diff options
| author | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2010-07-16 10:00:58 +0000 |
|---|---|---|
| committer | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2010-07-16 10:00:58 +0000 |
| commit | c7a055522da15bc29d0a78df1233983b5b372740 (patch) | |
| tree | 66a1b6bdd4c7e628f65780c4ed2a03d1734dfef7 /channels/sip | |
| parent | 884f6d5489131ce6ae1ee0ed6a909092cfaca49f (diff) | |
Add ability to configure the Max-Forwards header in the dialplan, as well as in
sip.conf configuration for the channel and for devices.
The Max-Forwards header is used to prevent loops in a SIP network. Each intermediary,
like SIP proxys and SBCs, decrement this counter and detects when it reaches zero,
at which point the SIP request is nicely killed in a SIP-friendly way.
Review: https://reviewboard.asterisk.org/r/778/
Thanks to dvossel for the review and good advice.
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@276951 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'channels/sip')
| -rw-r--r-- | channels/sip/include/sip.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/channels/sip/include/sip.h b/channels/sip/include/sip.h index 2644536cd..706a8e796 100644 --- a/channels/sip/include/sip.h +++ b/channels/sip/include/sip.h @@ -57,7 +57,7 @@ #define DEFAULT_MAX_EXPIRY 3600 #define DEFAULT_MWI_EXPIRY 3600 #define DEFAULT_REGISTRATION_TIMEOUT 20 -#define DEFAULT_MAX_FORWARDS "70" +#define DEFAULT_MAX_FORWARDS 70 /* guard limit must be larger than guard secs */ /* guard min must be < 1000, and should be >= 250 */ @@ -703,6 +703,7 @@ struct sip_settings { struct ast_ha *contact_ha; /*! \brief Global list of addresses dynamic peers are not allowed to use */ format_t capability; /*!< Supported codecs */ int tcp_enabled; + int default_max_forwards; /*!< Default max forwards (SIP Anti-loop) */ }; /*! \brief The SIP socket definition */ @@ -953,6 +954,7 @@ struct sip_pvt { AST_STRING_FIELD(dialstring); /*!< The dialstring used to call this SIP endpoint */ ); char via[128]; /*!< Via: header */ + int maxforwards; /*!< SIP Loop prevention */ struct sip_socket socket; /*!< The socket used for this dialog */ unsigned int ocseq; /*!< Current outgoing seqno */ unsigned int icseq; /*!< Current incoming seqno */ @@ -1194,6 +1196,7 @@ struct sip_peer { int call_limit; /*!< Limit of concurrent calls */ int t38_maxdatagram; /*!< T.38 FaxMaxDatagram override */ int busy_level; /*!< Level of active channels where we signal busy */ + int maxforwards; /*!< SIP Loop prevention */ enum transfermodes allowtransfer; /*! SIP Refer restriction scheme */ struct ast_codec_pref prefs; /*!< codec prefs */ int lastmsgssent; |