C# Headers.HttpContentHeaders类代码示例

 public override void SetDefaultContentHeaders(Type type, HttpContentHeaders headers, MediaTypeHeaderValue mediaType)
 {
     base.SetDefaultContentHeaders(type, headers, mediaType);
     headers.ContentType = new MediaTypeHeaderValue(ApplicationJsonMediaType);
     this.SerializerSettings.Formatting = Formatting.None;
     this.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
 }

        public static void PopulateHeaders(this HttpPacket packet, HttpContentHeaders contentHeaders, HttpHeaders generalHeaders)
        {
            if (packet == null) throw new ArgumentNullException("packet");

            string hdrKey;
            foreach (var hdr in packet.Headers)
            {
                if (hdr.Key == null) continue;

                hdrKey = hdr.Key.Trim().ToUpperInvariant();

                if (hdrKey == "CONTENT-LENGTH") continue; //Content Length is automaitically calculated

                if (Array.IndexOf<String>(contentOnlyHeaders, hdrKey) >= 0)
                {
                    //TODO: Confirm if HttpResponseMessage/HttpRequestMessage will break headers into "," commas whereas in actuality header in Packet is an entire header
                    contentHeaders.Add(hdr.Key.Trim(), hdr.Value);
                }
                else
                {
                    generalHeaders.Add(hdr.Key.Trim(), hdr.Value);
                }

                //TODO: Check if a string can be parsed properly into the typed header

                //Test adding multiple headers of the same name will do. // Look up the Add overload that takes an ienumerable<string> to figure out its purpose.
            }
        }

        public override Stream GetStream(HttpContent parent, HttpContentHeaders headers)
        {
            if (parent == null)
            {
                throw Error.ArgumentNull("parent");
            }

            if (headers == null)
            {
                throw Error.ArgumentNull("headers");
            }

            string localFilePath;
            try
            {
                string filename = this.GetLocalFileName(headers);
                localFilePath = Path.Combine(this._rootPath, Path.GetFileName(filename));
            }
            catch (Exception e)
            {
                throw Error.InvalidOperation(e, Resources.MultipartStreamProviderInvalidLocalFileName);
            }

            // Add local file name 
            MultipartFileData fileData = new MultipartFileData(headers, localFilePath);
            this._fileData.Add(fileData);

            return File.Create(localFilePath, this._bufferSize, FileOptions.Asynchronous);
        }

        public void ContentLength_AddInvalidValueUsingUnusualCasing_ParserRetrievedUsingCaseInsensitiveComparison()
        {
            _headers = new HttpContentHeaders(new ComputeLengthHttpContent(() => 15));

            // Use uppercase header name to make sure the parser gets retrieved using case-insensitive comparison.
            Assert.Throws<FormatException>(() => { _headers.Add("CoNtEnT-LeNgTh", "this is invalid"); });
        }

        public static bool IsFileContent(HttpContent parent, HttpContentHeaders headers)
        {
            if (parent == null)
            {
                throw new ArgumentNullException("parent");
            }

            if (headers == null)
            {
                throw new ArgumentNullException("headers");
            }

            // For form data, Content-Disposition header is a requirement.
            ContentDispositionHeaderValue contentDisposition = headers.ContentDisposition;
            if (contentDisposition == null)
            {
                // If no Content-Disposition header was present.
                throw new InvalidOperationException("No Content-Disposition header found");
            }

            // The file name's existence indicates it is a file data.
            if (!string.IsNullOrEmpty(contentDisposition.FileName))
            {
                return true;
            }

            return false;
        }

 private static void CopyHeaders(HttpContentHeaders fromHeaders,
                                 HttpContentHeaders toHeaders)
 {
     foreach (KeyValuePair<string, IEnumerable<string>> header in fromHeaders) {
         toHeaders.Add(header.Key, header.Value);
     }
 }

        protected override Task OnWriteToStreamAsync(Type type, object value, Stream stream,
                                               HttpContentHeaders contentHeaders,
                                               FormatterContext formatterContext,
                                               TransportContext transportContext)
        {
            string callback;

               if (IsJsonpRequest(formatterContext.Response.RequestMessage, out callback))
               {
            return Task.Factory.StartNew(() =>
            {
             var writer = new StreamWriter(stream);
             writer.Write(callback + "(");
             writer.Flush();

             base.OnWriteToStreamAsync(type, value, stream, contentHeaders,
                             formatterContext, transportContext).Wait();

             writer.Write(")");
             writer.Flush();
            });
               }
               else
               {
            return base.OnWriteToStreamAsync(type, value, stream, contentHeaders, formatterContext, transportContext);
               }
        }

 public void AddRange(HttpContentHeaders headers)
 {
     foreach (var header in headers)
     {
         this._headers.Add(header.Key, header.Value);
     }
 }

 protected override System.Threading.Tasks.Task OnWriteToStreamAsync(Type type, object value, Stream stream, HttpContentHeaders contentHeaders, FormatterContext formatterContext, TransportContext transportContext)
 {
     return new TaskFactory().StartNew(() =>
                                                   {
                                                       new StreamWriter(stream).Write((string)value);
                                                   });
 }

 protected override System.Threading.Tasks.Task<object> OnReadFromStreamAsync(Type type, Stream stream, HttpContentHeaders contentHeaders, FormatterContext formatterContext)
 {
     return new TaskFactory<object>().StartNew(() =>
                                                   {
                                                       return new StreamReader(stream).ReadToEnd();
                                                   });
 }

