Multi address selection method based on flow control transmission protocol
A flow control transmission, multi-address technology, applied in the field of network communication, can solve the problem that addresses cannot be selected, users cannot be preferentially selected, and no address pair is provided to ensure that each address is selected to a technical solution, etc. To achieve the effect of meeting the transmission needs
Inactive Publication Date: 2009-06-24
HUAWEI TECH CO LTD
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Problems solved by technology
In this way, when selecting an address pair, if there is no reasonable plan to replace the address pair, some addresses may not be selected all the time; moreover, for the primary local address and peer address specified by the user, when the When the pair returns to normal after a failure, because other non-active address pairs have been selected for transmission at this time, once the active address fails, even if it returns to normal, the active address pair can no longer be used for transmission
The existing SCTP protocol standard does not provide a technical solution to ensure that each address is selected when selecting an address pair, and it is impossible to preferentially select the primary address pair specified by the user.
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[0031] The specific implementation of the multi-address selection method based on the flow control transmission protocol described in the present invention is as follows: figure 1 shown, including the following steps:
[0032] Step 1: Determine that a new address needs to be selected for data transmission; if the data needs to be resent, it is necessary to reselect the address;
[0033] Step 2: For the data that needs to select a new address to send, select a new peer address on the SCTP endpoint in turn; that is, the peer address selected for each retransmission is changed, and the replacement peer address is the one that selects the SCTP endpoint in turn Each peer address;
[0034] Step 3: Determine whether all the peer addresses of the SCTP endpoint have been selected, if yes, go to step 4, otherwise, for the data that needs to select a new address to send, continue to step 2, and continue to select a new peer address, until all peer addresses are selected, then perform s...
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The invention relates to a multi-address selection method based on flow control transmission protocol. This method realizes that when retransmitting data for SCTP (Stream Control Transmission Protocol) endpoints with multiple addresses, all peers and local addresses are selected in turn; in this way, if the preferred path used fails, other available path, and in the address selection process, it can be guaranteed that each address of the SCTP endpoint can be selected; at the same time, the present invention recovers after the primary local address or peer address has failed, and the SCTP connection can still be Use the primary address for data transmission to meet the user's transmission needs.
Description
technical field [0001] The invention relates to the technical field of network communication, in particular to a multi-address selection method based on a flow control transmission protocol. Background technique [0002] SCTP (Stream Control Transmission Protocol, Stream Control Transmission Protocol) is a stream control transmission protocol for IP (Internet Protocol) networks. It is a protocol for transmitting signaling messages on the IP network, which can ensure reliable and orderly transmission of signaling messages. [0003] The underlying IP used by SCTP is a standard IP protocol within the TCP / IP protocol family. Compared with TCP, SCTP has the characteristics of real-time, security and higher reliability for signaling transmission. At the same time, SCTP can provide connection-oriented reliable data packets. Transmission, no need for upper layer to implement data demarcation function, and has good real-time performance, high security, and avoids head-of-line blocki...
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IPC IPC(8): H04L29/06H04Q3/00
Inventor 林铭
Owner HUAWEI TECH CO LTD