WebGet
From HashVB
(Redirected from HTTP client)
Example usages:
' Downloads to App.Path & "\" [Remote Filename] WebGetBinary "http://www.google.com/intl/en/images/logo.gif" ' Downloads to "C:\a.gif" WebGetBinary "http://www.google.com/intl/en/images/logo.gif", "C:\a.gif" ' Retrieves HTML and outputs to a string sHTML = WebGetHTML("http://www.google.com")
Put the following code in a module.
Option Explicit Public Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long Public Declare Function InternetOpenUrl Lib "wininet.dll" Alias "InternetOpenUrlA" (ByVal hInternetSession As Long, ByVal sURL As String, ByVal sHeaders As String, ByVal lHeadersLength As Long, ByVal lFlags As Long, ByVal lContext As Long) As Long Public Declare Function InternetReadFileString Lib "wininet.dll" Alias "InternetReadFile" (ByVal hFile As Long, ByVal Buffer As String, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer Public Declare Function InternetReadFile Lib "wininet.dll" (ByVal hFile As Long, ByRef pBuffer As Byte, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer Public Declare Function InternetCloseHandle Lib "wininet.dll" (ByVal hInet As Long) As Integer Public Const IF_FROM_CACHE = &H1000000 Public Const IF_MAKE_PERSISTENT = &H2000000 Public Const IF_NO_CACHE_WRITE = &H4000000 Private Const BUFFER_LEN = 256 Public Function WebGetHTML(sURL As String) As String Dim sBuffer As String * BUFFER_LEN, iResult As Integer, sData As String Dim hInternet As Long, hSession As Long, lReturn As Long hSession = InternetOpen("vb wininet", 1, vbNullString, vbNullString, 0) If hSession Then hInternet = InternetOpenUrl(hSession, sURL, vbNullString, 0, IF_NO_CACHE_WRITE, 0) If hInternet Then DoEvents iResult = InternetReadFileString(hInternet, sBuffer, BUFFER_LEN, lReturn) sData = sBuffer Do While lReturn <> 0 DoEvents iResult = InternetReadFileString(hInternet, sBuffer, BUFFER_LEN, lReturn) sData = sData + Mid(sBuffer, 1, lReturn) Loop End If iResult = InternetCloseHandle(hInternet) WebGetHTML = sData End Function Public Sub WebGetBinary(sURL As String, Optional sFile As String) Dim bBuffer() As Byte, iResult As Integer Dim hInternet As Long, hSession As Long, lReturn As Long Dim iFile As Integer hSession = InternetOpen("vb wininet", 1, vbNullString, vbNullString, 0) If hSession Then hInternet = InternetOpenUrl(hSession, sURL, vbNullString, 0, IF_NO_CACHE_WRITE, 0) If hInternet Then If sFile = "" Then sFile = Mid(sURL, InStrRev(sURL, "/") + 1) iFile = FreeFile Open sFile For Binary Access Write As #iFile DoEvents ReDim bBuffer(0 To BUFFER_LEN - 1) iResult = InternetReadFile(hInternet, bBuffer(0), BUFFER_LEN, lReturn) Put #iFile, , bBuffer Do While lReturn <> 0 DoEvents ReDim bBuffer(0 To BUFFER_LEN - 1) iResult = InternetReadFile(hInternet, bBuffer(0), BUFFER_LEN, lReturn) If lReturn > 0 Then ReDim Preserve bBuffer(0 To lReturn - 1) Put #iFile, , bBuffer End If Loop Close #iFile End If iResult = InternetCloseHandle(hInternet) End Sub