CONFIGURABLE NETWORK SOCKET RETRANSMISSION TIMEOUT PARAMETERS

• US 20120120848A1
• Filed: 11/11/2010
• Published: 05/17/2012
• Est. Priority Date: 11/11/2010
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Hegde, Nikhil, Mansur, Vishal R., Jacob, Sophia, Tah, Arnab
• Granted Patent: US 8,483,095 B2
• Time in Patent Office: Days
• US Class Current: 370/255
• CPC Class Codes: H04L 69/162 involving adaptations of sockets based mechanisms secure socket layer H04L63/168

Abstract

A network communication device can implement configurable network socket retransmission timeout parameters on a per socket basis. In one embodiment, it is determined, at a first network device, whether to define a network socket with a custom or a default retransmission timeout value to transmit data to a second network device. In response to determining to define the network socket with the custom retransmission timeout value, the network socket is defined with the custom retransmission timeout value, the data is transmitted to the second network device, and it is determined whether response data is received from the second network device prior to expiration of a time period associated with the custom retransmission timeout value. In response to determining that the response data is not received from the second network device prior to the expiration of the corresponding time period, the data is retransmitted to the second network device.

Claims

1. A method comprising:

determining, at a first network device, whether to define a network socket, associated with a network connection with a second network device, with a custom retransmission timeout value to transmit data to the second network device;

in response to determining to define the network socket with the custom retransmission timeout value,

defining the network socket with the custom retransmission timeout value;

transmitting the data to the second network device via the network connection associated with the network socket;

determining whether response data is received from the second network device prior to expiration of a time period associated with the custom retransmission timeout value; and

in response to determining that the response data is not received from the second network device prior to the expiration of the time period associated with the custom retransmission timeout value, retransmitting the data to the second network device.

2. The method of claim 1, further comprising:

in response to determining not to define the network socket with the custom retransmission timeout value,

defining the network socket with a default retransmission timeout value;

transmitting the data to the second network device via the network connection associated with the network socket;

determining whether response data is received from the second network device prior to expiration of a time period associated with the default retransmission timeout value; and

in response to determining that the response data is not received from the second network device prior to the expiration of the time period associated with the default retransmission timeout value, retransmitting the data to the second network device.

3. The method of claim 2, wherein, in response to said transmitting the data to the second network device, the method further comprises:

initiating a retransmission timer based on the default retransmission timeout value;

determining whether response data is received from the second network device prior to the expiration of the retransmission timer; and

in response to determining that the response data is not received from the second network device prior to the expiration of the retransmission timer, retransmitting the data to the second network device.

4. The method of claim 1, wherein, in response to said determining to define the network socket with the custom retransmission timeout value and said transmitting the data to the second network device, the method further comprises:

initiating a retransmission timer based on the custom retransmission timeout value;

determining whether response data is received from the second network device prior to the expiration of the retransmission timer; and

in response to determining that the response data is not received from the second network device prior to the expiration of the retransmission timer, retransmitting the data to the second network device.

5. The method of claim 1, wherein the time period associated with the custom retransmission timeout value is less than a time period associated with the default retransmission timeout value.

6. The method of claim 1, wherein, in response to said determining that the response data is not received from the second network device prior to the expiration of the time period associated with the custom retransmission timeout value, the method further comprises:

determining whether a retransmission cycle limit has been reached;

if the retransmission cycle limit has not been reached, retransmitting the data to the second network device; and

if the retransmission cycle limit has been reached, delaying or halting additional retransmissions of the data to the second network device.

7. The method of claim 1, further comprising:

determining, at a first network device, whether to define each of a plurality of network sockets, associated with a plurality of network connections with a plurality of additional network devices including the second network device, with one of a plurality of custom retransmission timeout values or the default retransmission timeout value to transmit data to the plurality of additional network devices;

defining a subset of the plurality of network sockets of the first network device with one of the plurality of custom retransmission timeout values; and

defining a remainder of the plurality of network sockets of the first network device with the default retransmission timeout value.

8. The method of claim 1, wherein said determining, at a first network device, whether to define the network socket, associated with the network connection with the second network device, with a custom retransmission timeout value to transmit data to the second network device comprises:

determining whether to define the network socket with the custom retransmission timeout value based, at least in part, on retransmission criteria configured by a user of the first network device or retransmission criteria configured by an application of the first network device associated with a pending data communication with the second network device.

9. The method of claim 1, wherein said determining, at a first network device, whether to define the network socket, associated with the network connection with the second network device, with a custom retransmission timeout value to transmit data to the second network device comprises:

determining whether to define the network socket with the custom retransmission timeout value based, at least in part, on characteristics of a pending data communication with the second network device.

