Network type detection - maemo.org

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rbailly	2010-02-26 , 16:06
Posts: 3 \| Thanked: 6 times \| Joined on Feb 2010 @ Paris	#1

Hi,

I need to detect the network type I'm connected through on a N900, in order to adapt the size of what I'm downloading to the connection speed.

I can already find out whether I'm connected through WiFi or cellular data, but in the latter case I would need to know what's the "generation" of that cellular connection (2.5G, 3G or 3.5G ?) in order to estimate the throughput I can expect.

There's got to be a way to get that information since the status area displays it, but so far I haven't been able to find it.

Any hint is welcome,
Thanks in advance

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	noobmonkey	2010-02-26 , 16:14
	Posts: 3,203 \| Thanked: 1,391 times \| Joined on Nov 2009 @ Worthing, England	#2

yup check my healthcheck application

Uses Python / pymaemo - and pulls out Cell info connection type

A good example of the code can be found here though - http://repository.maemo.org/extras-d...urce/n/netmon/

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rbailly	2010-03-01 , 14:49
Posts: 3 \| Thanked: 6 times \| Joined on Feb 2010 @ Paris	#3

Thanks, that was indeed really helpful. Here's the code I came up with, in case someone else is interested:

Code:

GError* error = NULL;
DBusGConnection* dbus = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
DBusGProxy* phoneNetProxy = dbus_g_proxy_new_for_name(dbus, "com.nokia.phone.net", "/com/nokia/phone/net", "Phone.Net");

guchar status;
guint  lac;
guint  cellId;
guint  operatorCode;
guint  countryCode;
guchar networkType;
guchar supportedServices;
gint   netError;
dbus_g_proxy_call(phoneNetProxy, "get_registration_status", &error,
                  G_TYPE_INVALID,
                  G_TYPE_UCHAR, &status,
                  G_TYPE_UINT,  &lac,
                  G_TYPE_UINT,  &cellId,
                  G_TYPE_UINT,  &operatorCode,
                  G_TYPE_UINT,  &countryCode,
                  G_TYPE_UCHAR, &networkType,
                  G_TYPE_UCHAR, &supportedServices,
                  G_TYPE_INT,   &netError,
                  G_TYPE_INVALID);

g_object_unref(phoneNetProxy);

if (supportedServices & 0x08) return "3.5G"; // HSDPA
if (supportedServices & 0x04) return "3G";   // EGPRS
if (supportedServices & 0x01) return "2.5G"; // GPRS
if (supportedServices & 0x02) return "2G";   // CS (Circuit Switched)
return NULL;

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noobmonkey

	noobmonkey	2010-03-01 , 16:24
	Posts: 3,203 \| Thanked: 1,391 times \| Joined on Nov 2009 @ Worthing, England	#4

Originally Posted by rbailly

Thanks, that was indeed really helpful. Here's the code I came up with, in case someone else is interested:

Code:

GError* error = NULL;
DBusGConnection* dbus = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
DBusGProxy* phoneNetProxy = dbus_g_proxy_new_for_name(dbus, "com.nokia.phone.net", "/com/nokia/phone/net", "Phone.Net");

guchar status;
guint  lac;
guint  cellId;
guint  operatorCode;
guint  countryCode;
guchar networkType;
guchar supportedServices;
gint   netError;
dbus_g_proxy_call(phoneNetProxy, "get_registration_status", &error,
                  G_TYPE_INVALID,
                  G_TYPE_UCHAR, &status,
                  G_TYPE_UINT,  &lac,
                  G_TYPE_UINT,  &cellId,
                  G_TYPE_UINT,  &operatorCode,
                  G_TYPE_UINT,  &countryCode,
                  G_TYPE_UCHAR, &networkType,
                  G_TYPE_UCHAR, &supportedServices,
                  G_TYPE_INT,   &netError,
                  G_TYPE_INVALID);

g_object_unref(phoneNetProxy);

if (supportedServices & 0x08) return "3.5G"; // HSDPA
if (supportedServices & 0x04) return "3G";   // EGPRS
if (supportedServices & 0x01) return "2.5G"; // GPRS
if (supportedServices & 0x02) return "2G";   // CS (Circuit Switched)
return NULL;

Nicely done

- and thank you for reposting back - allways good to get extra info. - if it is not already on the wiki - may be worth you posting an example page on there?

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tmsha	2010-03-01 , 18:51
Posts: 60 \| Thanked: 23 times \| Joined on Jan 2010	#5

Thanks for posting that!

Can you please post code for how to detect if the current connection is wifi or cellular ?

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rbailly	2010-03-02 , 09:30
Posts: 3 \| Thanked: 6 times \| Joined on Feb 2010 @ Paris	#6

Originally Posted by tmsha

Thanks for posting that!

Can you please post code for how to detect if the current connection is wifi or cellular ?

Ok, here we go. Please note that this is code I wrote on the fly by copying and pasting parts of my own code. It compiles fine but I haven't tested it.

You can also figure out whether you're connected through bluetooth by testing for additional bearer strings as documented in libconic.

Code:

#include <conic/conicconnection.h>
#include <conic/conicconnectionevent.h>
#include <conic/conicevent.h>
#include <glib/gmain.h>
#include <string.h>
	

enum ConnectionType
{
    CONN_TYPE_UNKNOWN,
    CONN_TYPE_WIFI,
    CONN_TYPE_CELLULAR,
};


struct ConnectionEventData
{
    GMainLoop*     loop;
    ConnectionType type;
};


void ConnectionEventCallback(ConIcConnection* /*connection*/, ConIcConnectionEvent* event, gpointer user_data)
{
    ConnectionEventData* data = static_cast<ConnectionEventData*>(user_data);

    bool connected = (con_ic_connection_event_get_status(event) == CON_IC_STATUS_CONNECTED);
    if (connected)
    {
        const gchar* bearer = con_ic_event_get_bearer_type(CON_IC_EVENT(event));
        if (strcmp(bearer,CON_IC_BEARER_WLAN_ADHOC)==0 || strcmp(bearer,CON_IC_BEARER_WLAN_INFRA)==0)
            data->type =  CONN_TYPE_WIFI;
        else if (strcmp(bearer,"GPRS") == 0)
            data->type = CONN_TYPE_CELLULAR;
    }

    g_main_loop_quit(data->loop);
}


ConnectionType GetConnectionType()
{
    ConnectionEventData data;
    data.loop = g_main_loop_new(NULL, FALSE);
    data.type = CONN_TYPE_UNKNOWN;

    // Create connection
    ConIcConnection* connection = con_ic_connection_new();
    g_object_ref_sink(connection);
    g_signal_connect(G_OBJECT(connection), "connection-event", G_CALLBACK(ConnectionEventCallback), &data);

    // Ask whether we're already connected
    con_ic_connection_connect(connection, CON_IC_CONNECT_FLAG_AUTOMATICALLY_TRIGGERED);

    // Run our own event loop to wait for notification
    g_main_loop_run(data.loop);
    g_main_loop_unref(data.loop);

    g_object_unref(connection);
    return data.type;
}

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