VB6多线程执行Get请求(基于Curl库)

HTTPClient_Multi_Get系列函数

说明

基于Curl库,多线程Get方法请求内容。
支持http和https协议。
支持gzip、deflate、br自动解压
持续使用内存会不断增长，达到一定峰值后不会继续增长，使用完后内存自动回收
支持返回响应头
支持设置超时时间

参数

HTTPClient_Multi_New
MultiObj:多线程管理对象
MaxThreads:最大线程数

HTTPClient_Multi_AddGetTask
MultiObj:多线程管理对象
CurlTask:任务对象
URL:网址，支持http和https
RequestHeaders:向网址发起的请求头
IsUTF8:是否是UTF8编码。0-非UTF8编码，1-UTF8字符
ConnectTimeOut:连接超时时间，单位秒
TimeOut:总超时时间，单位秒
ResponseAutoDecode:是否自动解码返回内容。比如IsUTF8=1时，自动将UTF8结果字符解码为Ansi字符

HTTPClient_Multi_IsFinish
MultiObj:多线程管理对象
OK_Task:成功的任务对象
StrErr:错误信息

HTTPClient_Multi_GetResponse
CurlTask:任务对象
ResponseHeaders:请求后得到的响应头

HTTPClient_Multi_TaskFree
MultiObj:多线程管理对象
CurlTask:任务对象

HTTPClient_Multi_Free
MultiObj:多线程管理对象

引用

Public Declare Function HTTPClient_Multi_New Lib "VB6Net.dll" (ByRef MultiObj As Long, Optional ByVal MaxThreads As Integer = 10) As String
Public Declare Function HTTPClient_Multi_AddGetTask Lib "VB6Net.dll" (ByRef MultiObj As Long, ByRef CurlTask As Long, ByRef URL As String, Optional ByRef RequestHeaders As String = "", Optional ByVal IsUTF8 As Integer = 1, Optional ByVal ConnectTimeOut As Integer = 5, Optional ByVal TimeOut As Integer = 60, Optional ByVal ResponseAutoDecode As Integer = 1) As String
Public Declare Function HTTPClient_Multi_IsFinish Lib "VB6Net.dll" (ByRef MultiObj As Long, ByRef OK_Task As Long, ByRef StrErr As String) As Boolean
Public Declare Function HTTPClient_Multi_GetResponse Lib "VB6Net.dll" (ByRef CurlTask As Long, Optional ByRef ResponseHeaders As String = "") As String
Public Declare Sub HTTPClient_Multi_TaskFree Lib "VB6Net.dll" (ByRef MultiObj As Long, ByRef CurlTask As Long)
Public Declare Sub HTTPClient_Multi_Free Lib "VB6Net.dll" (ByRef MultiObj As Long)

封装UserControl后的使用示例

Dim Multi_Tasks() As String
Dim Multi_IsFinish As Boolean

Sub DoTask()
ReDim Multi_Tasks(2, 4)

Multi_Tasks(1, 1) = "https://www.baidu.com/"
Multi_Tasks(2, 1) = "1"
Multi_Tasks(1, 2) = "https://www.qq.com/"
Multi_Tasks(2, 2) = "0"
Multi_Tasks(1, 3) = "https://www.iqiyi.com/"
Multi_Tasks(2, 3) = "1"
Multi_Tasks(1, 4) = "https://www.sina.com.cn/"
Multi_Tasks(2, 4) = "1"

Multi_IsFinish = False
With MultiNet1 'MultiNet1是封装的UserControl 详见示例
.Multi_ThreadMax = 4
For i = 1 To UBound(Multi_Tasks, 2)
.AddGetTask Multi_Tasks(1, i), , Multi_Tasks(2, i)
Next
.Start
End With

Do While Multi_IsFinish = False
DoEvents
Loop

ShowLog "执行完毕"

End Sub

Private Sub MultiNet1_OnFinish(ByVal Msg As String)
Multi_IsFinish = True
ShowLog Msg
End Sub

Private Sub MultiNet1_OnTaskFinish(ByVal TaskIndex As Integer, ByVal ThreadIndex As Integer, ByVal ThreadAddr As Long, ResponseHeaders As String, ResponseBody As String)
ShowLog "线程" & ThreadIndex & "(" & ThreadAddr & "):执行完毕" & vbTab & " √ " & TaskIndex & "-" & Multi_Tasks(1, TaskIndex) & vbTab & VBA.Left(ResponseBody, 200) & ".." & vbCrLf
End Sub

例子

运行结果