        /// <summary>
        /// This body part stream provider examines the headers provided by the MIME multipart parser
        /// and decides whether it should return a file stream or a memory stream for the body part to be 
        /// written to.
        /// </summary>
        /// <param name="parent">The parent MIME multipart HttpContent instance.</param>
        /// <param name="headers">Header fields describing the body part</param>
        /// <returns>The <see cref="Stream"/> instance where the message body part is written to.</returns>
        public override Stream GetStream(HttpContent parent, HttpContentHeaders headers)
        {
            if (parent == null)
            {
                throw Error.ArgumentNull("parent");
            }

            if (headers == null)
            {
                throw Error.ArgumentNull("headers");
            }

            // For form data, Content-Disposition header is a requirement
            ContentDispositionHeaderValue contentDisposition = headers.ContentDisposition;
            if (contentDisposition != null)
            {
                // If we have a file name then write contents out to temporary file. Otherwise just write to MemoryStream
                if (!String.IsNullOrEmpty(contentDisposition.FileName))
                {
                    // We won't post process files as form data
                    _isFormData.Add(false);

                    return base.GetStream(parent, headers);
                }

                // We will post process this as form data
                _isFormData.Add(true);

                // If no filename parameter was found in the Content-Disposition header then return a memory stream.
                return new MemoryStream();
            }

            // If no Content-Disposition header was present.
            throw Error.InvalidOperation(Properties.Resources.MultipartFormDataStreamProviderNoContentDisposition, "Content-Disposition");
        }

 public virtual void SetContentType(Type type, HttpContentHeaders headers, string mediaType)
 {
     if (this.SupportedMediaTypes == null) {
         throw new InvalidOperationException(string.Format("{0} does not set support media types", base.GetType()));
     }
     headers.ContentType = this.SupportedMediaTypes.Contains(mediaType) ? mediaType : this.SupportedMediaTypes.First();
 }

        public void ContentLength_UseAddMethod_AddedValueCanBeRetrievedUsingProperty()
        {
            _headers = new HttpContentHeaders(() => { Assert.True(false, "Delegate called."); return 0; });
            _headers.TryAddWithoutValidation(HttpKnownHeaderNames.ContentLength, " 68 \r\n ");

            Assert.Equal(68, _headers.ContentLength);
        }

        public override Stream GetStream(HttpContent parent, HttpContentHeaders headers)
        {
            Stream stream = null;
            ContentDispositionHeaderValue contentDisposition = headers.ContentDisposition;
            if (contentDisposition != null)
            {
                if (!String.IsNullOrWhiteSpace(contentDisposition.FileName))
                {
                    string connectionString = ConfigurationManager.AppSettings["azureConnectionString"];
                    var containerName = ConfigurationManager.AppSettings["container"];
                    if (contentDisposition.Name.Contains("avatar"))
                        containerName = "avatar";
                    if (contentDisposition.Name.Contains("headerImage"))
                        containerName = "header";
                    CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);
                    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
                    

                    CloudBlobContainer blobContainer = blobClient.GetContainerReference(containerName);
                    CloudBlockBlob blob = blobContainer.GetBlockBlobReference(Guid.NewGuid().ToString() + ".jpg");
                    blob.Metadata.Add("source", ConfigurationManager.AppSettings["source"]);
                    if (_breweryDto != null) blob.Metadata.Add("breweryId", _breweryDto.Id.ToString());
                    if(_userDto != null) blob.Metadata.Add("username", _userDto.Username);
                    stream = blob.OpenWrite();
                    headers.ContentDisposition.FileName = blob.Name;
                }
            }
            return stream;
        }

        /// <summary>
        /// <para>This method assumes that all form segments come before the actual file data.</para>
        /// <para>Otherwise, GetLocalFileName will fail.</para>
        /// </summary>
        public override Stream GetStream(HttpContent parent, HttpContentHeaders headers)
        {
            if (headers.ContentDisposition.FileName == null)
            {
                return base.GetStream(parent, headers);
            }

            string flowFileName = null;
            try
            {
                flowFileName = GetLocalFileName(headers);
            }
            catch (Exception ex)
            {
                throw new Exception("Flow chunk information was not properly transmitted before the chunk payload.", ex);
            }

            

            FileStream flowFileStream;

            var path = Path.Combine(RootPath, flowFileName);


            flowFileStream = File.Open(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Write);
            flowFileStream.SetLength(MetaData.FlowTotalSize);

            flowFileStream.Seek(MetaData.FileOffset, 0);

            return flowFileStream;
        }