CN103516920A - Packet capture method and device - Google Patents
Packet capture method and device Download PDFInfo
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- CN103516920A CN103516920A CN201210204697.5A CN201210204697A CN103516920A CN 103516920 A CN103516920 A CN 103516920A CN 201210204697 A CN201210204697 A CN 201210204697A CN 103516920 A CN103516920 A CN 103516920A
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Abstract
The invention discloses a packet capture method and a packet capture device. The packet capture method comprises the following steps that: a voice over Internet protocol (VOIP) gateway device detects media streams which accord with preset packet capture conditions; and the voice over Internet protocol (VOIP) gateway device performs packet capture on detected media streams. By means of the packet capture method and the packet capture device of the invention, a problem of incapability of performing corresponding packet capture which is caused by incapability to acquire specific voice over Internet protocol (VOIP) resource information through relay information when calling does not occupy the relay information can be solved, and therefore, the packet capture can be accurately performed on the media streams when the calling does not occupy the relay information, and system performance can be improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of packet snapping method and device.
Background technology
The networking telephone (Voice Over Internet Protocol, referred to as VOIP) is applied in and has obtained in recent years developing rapidly, because of its have cheap, easily realize flexibly the advantages such as value-added service, become the developing direction of telecommunications industry.VOIP business not only can replace whole traditional public switched telephone network (Public Switched Telephone Network, referred to as PSTN) the network service that can provide, and the service that can provide many circuit switching to provide, there is brand-new service concept.The development of VOIP technology is revolutionary to telecommunications industry, and traditional PSTN network is substituted by the next generation network based on Internet protocol (Internet Protocol, referred to as IP) (Next Generation Network, referred to as NGN) just gradually.In order to complete PSTN equipment access IP network, in NGN network, introduced VOIP gateway device, VOIP gateway device mainly completes the mutual conversion between traditional repeat circuit exchange and IP packet switching.
VOIP gateway device is mainly by various voice compression algorithm centering relay trackside pulse code modulation (Pulse-Code Modulation, referred to as PCM) voice signal compresses and is packaged into IP and wrap in transmission over networks, VoP on IP packet network is decompressed and is reduced into the PCM voice signal of circuit side simultaneously, the process of whole calling is controlled by soft switch (also referred to as Media Gateway Controller).In a normal VOIP calls out, need to take relay circuit resources, VOIP resource.
On VOIP gateway, there are a large amount of relay circuit resources, each relay circuit resources is to identify by unique protocol end number in soft switch, in an audio call process, it is out that soft switch selects to take corresponding relay circuit resources automatically according to called number, but be oneself selected and taken by VOIP gateway for taking of VOIP resource.VOIP gateway device is different according to intensity of traffic, when the VOIP Media Stream quantity of simultaneously setting up is larger, from tens to several ten thousand all likely, finds the VOIP resource needing very difficult from so many callings.
VOIP gateway device, when normal commercialization, because fault analysis and handling, research etc. need, often need to the speech channel for designated user carry out voice medium packet capturing on VOIP gateway.For the VOIP through relaying, calling out the general method adopting is:
In soft switch, for caller or called number appointment, take relay resource; The VOIP resource of unique appointment is set for the relay resource of appointment on VOIP gateway; For the VOIP resource Media Stream after this appointment, carry out packet capturing.
Above method can effectively solve the packet capturing demand of part VOIP call business, but for not needing the calling the method that takies relay resource just cannot solve.Because cannot learn concrete VOIP resource information by concrete trunk information, also cannot carry out in time corresponding packet capturing.During packet capturing in this case just needs manually to screen from a large amount of signaling tracing, this calls out corresponding signaling, according to corresponding signaling, inquire the VOIP resource taking again, the method efficiency is extremely low, for ofer short duration calling as facsimile call often end of calling also do not find corresponding VOIP resource later.
Summary of the invention
The invention provides a kind of packet snapping method and device, at least to solve in correlation technique, call out while not taking relay resource, cannot learn concrete VOIP resource information by trunk information, cause carrying out the problem of corresponding packet capturing.
According to an aspect of the present invention, provide a kind of packet snapping method, having comprised: networking telephone VOIP gateway device has detected the Media Stream that meets preset packet capturing condition; Described VOIP gateway device carries out packet capturing to the described Media Stream detecting.
Preferably, VOIP gateway device detects the Media Stream meet preset packet capturing condition and comprises: described VOIP gateway device detects the Media Stream that meets described preset packet capturing condition in all VOIP resources in current system.
