Hello,
I'm trying to get my real-time astronomy software RTGUI to send commands to the
latest Skycharts Beta (skychart-3.0.1.6-1202-windows.exe) using the TCP/IP
interface. This involves using Winsock on Visual Basic 6 (not .NET) as the
TCP/IP interface. Unfortunately, Skycharts only gets as far as state 6
(Connecting), but never reaches state 7 (connected). If you try to send or
receive any data, you get the error message that you are not in a valid state
for that.
I can use Telnet from the console to connect with Skycharts, and send it
commands.
telnet localhost 3292
Skycharts accepts the commands when sent in that manner.
The relevant code looks something like this. Skycharts does start up, but does
not connect. The "loop" command at the bottom just loops forever, as the state
never changes from "connecting" to "connected".
CmdLine = CielDir & "\skychart.exe" 'name of new version
' Now start up Skycharts, Ver 3, if installed
rc = ShellExecute(0&, vbNullString, CmdLine, CmdLineParms,
vbNullString, 1)
if (rc = OK) then
Set myWinSock = Form1.Winsock1
If myWinSock.State <> sckClosed Then
myWinSock.Close
End If
Sleep (1000) 'give Skycharts some time.
myWinSock.Protocol = sckTCPProtocol
myWinSock.RemoteHost = "localhost"
myWinSock.RemotePort = 3292
myWinSock.Connect
Do
DoEvents
Loop While myWinSock.State = 6 '6 = "connecting"
end if
Notice that I do not set up any event handlers. Is it necessary to have them in
order to connect? I don't need to receive any data from Skycharts, just to send
it.
Robert Sheaffer
