How To Create a GPRS Connection ?

[Leandro Severino]

Hi,
  I have a app where I need send a file by FTP. My SmartPhone is a Palm Treo Pro with Windows Mobile 6.1 Professional.
  I have a problem: How to detect and create a 3G/GPRS connection ?

  When I try execute this code, it don't connect/create/estabilished a connection with the FTP Server:
  ftp = ftplib.FTP("ftp.myserver.com.br")

  ftp.login("userName", "password")

  ftp.set_pasv(0)

  ftp.set_debuglevel(2)

  ftp.sendcmd("CWD /public_ftp/incoming")

  upload(ftp, myFile)

   To solve this I have that open the "Internet Explorer" before execute my app and this is bad.
 
    How to solve this problem ?

    Thanks Leandro.

[Manfred Schulte-Oversohl]

Here is the Code that works for me:

# 20100705154437 
# Manfred Schulte-Oversohl :: Pragmatis GmbH
# Windows Mobile GPRS Connection
from ctypes import *
import time
import sys
from socket import *
# Let's map the Microsoft types to ctypes for clarity
BYTE      = c_ubyte
WORD      = c_ushort
DWORD     = c_ulong
class GUID(Structure):
    _fields_ = [("Data1", DWORD),
                ("Data2", WORD),
                ("Data3", WORD),
                ("Data4", BYTE * 8)]
                
    def __init__(self, name=None):
        if name is not None:
            oledll.ole32.CLSIDFromString(unicode(name), byref(self))
    def __str__(self):
        s = (c_wchar * 39)()
        oledll.ole32.StringFromGUID2(byref(self), s, 39)
        return s.value
class ConnectionInfo(Structure):
    _fields_ = [
    ("cbSize", c_uint),
    ("dwParams", c_uint),
    ("dwFlags", c_uint),
    ("dwPriority", c_uint),
    ("bExclusive", c_int),
    ("bDisabled", c_int),
    ("guidDestNet", GUID),
    ("hWnd", c_void_p),
    ("uMsg", c_uint),
    ("lParam", c_uint),
    ("ulMaxCost", c_uint),
    ("ulMinRcvBw", c_uint),
    ("ulMaxConnLatency", c_uint),
    ]
    
S_OK = 0
CONNMGR_PARAM_GUIDDESTNET = 0x1
CONNMGR_FLAG_PROXY_HTTP = 0x1
CONNMGR_PRIORITY_USERINTERACTIVE = 0x08000
INFINITE = 0xffffffff
CONNMGR_STATUS_CONNECTED = 0x10
ht = {}
cellcore = cdll.cellcore
def Setup(urlStr):
    ci = ConnectionInfo()
    phConnection = c_void_p()
    status = c_int()
    if urlStr in ht:
        return True
    dest = GUID()
    ret = cellcore.ConnMgrMapURL(unicode(urlStr), byref(dest), 0)
    writeLog_File("GUID of dest: %s" % str(dest))
    if  ret != S_OK:
        return False
    ci.cbSize = sizeof(ci);
    ci.dwParams = CONNMGR_PARAM_GUIDDESTNET
    ci.dwFlags = CONNMGR_FLAG_PROXY_HTTP
    ci.dwPriority = CONNMGR_PRIORITY_USERINTERACTIVE
    ci.guidDestNet = dest
    ci.bExclusive = 0
    ci.bDisabled = 0
    ci.hWnd = None
    ci.uMsg = 0
    ci.lParam = 0
    
    if cellcore.ConnMgrEstablishConnectionSync(byref (ci), byref( phConnection), INFINITE, byref( status)) != S_OK and status != CONNMGR_STATUS_CONNECTED:
        return False
    writeLog_File("L087 ConnMgrEstablishConnectionSync True")
    ht[urlStr] = phConnection
    writeLog_File("len (ht) %s" % str(len (ht)))
    return True
def DoTcpConnection():
    '''
    With VPN setting firstly the Internet Connection via ISP will be established
    and then the VPN connection will be initialized
    '''
    url = "asus"    # dummy, name triggers VPN with settings for Work
    ##url = "www.company.com" # for Internet via ISP
    ##res = Setup("http://www.name.com/") # Internet Pattern
    ##res = Setup("http://name/") # Work Pattern (without Dots)
    
    res = Setup("http://%s" % url)
    if res:
        writeLog_File("connected to %s" % url)
        # Begin Socket
        s = socket(AF_INET, SOCK_STREAM)
        s.connect(('192.168.0.48', 8000)) # IP / Port of Destination PC in Work via VPN
        s.settimeout(5)
        s.send('Hello world via VNP')
        data = s.recv(1024)
        s.close()
        # End Socket
        writeLog_File('Received: >%s<' % str(data))
    else:
        writeLog_File("Connection establishment failed")
    
def writeLog_File(log_txt = '', log_file = '', debug=0):
    if not log_file:
        if sys.argv[0].endswith(".py"): 
            log_file = sys.argv[0].replace('.py','.log')
        else:
            log_file = "%s.log" % sys.argv[0]
    if log_file != '':
        fhnd = open(log_file, 'a')
        fhnd.write("%s\t" % str(time.strftime( '%Y%m%dT%H%M%S.', time.localtime()) + str(time.time()).split('.')[1]))
        if log_txt != '':
            fhnd.write("%s\n" % (log_txt))
        if log_txt == '':
            fhnd.write("\n")
        fhnd.close()
if __name__ == "__main__":
    DoTcpConnection()

Enjoy
Manfred

[Leandro Severino]

Manfred,

   I'll test your code !.
  
   Thank you so much for your replay.

-Leandro