Preferably, VOIP gateway device detects the Media Stream meet preset packet capturing condition and comprises: whether the newly-built Media Stream of described VOIP gateway device Real-Time Monitoring meets described preset packet capturing condition.
Preferably, when described preset packet capturing condition is more under news, VOIP gateway device carries out packet capturing according to preset packet capturing condition and detects and comprise: whether the Media Stream that judgement has started packet capturing meets the preset packet capturing condition after renewal; If do not meet the preset packet capturing condition after described renewal, stop the packet capturing of described Media Stream.
Preferably, when described preset packet capturing condition is more under news, VOIP gateway device detects the Media Stream that meets preset packet capturing condition and comprises: whether the newly-built Media Stream of described VOIP gateway device Real-Time Monitoring meets the described preset packet capturing condition after renewal.
Preferably, described VOIP gateway device also comprises after the described Media Stream detecting is carried out to packet capturing: described VOIP gateway device is deleted described preset packet capturing condition; Described VOIP gateway device stops the packet capturing to all Media Streams.
Preferably, described preset packet capturing condition comprise following one of at least: the IP address of far-end, the IP address of near-end, distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length.
According to a further aspect in the invention, provide a kind of packet capturing device, be applied to networking telephone VOIP gateway device, having comprised: detection module, for detection of the Media Stream that meets preset packet capturing condition; Packet capturing module, for carrying out packet capturing to the described Media Stream detecting.
Preferably, described detection module comprises: detecting unit, and for surveying the Media Stream that meets described preset packet capturing condition in all VOIP resources of current system.
Preferably, described detection module also comprises: whether monitoring means, meet described preset packet capturing condition for the newly-built Media Stream of Real-Time Monitoring.
The present invention has adopted following method: VOIP gateway device carries out the selection of Media Stream according to preset packet capturing condition, to meeting the Media Stream of preset packet capturing condition, carry out packet capturing, cannot obtain VOIP resource by trunk information, and then cannot carry out in the situation of packet capturing Media Stream, utilize preset packet capturing condition of the present invention to select to carry out to it Media Stream of packet capturing, solved in correlation technique, call out while not taking relay resource, cannot learn concrete VOIP resource information by trunk information, cause carrying out the problem of corresponding packet capturing, and then when not taking relay resource, calling also can to Media Stream, carry out packet capturing accurately, promoted systematic function.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of the packet snapping method of the embodiment of the present invention;
Fig. 2 is according to the flow chart of the packet snapping method of the preferred embodiment of the present invention one;
Fig. 3 is according to the structured flowchart one of the packet capturing device of the embodiment of the present invention;
Fig. 4 is according to the structured flowchart two of the packet capturing device of the embodiment of the present invention;
Fig. 5 is according to the structural representation of the packet capturing device of the preferred embodiment of the present invention two.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
In correlation technique, call out while not taking relay resource, cannot learn concrete VOIP resource information by trunk information, cause carrying out the problem of corresponding packet capturing, the invention provides a kind of packet snapping method, the flow process of the method as shown in Figure 1, comprises that step S102 is to step S104:
Step S102, VOIP gateway device detects the Media Stream that meets preset packet capturing condition;
Step S104, VOIP gateway device carries out packet capturing to the Media Stream detecting.
The embodiment of the present invention has adopted following method: VOIP gateway device carries out the selection of Media Stream according to preset packet capturing condition, to meeting the Media Stream of preset packet capturing condition, carry out packet capturing, cannot obtain VOIP resource by trunk information, and then cannot carry out in the situation of packet capturing Media Stream, utilize the preset packet capturing condition of the present embodiment to select to carry out to it Media Stream of packet capturing, solved in correlation technique, call out while not taking relay resource, cannot learn concrete VOIP resource information by trunk information, cause carrying out the problem of corresponding packet capturing, and then when not taking relay resource, calling also can to Media Stream, carry out packet capturing accurately, promoted systematic function.
In implementation process, because VOIP media gateway is in the meeting of IP network side and diverse network end-on, as passive optical-fiber network (Passive Optical Network, referred to as PON) equipment, integrated access equipment (Integrated Access Device, referred to as IAD), IAD (Access Gateway, referred to as AG) equipment etc., within IP network the preceding paragraph time, all there is more fixing IP address in various device.When voice communication, the Media Stream port numbers in same User IP network be relatively fix or regular variation within the specific limits.Based on this, the embodiment of the present invention is considered and can be determined the information that those are changing always by the above-mentioned relatively-stationary information of terminal.
