| 1 | #Region "Microsoft.VisualBasic::5b37ca2ecbcbc5969c0b2eb7bdb64de2, Microsoft.VisualBasic.Core\Net\HTTP\Multipart.vb" |
| 2 | |
| 3 | ' Author: |
| 4 | ' |
| 5 | ' asuka (amethyst.asuka@gcmodeller.org) |
| 6 | ' xie (genetics@smrucc.org) |
| 7 | ' xieguigang (xie.guigang@live.com) |
| 8 | ' |
| 9 | ' Copyright (c) 2018 GPL3 Licensed |
| 10 | ' |
| 11 | ' |
| 12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
| 13 | ' |
| 14 | ' |
| 15 | ' This program is free software: you can redistribute it and/or modify |
| 16 | ' it under the terms of the GNU General Public License as published by |
| 17 | ' the Free Software Foundation, either version 3 of the License, or |
| 18 | ' (at your option) any later version. |
| 19 | ' |
| 20 | ' This program is distributed in the hope that it will be useful, |
| 21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | ' GNU General Public License for more details. |
| 24 | ' |
| 25 | ' You should have received a copy of the GNU General Public License |
| 26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 27 | |
| 28 | |
| 29 | |
| 30 | ' /********************************************************************************/ |
| 31 | |
| 32 | ' Summaries: |
| 33 | |
| 34 | ' Class MultipartForm |
| 35 | ' |
| 36 | ' Function: POST |
| 37 | ' |
| 38 | ' Sub: (+2 Overloads) Add, Dump |
| 39 | ' |
| 40 | ' |
| 41 | ' /********************************************************************************/ |
| 42 | |
| 43 | #End Region |
| 44 | |
| 45 | Imports System.IO |
| 46 | Imports System.Net |
| 47 | Imports System.Runtime.CompilerServices |
| 48 | Imports System.Text |
| 49 | Imports Microsoft.VisualBasic.Language |
| 50 | Imports Microsoft.VisualBasic.Linq |
| 51 | Imports Microsoft.VisualBasic.Net.Protocols |
| 52 | |
| 53 | Namespace Net.Http |
| 54 | |
| 55 | ' https://stackoverflow.com/questions/566462/upload-files-with-httpwebrequest-multipart-form-data |
| 56 | |
| 57 | Public Class MultipartForm |
| 58 | |
| 59 | ReadOnly buffer As New MemoryStream |
| 60 | ''' <summary> |
| 61 | ''' 需要使用<see cref="Encoding.ASCII"/>来进行编码 |
| 62 | ''' </summary> |
| 63 | ReadOnly boundary$ = "---------------------------" & DateTime.Now.Ticks.ToString("x") |
| 64 | |
| 65 | ''' <summary> |
| 66 | ''' Add form data.(添加键值对数据) |
| 67 | ''' </summary> |
| 68 | ''' <param name="name$"></param> |
| 69 | ''' <param name="value$"></param> |
| 70 | ''' <remarks> |
| 71 | ''' 字符串键值对是使用<see cref="Encoding.UTF8"/>编码的 |
| 72 | ''' </remarks> |
| 73 | Public Sub Add(name$, value$) |
| 74 | With Me.buffer |
| 75 | Call .WriteLine(, Encoding.ASCII) |
| 76 | Call .WriteLine("--" & boundary, Encoding.ASCII) |
| 77 | Call .WriteLine($"Content-Disposition: form-data; name=""{name}""") |
| 78 | Call .WriteLine() |
| 79 | Call .Write(value) |
| 80 | End With |
| 81 | End Sub |
| 82 | |
| 83 | ''' <summary> |
| 84 | ''' 添加文件或者数据包等 |
| 85 | ''' </summary> |
| 86 | ''' <param name="name$"></param> |
| 87 | ''' <param name="buffer"></param> |
| 88 | ''' <remarks> |
| 89 | ''' |
| 90 | ''' </remarks> |
| 91 | Public Sub Add(name$, |
| 92 | buffer As IEnumerable(Of Byte), |
| 93 | Optional fileName$ = "UnknownStream", |
| 94 | Optional contentType$ = ContentTypes.Unknown) |
| 95 | |
| 96 | With Me.buffer |
| 97 | Call .WriteLine(, Encoding.ASCII) |
| 98 | Call .WriteLine("--" & boundary, Encoding.ASCII) |
| 99 | Call .WriteLine($"Content-Disposition: form-data; name=""{name}""; filename=""{fileName}""") |
| 100 | Call .WriteLine($"Content-Type: {contentType}") |
| 101 | Call .WriteLine() |
| 102 | End With |
| 103 | |
| 104 | With buffer.ToArray |
| 105 | Call Me.buffer.Write(.ByRef, Scan0, .Length) |
| 106 | End With |
| 107 | |
| 108 | With Me.buffer |
| 109 | Call .WriteLine(, Encoding.ASCII) |
| 110 | Call .WriteLine("--" & boundary & "--", Encoding.ASCII) |
| 111 | End With |
| 112 | End Sub |
| 113 | |
| 114 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 115 | Public Sub Dump(path As String) |
| 116 | Call buffer.ToArray.FlushStream(path) |
| 117 | End Sub |
| 118 | |
| 119 | ''' <summary> |
| 120 | ''' POST this multipart form package to a specific web <paramref name="api"/> |
| 121 | ''' </summary> |
| 122 | ''' <param name="api$"></param> |
| 123 | ''' <param name="headers"></param> |
| 124 | ''' <returns></returns> |
| 125 | Public Function POST(api$, Optional headers As Dictionary(Of String, String) = Nothing) As String |
| 126 | Dim request As HttpWebRequest = WebRequest.Create(api) |
| 127 | request.ContentType = "multipart/form-data; boundary=" & boundary |
| 128 | request.Method = "POST" |
| 129 | request.KeepAlive = True |
| 130 | request.Credentials = CredentialCache.DefaultCredentials |
| 131 | |
| 132 | For Each header In headers.SafeQuery |
| 133 | Call request.Headers.Add(header.Key, header.Value) |
| 134 | Next |
| 135 | |
| 136 | Using requestStream As Stream = request.GetRequestStream |
| 137 | buffer.Position = Scan0 |
| 138 | requestStream.Write(buffer.ToArray, Scan0, buffer.Length) |
| 139 | requestStream.Flush() |
| 140 | End Using |
| 141 | |
| 142 | Using response = request.GetResponse, responseStream As Stream = response.GetResponseStream |
| 143 | Using responseReader As New IO.StreamReader(responseStream) |
| 144 | Dim responseText = responseReader.ReadToEnd() |
| 145 | Return responseText |
| 146 | End Using |
| 147 | End Using |
| 148 | End Function |
| 149 | End Class |
| 150 | End Namespace |