+
+namespace Dapplo.Confluence.Entities
+{
+	/// <summary>
+	///     Child information
+	///     See: https://docs.atlassian.com/confluence/REST/latest
+	/// </summary>
+	[DataContract]
+	public class Child
+	{
+		[DataMember(Name = "page")]
+		public Result<Content> Result { get; set; }
+
+		[DataMember(Name = "_expandable")]
+		public IDictionary<string, string> Expandables { get; set; }
+
+		[DataMember(Name = "_links")]
+		public Links Links { get; set; }
+	}
+}

Dapplo.Confluence.Shared/Entities/Error.cs

@@ -0,0 +1,44 @@
+//  Dapplo - building blocks for desktop applications
+//  Copyright (C) 2015-2016 Dapplo
+// 
+//  For more information see: http://dapplo.net/
+//  Dapplo repositories are hosted on GitHub: https://github.com/dapplo
+// 
+//  This file is part of Dapplo.Confluence
+// 
+//  Dapplo.Confluence is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+// 
+//  Dapplo.Confluence is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+// 
+//  You should have Config a copy of the GNU Lesser General Public License
+//  along with Dapplo.Confluence. If not, see <http://www.gnu.org/licenses/lgpl.txt>.
+
+#region using
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+#endregion
+
+namespace Dapplo.Confluence.Entities
+{
+	/// <summary>
+	///     Error information
+	/// </summary>
+	[DataContract]
+	public class Error
+	{
+		[DataMember(Name = "statusCode")]
+		public int StatusCode { get; set; }
+
+		[DataMember(Name = "message")]
+		public string Message { get; set; }
+	}
+}

Dapplo.Confluence.Tests/ConfluenceTests.cs

@@ -32,22 +32,21 @@ namespace Dapplo.Confluence.Tests
 	public class ConfluenceTests
 	{
 		// Test against a well known Confluence
-		private static readonly Uri TestConfluenceUri = new Uri("https://greenshot.atlassian.net/wiki");
+		private static readonly Uri TestConfluenceUri = new Uri("https://confluence.cip4.org/");
 
 		private readonly ConfluenceApi _confluenceApi;
 
 		public ConfluenceTests(ITestOutputHelper testOutputHelper)
 		{
 			XUnitLogger.RegisterLogger(testOutputHelper, LogLevel.Verbose);
 			_confluenceApi = new ConfluenceApi(TestConfluenceUri);
-			_confluenceApi.SetBasicAuthentication("<username>", "<password>");
+			//_confluenceApi.SetBasicAuthentication("<username>", "<password>");
 		}
 
 		[Fact]
 		public async Task TestSearch()
 		{
-			var searchResult = await _confluenceApi.SearchAsync("text ~ \"greenshot\"");
-
+			var searchResult = await _confluenceApi.SearchAsync("text ~ \"CIP4\"");
 			Assert.NotNull(searchResult);
 			Assert.True(searchResult.Results.Count > 0);
 

Dapplo.Confluence.Tests/Dapplo.Confluence.Tests.csproj

@@ -33,8 +33,8 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Dapplo.HttpExtensions, Version=0.4.22.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\Dapplo.HttpExtensions.0.4.22.0\lib\net46\Dapplo.HttpExtensions.dll</HintPath>
+    <Reference Include="Dapplo.HttpExtensions, Version=0.4.25.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\Dapplo.HttpExtensions.0.4.25.0\lib\net46\Dapplo.HttpExtensions.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Dapplo.LogFacade, Version=0.2.13.0, Culture=neutral, processorArchitecture=MSIL">
@@ -74,6 +74,9 @@
     <Compile Include="XUnitLogger.cs" />
   </ItemGroup>
   <ItemGroup>
+    <None Include="JsonTestFiles\error.json">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <None Include="JsonTestFiles\attachments.json">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>

Dapplo.Confluence.Tests/JsonParseTests.cs

@@ -38,7 +38,7 @@ public JsonParseTests(ITestOutputHelper testOutputHelper)
 		}
 
 		[Fact]
-		public void TestParseServerInfo()
+		public void TestParseContent()
 		{
 			var json = File.ReadAllText("JsonTestFiles/content.json");
 			var content = SimpleJson.DeserializeObject<Content>(json);

Dapplo.Confluence.Tests/JsonTestFiles/error.json

@@ -0,0 +1,4 @@
+{
+	"statusCode": 500,
+	"message": "com.sun.jersey.api.ParamException$PathParamException: com.atlassian.confluence.api.service.exceptions.BadRequestException: Can't parse as a ContentId: search"
+}

Dapplo.Confluence.Tests/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Dapplo.HttpExtensions" version="0.4.22.0" targetFramework="net46" />
+  <package id="Dapplo.HttpExtensions" version="0.4.25.0" targetFramework="net46" />
   <package id="Dapplo.LogFacade" version="0.2.13.0" targetFramework="net46" />
   <package id="System.ComponentModel" version="4.0.0" targetFramework="net46" />
   <package id="System.Runtime.Serialization.Primitives" version="4.0.10" targetFramework="net46" />

Dapplo.Confluence.WpfExample/Dapplo.Confluence.WpfExample.csproj

@@ -36,8 +36,8 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Dapplo.HttpExtensions, Version=0.4.22.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\Dapplo.HttpExtensions.0.4.22.0\lib\net46\Dapplo.HttpExtensions.dll</HintPath>
+    <Reference Include="Dapplo.HttpExtensions, Version=0.4.25.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\Dapplo.HttpExtensions.0.4.25.0\lib\net46\Dapplo.HttpExtensions.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Dapplo.LogFacade, Version=0.2.13.0, Culture=neutral, processorArchitecture=MSIL">

Dapplo.Confluence.WpfExample/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Dapplo.HttpExtensions" version="0.4.22.0" targetFramework="net46" />
+  <package id="Dapplo.HttpExtensions" version="0.4.25.0" targetFramework="net46" />
   <package id="Dapplo.LogFacade" version="0.2.13.0" targetFramework="net46" />
   <package id="System.ComponentModel" version="4.0.0" targetFramework="net46" />
   <package id="System.Runtime.Serialization.Primitives" version="4.0.10" targetFramework="net46" />