In implementation process, VOIP gateway device detects while meeting the Media Stream of preset packet capturing condition, can be in all VOIP resources that detect in current system, to meet the Media Stream of preset packet capturing condition.If find to exist the Media Stream that meets preset packet capturing condition to set up, can carry out packet capturing to it immediately.If meet the Media Stream of preset packet capturing condition in all VOIP resources in discovery current system, do not exist, whether the newly-built Media Stream of Real-Time Monitoring meets preset packet capturing condition.Media Stream for different situations carries out different detections, has embodied the flexibility of system.
If newly-built Media Stream meets preset packet capturing condition, it is carried out to packet capturing, if the current newly-built preset packet capturing condition that do not meet is monitored next Media Stream.
In implementation process, if work as preset packet capturing condition, be updated, at VOIP gateway device, according to preset packet capturing condition, carry out in the process of packet capturing detection, whether the Media Stream that needs judgement to start packet capturing meets the preset packet capturing condition after renewal; If do not meet the preset packet capturing condition after renewal, stop the packet capturing of Media Stream.If meet the preset packet capturing condition after renewal, continue to keep the operation to its packet capturing.
In the process of implementing in above-mentioned steps, can also whether meet the preset packet capturing condition after renewal by the newly-built Media Stream of Real-Time Monitoring.If newly-built Media Stream meets the preset packet capturing condition after renewal, can to it, carry out packet capturing immediately, if do not meet the preset packet capturing condition after renewal, continue monitoring.
In implementation process, preset packet capturing condition can comprise multiple, for example, the IP address of far-end, the IP address of near-end, distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length etc., can different preset packet capturing conditions need to be set according to difference, the in the situation that of needs, can be wherein one or more.
If current media stream packet capturing quantity has reached demand, not when media stream data bag is obtained in needs packet capturing, can delete preset packet capturing condition; Now, packet capturing condition has not had, and just cannot select qualified Media Stream to carry out packet capturing yet again, has stopped the packet capturing to all Media Streams, and stopped process is simple to operation, has promoted the performance of system.
Preferred embodiment one
This preferred embodiment provides a kind of method that VOIP gateway device carries out media packet capturing under NGN network, the method is filter condition by preset certain medium stream information, in large capacity VOIP gateway, searches out qualified VOIP Media Stream and automatically carries out packet capturing.By the method, can effectively grab the Media Stream of specific call, effectively solve the media packet capturing demand in the practical application of VOIP gateway.The method flow of this preferred embodiment as shown in Figure 2, comprises that step S202 is to step S210.
Step S202, arranges a preset packet capturing condition.After setting completed, this packet capturing condition can be issued.
Step S204 according to prerequisite, finds the Media Stream that meets prerequisite in all VOIP resources of system.
Step S206, judges whether qualified Media Stream is set up.If so, perform step S210, otherwise execution step S208.
Step S208, judges whether this Media Stream meets preset packet capturing condition when all newly-built Media Streams afterwards.If so, perform step S210, otherwise continue to carry out this step.
Step S210, opens the packet capturing to this Media Stream automatically.
In the process that above-mentioned steps is implemented, no matter current whether had a Media Stream that meets preset packet capturing condition, all can carry out Real-Time Monitoring contrast to newly-established Media Stream below, as long as meet preset packet capturing condition, all carries out packet capturing.
If after preset packet capturing condition changes, first newly-built Media Stream is carried out to Real-Time Monitoring contrast according to new prerequisite, to starting the Media Stream of packet capturing, judge whether to meet new preset packet capturing condition, do not meet the packet capturing that stops this Media Stream.
When no longer needing to capture media stream data bag, can cancel packet capturing prerequisite, stop ongoing Media Stream and capture, also no longer newly-built Media Stream is monitored or packet capturing later.
Below in conjunction with example, whole scheme is conducted further description.
(1) configure certain preset packet capturing condition, for example, the configuration IP address of far-end is, the IP address of near-end, the parameters such as distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length, above parameter can combination in any or requirement is set separately, also can be set to exclusion condition.For example, configuring preset packet capturing condition is that far-end IP scope is that 192.xxx.xxx.xxx distal end slogan scope is that 4000-5000(IP address or port numbers herein can, according to actual conditions arbitrary disposition, need only as effective value or effective range).