10. A network communication device comprising:

a processor;

a network interface coupled with the processor;

a protocol control unit coupled with the processor and the network interface, the protocol control unit operable to,

determine whether to define a network socket, associated with a network connection with a second network communication device, with a custom retransmission timeout value to transmit data to the second network communication device;

in response to determining not to define the network socket with the custom retransmission timeout value, define the network socket with a default retransmission timeout value;

in response to determining to define the network socket with the custom retransmission timeout value, define the network socket with the custom retransmission timeout value; and

a socket transmission unit coupled with the processor and the network interface, the socket transmission unit operable to,

transmit the data to the second network communication device via the network connection associated with the network socket;

determine whether response data is received from the second network communication device prior to expiration of a time period associated with a defined retransmission timeout value associated with the network socket; and

in response to determining that the response data is not received from the second network communication device prior to the expiration of the time period associated the defined retransmission timeout value associated with the network socket, retransmit the data to the second network communication device.

11. The network communication device of claim 10, wherein, in response to the socket transmission unit transmitting the data to the second network communication device, the socket transmission unit is further operable to:

initiate a retransmission timer based on the time period associated with the defined retransmission timeout value;

determine whether response data is received from the second network communication device prior to the expiration of the retransmission timer; and

in response to determining that the response data is not received from the second network communication device prior to the expiration of the retransmission timer, retransmit the data to the second network communication device.

12. The network communication device of claim 11, wherein the defined retransmission timeout value associated with the network socket is the custom retransmission timeout value or the default retransmission timeout value.

13. The network communication device of claim 12, wherein a time period associated with the custom retransmission timeout value is less than a time period associated with the default retransmission timeout value.

14. The network communication device of claim 10, wherein, in response to the socket transmission unit determining that the response data is not received from the second network communication device prior to the expiration of the time period associated the defined retransmission timeout value associated with the network socket, the socket transmission unit is further operable to:

determine whether a retransmission cycle limit has been reached;

if the retransmission cycle limit has not been reached, retransmit the data to the second network communication device; and

if the retransmission cycle limit has been reached, delay or halt additional retransmissions of the data to the second network communication device.

15. The network communication device of claim 10, wherein the protocol control unit is further operable to:

determine whether to define each of a plurality of network sockets, associated with a plurality of network connections with a plurality of additional network communication devices including the second network communication device, with one of a plurality of custom retransmission timeout values or the default retransmission timeout value to transmit data to the plurality of additional network communication devices;

define a subset of the plurality of network sockets of the network communication device with one of the plurality of custom retransmission timeout values; and

define a remainder of the plurality of network sockets of the network communication device with the default retransmission timeout value.

16. The network communication device of claim 10, wherein the protocol control unit operable to determine whether to define the network socket, associated with the network connection with the second network communication device, with a custom retransmission timeout value to transmit data to the second network communication device comprises the protocol control unit operable to:

determine whether to define the network socket based, at least in part, on retransmission criteria configured by a user of the network communication device, or retransmission criteria configured by an application of the network communication device associated with a corresponding data communication.

17. A computer program product for implementing configurable network socket retransmission timeout values, the computer program product comprising:

a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to,

determine, at a first network device, whether to define a network socket, associated with a network connection with a second network device, with a custom retransmission timeout value to transmit data to the second network device;

in response to determining to define the network socket with the custom retransmission timeout value,

define the network socket with the custom retransmission timeout value;

transmit the data to the second network device via the network connection associated with the network socket;

determine whether response data is received from the second network device prior to expiration of a time period associated with the custom retransmission timeout value; and

in response to determining that the response data is not received from the second network device prior to the expiration of the time period associated with the custom retransmission timeout value, retransmit the data to the second network device.

18. The computer program product of claim 17, wherein the computer readable program code is further configured to:

in response to determining not to define the network socket with the custom retransmission timeout value,

define the network socket with a default retransmission timeout value;

transmit the data to the second network device via the network connection associated with the network socket;

determine whether response data is received from the second network device prior to expiration of a time period associated with the default retransmission timeout value; and

in response to determining that the response data is not received from the second network device prior to the expiration of the time period associated with the default retransmission timeout value, retransmit the data to the second network device.

19. The computer program product of claim 18, wherein the time period associated with the custom retransmission timeout value is less than the time period associated with the default retransmission timeout value.

20. The computer program product of claim 17, wherein, in response to said determining that the response data is not received from the second network device prior to the expiration of the time period associated with the custom retransmission timeout value, the computer readable program code is further configured to:

determine whether a retransmission cycle limit has been reached;

if the retransmission cycle limit has not been reached, retransmit the data to the second network device; and

if the retransmission cycle limit has been reached, delay or halt additional retransmissions of the data to the second network device.