Hi All According to RFC 3261 section 18.1.1, SIP over UDP implementation should be able to send /receive 65535 bytes of packet size. Is this applicable for all SIP networks or is there any other limits on the size of SIP message. Basically, If SIP message with large content and content –length (say 8K or 32K ) is sent, is it guaranteed to reach the endpoint across the network?
Appreciate any suggestion or thoughts on this from SIP Gurus. Thanks Suresh 18.1.1 Sending Requests The client side of the transport layer is responsible for sending the request and receiving responses. The user of the transport layer passes the client transport the request, an IP address, port, transport, and possibly TTL for multicast destinations. I f a request is within 200 bytes of the path MTU, or if it is larger than 1300 bytes and the path MTU is unknown, the request MUST be sent using an RFC 2914 [43] congestion controlled transport protocol, such as TCP. If this causes a change in the transport protocol from the one indicated in the top Via, the value in the top Via MUST be changed. This prevents fragmentation of messages over UDP and provides congestion control for larger messages. However, implementations MUST be able to handle messages up to the maximum datagram packet size. For UDP, this size is 65,535 bytes, including IP and UDP headers. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
