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 |