VBA socket connection in Office 2010 - windows

Question

Short Question
Is there a library that is supposed to replace mswinsoc.osx used to create and maintain socket connections within VBA applications?
Background
I am trying to create socket connection(s) within a Visio 2010 Professional document. I have found a way to register mswinsoc.osx on Windows 7 here, but this seems very strange that Microsoft would get rid of a library to make socket connections without having something (better) to replace it. To add to my concern, there are little to no examples using the Winsoc library for Office 2010. I am not supporting old documents, so Winsoc is not a requirement; it's just the closet thing I know will work.
Additional Thoughts
I have found some very useful VBA stuff for Visio here that lead me to believe that there should be a new solution.
Any examples of socket connections for Office 2010 or insight to what happened to mswinsoc.osx would be of great help.

Answer 1

I made vba login client (ws2_32.dll) example
It may works fine (I tested.)
Tested Screen Image Here
ServerMain.c
#undef UNICODE
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
// Need to link with Ws2_32.lib
#pragma comment (lib, "Ws2_32.lib")
#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "16001"
static char LoginCheck(char * recvbuf);
int main(void)
{
WSADATA wsaData;
int iResult;
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket = INVALID_SOCKET;
struct addrinfo *result = NULL;
struct addrinfo hints;
int iSendResult;
char recvbuf[DEFAULT_BUFLEN];
int recvbuflen = DEFAULT_BUFLEN;
char sendbuf[DEFAULT_BUFLEN];
int sendbuflen = DEFAULT_BUFLEN;
printf("Excel Login Server Start..\n");
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed with error: %d\n", iResult);
return 1;
}
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
// Resolve the server address and port
iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
if (iResult != 0) {
printf("getaddrinfo failed with error: %d\n", iResult);
WSACleanup();
return 1;
}
// Create a SOCKET for connecting to server
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (ListenSocket == INVALID_SOCKET) {
printf("socket failed with error: %ld\n", WSAGetLastError());
freeaddrinfo(result);
WSACleanup();
return 1;
}
// Setup the TCP listening socket
iResult = bind(ListenSocket, result->ai_addr, (int)result->ai_addrlen);
if (iResult == SOCKET_ERROR) {
printf("bind failed with error: %d\n", WSAGetLastError());
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
return 1;
}
freeaddrinfo(result);
iResult = listen(ListenSocket, SOMAXCONN);
if (iResult == SOCKET_ERROR) {
printf("listen failed with error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
printf("Server Is running at port %s\n", DEFAULT_PORT);
while(1) {
// Accept a client socket
ClientSocket = accept(ListenSocket, NULL, NULL);
if (ClientSocket == INVALID_SOCKET) {
printf("accept failed with error: %d\n", WSAGetLastError());
//closesocket(ListenSocket);
//WSACleanup();
//return 1;
}
// recieve data from client
iResult = recv(ClientSocket, recvbuf, recvbuflen, 0);
if (iResult > 0) {
printf("Bytes received: %d\n", iResult);
recvbuf[iResult] = '\0';
printf("Recieved string : %s\n", recvbuf);
// id, pw check
sendbuf[0] = LoginCheck(recvbuf); //success code
sendbuf[1] = '\0';
// Echo the buffer back to the sender
iSendResult = send(ClientSocket, sendbuf, 1, 0);
if (iSendResult == SOCKET_ERROR) {
printf("send failed with error: %d\n", WSAGetLastError());
//closesocket(ClientSocket);
//WSACleanup();
//return 1;
}
printf("Bytes sent: %d\n", iSendResult);
}
else if (iResult == 0)
printf("Connection closing...\n");
else {
