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| author | Zhang zhengguang <zhengguang.zhang@intel.com> | 2014-10-29 11:03:47 +0800 |
|---|---|---|
| committer | Zhang zhengguang <zhengguang.zhang@intel.com> | 2014-10-29 11:03:47 +0800 |
| commit | bcae74da8fa2958b3fec9153fc33e41f0e0317bf (patch) | |
| tree | 06a00f6457307467fee4f6580dce4a1a857751c1 /README | |
| parent | 1b9d0a62f59bb48c8deb2f0b98d9acdffdd9abe7 (diff) | |
| download | connman-bcae74da8fa2958b3fec9153fc33e41f0e0317bf.tar.gz connman-bcae74da8fa2958b3fec9153fc33e41f0e0317bf.tar.bz2 connman-bcae74da8fa2958b3fec9153fc33e41f0e0317bf.zip | |
Imported Upstream version 1.26upstream/1.26
Diffstat (limited to 'README')
| -rw-r--r-- | README | 42 |
1 files changed, 41 insertions, 1 deletions
@@ -44,7 +44,7 @@ In order to compile Connection Manager you need following software packages: - GCC compiler - GLib library - D-Bus library - - IP-Tables library + - IP-Tables library (for tethering support) - GnuTLS library (optional) - PolicyKit (optional) - readline (command line client) @@ -353,6 +353,46 @@ network. While the same setup works well for a WiFi or ethernet uplink. +Online check +============ + +ConnMan tries to detect if it has Internet connection or not when +a service is connected. If the online check succeeds the service +enters Online state, if not it stays in Ready state. The online +check is also used to detect whether ConnMan is behind a captive +portal like when you are in hotel and need to pay for connectivity. + +The online check is done by trying to fetch status.html document +from ipv4.connman.net (for IPv4 connectivity) and ipv6.connman.net +(for IPv6 connectivity). The used URL looks like this +http://ipv{4|6}.connman.net/online/status.html + +During the online check procedure, ConnMan will temporarily install +a host route to both the ipv4.connman.net and ipv6.connman.net so that +the online check query can be directed via the correct network +interface which the connected service is using. This host route is +automatically removed when the online check is done. + +ConnMan sends this very minimal information in http header when doing +the online check request (example): + Host: ipv4.connman.net + User-Agent: ConnMan/1.23 wispr + Connection: close + +Currently following information is returned from connman.net if +the connection is successfull (200 OK http response code is returned): + Server: nginx + Date: Mon, 09 Jun 2014 09:25:42 GMT + Content-Type: text/html + Connection: close + X-ConnMan-Status: online + +The X-ConnMan-Status field is used in portal detection, if it is missing +ConnMan will call RequestBrowser method in net.connman.Agent dbus +interface to handle the portal login if the portal does not support WISPr. +See doc/agent-api.txt for more details. + + Information =========== |