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migration:kamailio-tips [2009/06/01 16:24]
87.95.34.239 |
migration:kamailio-tips [2009/12/10 18:47] (current)
192.98.100.132 |
| ===== TCP Connection Lifetime ===== | ===== TCP Connection Lifetime ===== |
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| * **registrar** module in Kamailio has support to set automatically the lifetime of the TCP connection for current processed SIP REGISTER message. | * **registrar** module in Kamailio 1.5 and earlier had support to set automatically the lifetime of the TCP connection for current processed SIP REGISTER message by defining **tcp_persistent_flag** module parameter and then by setting the flag before save() function was called. |
| * in **sip-router** similar functionality can be achieved by setting **tcp_connection_lifetime** config parameters just a bit higher than max registration expire. The lifetime for a TCP connection is automatically extended when a message is going through. In case of hard/soft phones, the connection is closed by client side when they shut down. | * In **sip-router** and Kamailio 3.0 **tcp_persistent_flag** parameter does not exist anymore. Similar functionality can be achieved by setting **tcp_connection_lifetime** core config parameter just a bit higher than max registration expire. The lifetime for a TCP connection is automatically extended when a message is going through. In case of hard/soft phones, the connection is closed by client side when they shut down. |
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| ===== Log levels ===== | ===== Log levels ===== |
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| http://sip-router.org/wiki/cookbooks/core-cookbook/devel#dns_cache_negative_ttl | http://sip-router.org/wiki/cookbooks/core-cookbook/devel#dns_cache_negative_ttl |
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| | * [b]disable_dns_failover[/b] is replaced by [b]use_dns_failover[/b] |
| | |
| | By default, [b]use_dns_failover[/b] is currently "off". Hopefully, the default can be changed to "on" in order to be compatible with Kamailio default. |
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| | ===== Core Functions ===== |
| | |
| | * [b]append_branch()[/b] - fully Kamailio append_branch() function is now implemented by [b]kex[/b] module and it is named [b]km_append_branch()[/b]. See: |
| | * http://sip-router.org/docbook/sip-router/branch/master/modules_k/kex/kex.html |
| | * note: there is still a core function still called [b]append_branch()[/b], but it is SIP Express Router (SER) compatible. |
| | * [b]km_append_branch()[/b] - as new feature, it accepts now the URI parameter to contain pseudo-variables |
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| ===== Script syntax ===== | ===== Script syntax ===== |
| * [b]tm onreply_avp_mode[/b] does not exist | * [b]tm onreply_avp_mode[/b] does not exist |
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| In SIP Router, AVPs that are set in request route are always visible in branch and failure routes. Not confirmed yet if they are visible in onreply_route - the behaviour controlled by this Kamailio parameter. | In SIP Router, AVPs that are set in request route are always visible in branch, failure, and onreply_route. In other words, SIP Router behaves like Kamailio when onreply_avp_mode is set to value 1. |
| | |
| | * [b]tm fr_timer, fr_inv_timer, and contacts_avp[/b] AVP value syntax |
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| | In SIP Router, AVP value of tm module parameters fr_timer, fr_inv_timer, and contacts_avp is currently written without $avp(), for example, "i:705". This is to be fixed. |
| | |
| | * [b]tm fr_timer, fr_inv_timer, wt_timer, delete_timer, and unix_tx_timeout[/b] units |
| | |
| | In SIP Router, time value of the above parameters is given in milliseconds, whereas in Kamailio they are given in seconds (see [[ref_manual:timers|tm timers]] for more details). In order to make migration easier, perhaps a new tm module parameter could be introduced to specify, in which units time values are given. |
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| ===== Module functions ===== | ===== Module functions ===== |
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| * [b]tm t_relay()[/b] does not accept flag parameter | * [b]t_relay()[/b] does not accept flags parameter |
| | |
| | Module parameter "auto_inv_100" can be used to globally turn off gneration of provisional replies (default is 1 == "on"). It is also possible to dynamically control generation of provisional replies using function t_set_auto_inv_100(). |
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| | t_relay() does not send a negative reply implicitly. Negative reply is auto-generated at the end of the script if no reply was explicitly sent from the script. |
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| | Core parameter "use_dns_failover" can be used to globally turn off DNS failover (default is "off"). |
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| Flag value 0x01 (do not generate an 100 trying provisional reply) has no equivalent in SIP Router. tm module parameter "auto_inv_100" can be used to globally turn off gneration of provisional replies (default is 1 == "on"). | * [b]t_relay()[/b] does not generate internally a negative reply. Negative reply is can always be generated explicitly from script. If not done, it is generated implicitly at the end of the script. |
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| Flag value 0x04 (disable the DNS failover) has no equivalent in SIP Router. Core parameter "use_dns_failover" can be used to globally turn off DNS failover (default is "off"). | * [b]t_was_cancelled()[/b] is replaced by [b]t_is_canceled()[/b]. |
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| ===== Route blocks ===== | ===== Route blocks ===== |