printf("recv failed with error: %d\n", WSAGetLastError());
//closesocket(ClientSocket);
//WSACleanup();
//return 1;
}
Sleep(10);
}
// No longer need server socket
closesocket(ListenSocket);
// shutdown the connection since we're done
iResult = shutdown(ClientSocket, SD_SEND);
if (iResult == SOCKET_ERROR) {
printf("shutdown failed with error: %d\n", WSAGetLastError());
closesocket(ClientSocket);
WSACleanup();
return 1;
}
// cleanup
closesocket(ClientSocket);
WSACleanup();
return 0;
}
// check if login info correct (input : "id"|"pw")
static char LoginCheck(char * recvbuf)
{
char *id, *pw;
if (!recvbuf | !recvbuf[0])
return 0;
// temp id, pw info (later, may use db info)
id = strtok(recvbuf, "|");
if (!id)
return 0;
if (strcmp(id, "testid"))
return 0;
pw = strtok(NULL, "|");
if (!pw)
return 0;
if (strcmp(pw, "testpw"))
return 0;
return 's'; //success
}
Server.vb
'
' reference site https://stackoverflow.com/questions/49028281/vba-with-winsock2-send-sends-wrong-data
' edited by robotmanya (2018.10.28) (https://blog.naver.com/monkey5255/221386590654)
' Constants ----------------------------------------------------------
Const ip = "127.0.0.1"
Const port = "16001"
Const INVALID_SOCKET = -1
Const WSADESCRIPTION_LEN = 256
Const SOCKET_ERROR = -1
Const SD_SEND = 1
' Typ definitions ----------------------------------------------------
Private Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To WSADESCRIPTION_LEN) As Byte
szSystemStatus(0 To WSADESCRIPTION_LEN) As Byte
iMaxSockets As Integer
iMaxUdpDg As Integer
lpVendorInfo As Long
End Type
Private Type ADDRINFO
ai_flags As Long
ai_family As Long
ai_socktype As Long
ai_protocol As Long
ai_addrlen As Long
ai_canonName As LongPtr 'strptr
ai_addr As LongPtr 'p sockaddr
ai_next As LongPtr 'p addrinfo
End Type
' Enums ---------------------------------------------------------------
Enum AF
AF_UNSPEC = 0
AF_INET = 2
AF_IPX = 6
AF_APPLETALK = 16
AF_NETBIOS = 17
AF_INET6 = 23
AF_IRDA = 26
AF_BTH = 32
End Enum
Enum sock_type
SOCK_STREAM = 1
SOCK_DGRAM = 2
SOCK_RAW = 3
SOCK_RDM = 4
SOCK_SEQPACKET = 5
End Enum
' External functions --------------------------------------------------
Public Declare Function WSAStartup Lib "ws2_32.dll" (ByVal wVersionRequested As Integer, ByRef data As WSADATA) As Long
Public Declare Function connect Lib "ws2_32.dll" (ByVal socket As Long, ByVal SOCKADDR As Long, ByVal namelen As Long) As Long
Public Declare Sub WSACleanup Lib "ws2_32.dll" ()
Private Declare PtrSafe Function GetAddrInfo Lib "ws2_32.dll" Alias "getaddrinfo" (ByVal NodeName As String, ByVal ServName As String, ByVal lpHints As LongPtr, lpResult As LongPtr) As Long
Public Declare Function ws_socket Lib "ws2_32.dll" Alias "socket" (ByVal AF As Long, ByVal stype As Long, ByVal Protocol As Long) As Long
Public Declare Function closesocket Lib "ws2_32.dll" (ByVal socket As Long) As Long
Private Declare PtrSafe Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal length As Long)
Public Declare Function Send Lib "ws2_32.dll" Alias "send" (ByVal s As Long, ByVal buf As String, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function Recv Lib "ws2_32.dll" Alias "recv" (ByVal s As Long, ByRef buf As Byte, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function SendWithPtr Lib "ws2_32.dll" Alias "send" (ByVal s As Long, ByVal bufPtr As Long, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function shutdown Lib "ws2_32.dll" (ByVal s As Long, ByVal how As Long) As Long
Private Declare PtrSafe Function WSAGetLastError Lib "ws2_32.dll" () As Long
Private Declare Function VarPtrArray Lib "VBE7" Alias "VarPtr" (var() As Any) As Long
'Login Button Click Event
Function Login(ID As String, pw As String)
Dim m_wsaData As WSADATA
Dim m_RetVal As Integer
Dim m_Hints As ADDRINFO
Dim m_ConnSocket As Long: m_ConnSocket = INVALID_SOCKET
Dim pAddrInfo As LongPtr
Dim RetVal As Long
Dim lastError As Long
Dim iRC As Long
Dim MAX_BUF_SIZE As Integer: MAX_BUF_SIZE = 512
Login = 0
'Socket Settings
RetVal = WSAStartup(MAKEWORD(2, 2), m_wsaData)
If (RetVal <> 0) Then
LogError "WSAStartup failed with error " & RetVal, WSAGetLastError()
Call WSACleanup
Exit Function
End If
m_Hints.ai_family = AF.AF_UNSPEC
m_Hints.ai_socktype = sock_type.SOCK_STREAM
RetVal = GetAddrInfo(ip, port, VarPtr(m_Hints), pAddrInfo)
If (RetVal <> 0) Then
LogError "Cannot resolve address " & ip & " and port " & port & ", error " & RetVal, WSAGetLastError()
Call WSACleanup
Exit Function
End If
m_Hints.ai_next = pAddrInfo
Dim connected As Boolean: connected = False
Do While m_Hints.ai_next > 0
CopyMemory m_Hints, ByVal m_Hints.ai_next, LenB(m_Hints)
m_ConnSocket = ws_socket(m_Hints.ai_family, m_Hints.ai_socktype, m_Hints.ai_protocol)
If (m_ConnSocket = INVALID_SOCKET) Then
LogError "Error opening socket, error " & RetVal
Else
Dim connectionResult As Long
connectionResult = connect(m_ConnSocket, m_Hints.ai_addr, m_Hints.ai_addrlen)
If connectionResult <> SOCKET_ERROR Then
connected = True
Exit Do
End If
LogError "connect() to socket failed"
closesocket (m_ConnSocket)
End If
Loop
If Not connected Then
LogError "Fatal error: unable to connect to the server", WSAGetLastError()
RetVal = closesocket(m_ConnSocket)
Call WSACleanup
Exit Function
End If
'After Socket Connected
Dim SendBuf As String
SendBuf = ID + "|" + pw
'Send Login Data
RetVal = Send(m_ConnSocket, SendBuf, Len(SendBuf), 0)
If RetVal = SOCKET_ERROR Then
LogError "send() failed", WSAGetLastError()
RetVal = closesocket(m_ConnSocket)
Call WSACleanup
Exit Function
Else
Debug.Print "sent " & RetVal & " bytes"
End If
' shutdown the connection since no more data will be sent
RetVal = shutdown(m_ConnSocket, SD_SEND)
If RetVal <> 0 Then
LogError "send socket close failed", WSAGetLastError()
RetVal = closesocket(m_ConnSocket)
Call WSACleanup
Else
Debug.Print "send socket closed"
End If
'Recieve From Server (Login Success : 1, Fail : 0)
Dim RecvBuf As Byte
RetVal = Recv(m_ConnSocket, RecvBuf, MAX_BUF_SIZE, 0)
If RetVal = SOCKET_ERROR Then
LogError "recv() failed", WSAGetLastError()
RetVal = closesocket(m_ConnSocket)
Call WSACleanup
Exit Function
Else
Debug.Print "recieved " & RetVal & " bytes"
End If
'Login Check (s : success(id,pw correspond, f : fail)
If Left(Chr(RecvBuf), 1) = "s" Then
Login = 1
Else
Login = 0
End If
RetVal = closesocket(m_ConnSocket)
If RetVal <> 0 Then
LogError "closesocket() failed", WSAGetLastError()
Call WSACleanup
Else
Debug.Print "closed socket"
End If
End Function
Public Function MAKEWORD(Lo As Byte, Hi As Byte) As Integer
MAKEWORD = Lo + Hi * 256& Or 32768 * (Hi > 127)
End Function
Private Sub LogError(msg As String, Optional ErrorCode As Long = -1)
If ErrorCode > -1 Then
msg = msg & " (error code " & ErrorCode & ")"
End If
Debug.Print msg
End Sub
I think this code explained all you need.
but if you know more detailed process,
I also posted this to my blog
https://blog.naver.com/monkey5255/221386590654

Answer 2

Short Answer
wsock32.dll
Additional Information
I have found a few detailed examples in C and VB using this DLL.
Examples in C
Examples in VB
Thus far I have not had a chance to run any examples within VBA due to a shift in my projects scope. I am instead using Python to control Visio via a COM connection with great success.

Answer 3

You might want to take a look at Webxcel https://github.com/michaelneu/webxcel, a full REST-Backend written in Excel-Macros.