(2), according to prerequisite, in current all Media Streams of having set up, whether search has the Media Stream that meets prerequisite.If the area requirement, the remote port that have found far-end IP address to meet 192.xxx.xxx.xxx are the Media Stream in 4000-5000, for this Media Stream, carry out packet capturing.Meanwhile, the Media Stream that Real-Time Monitoring is newly-built, also notifies packet capturing module to carry out packet capturing for this Media Stream if meet prerequisite.
(3) if found, according to current preset packet capturing condition, catch the requirement that the bag coming does not meet us, or Media Stream is when too many, can further increase prerequisite, the area requirement that near-end IP is 10.xxx.xxx.xxx as increased in the condition of step 1, after preset packet capturing condition changes, according to new preset packet capturing condition, newly-built Media Stream is carried out to Real-Time Monitoring contrast, to starting the Media Stream of packet capturing, judge whether to meet new preset packet capturing condition, do not meet the packet capturing that stops this Media Stream.
(4) after packet capturing finishes, cancel prerequisite, stop the Real-Time Monitoring contrast to newly-built Media Stream, and stop ongoing Media Stream packet capturing.
The embodiment of the present invention also provides a kind of packet capturing device, and this device can be applied to VOIP gateway device, and its structured flowchart can as shown in Figure 3, comprise: detection module 10, for detection of the Media Stream that meets preset packet capturing condition; Packet capturing module 20, with detection module 10 couplings, for the Media Stream detecting is carried out to packet capturing.
In a preferred embodiment, the structured flowchart of above-mentioned packet capturing device can also be as shown in Figure 4, and wherein, detection module 10 comprises: detecting unit 102, for surveying the Media Stream that meets preset packet capturing condition in all VOIP resources of current system; Whether monitoring means 104, with detecting unit 102 couplings, meet preset packet capturing condition for the newly-built Media Stream of Real-Time Monitoring.Fig. 4 shows the situation of monitoring means 104 and detecting unit 102 couplings, and certainly, detecting unit 102 and monitoring means 104 can be separately positioned on detection module 10 inside, and detection module 10 also can only include one of them unit.
Above-mentioned packet capturing device can also comprise, when preset packet capturing condition is more under news, whether the Media Stream that starts packet capturing for judging meets the module of the preset packet capturing condition after renewal; In the situation that do not meet the preset packet capturing condition after renewal, stop the module of the packet capturing of Media Stream.
Preferably, whether above-mentioned detection module 10 can also meet the preset packet capturing condition after renewal for the newly-built Media Stream of Real-Time Monitoring.
Said apparatus is also for deleting preset packet capturing condition; Stop the packet capturing to all Media Streams.
Wherein, preset packet capturing condition comprise following one of at least: the IP address of far-end, the IP address of near-end, distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length.
Preferred embodiment two
This preferred embodiment provides a kind of device that carries out packet capturing in VOIP gateway device according to certain prerequisite, and the structured flowchart of this device as shown in Figure 5, comprises VOIP resource management module, Configuration Manager and packet capturing module.In the preferred embodiment, in device the name of each module slightly different from above-described embodiment, but can obtain identical effect with above-mentioned execution mode.
The packet capturing device of this preferred embodiment is in carrying out the process of above-mentioned packet snapping method, and each module is carried out respectively different functions, and each merit module and process are as follows:
(1) by Configuration Manager, certain packet capturing prerequisite is set.Configuration Manager notice VOIP resource management module after setting completed.
(2) VOIP resource management module is according to prerequisite, in all VOIP resources of system, finds and meets the Media Stream of prerequisite, as found, this Media Stream sets up, the packet capturing function of notifying packet capturing module automatically to open this Media Stream.
If the current Media Stream that does not meet prerequisite, judges whether this Media Stream meets prerequisite when all newly-built Media Streams afterwards, meet prerequisite VOIP resource management module and notify packet capturing module automatically to open packet capturing function.
No matter current whether had a Media Stream that meets prerequisite, and VOIP resource management module all can carry out Real-Time Monitoring contrast to newly-established Media Stream below, as long as meet prerequisite, all notifies packet capturing module to carry out packet capturing.
(3) after packet capturing prerequisite changes, Configuration Manager notice VOIP resource management module, first VOIP resource management module carries out Real-Time Monitoring contrast according to new prerequisite to newly-built Media Stream, to starting the Media Stream of packet capturing, judge whether to meet new prerequisite, do not meet the packet capturing of notifying packet capturing module to stop this Media Stream.
(4) when no longer needing to capture media stream data bag, by Configuration Manager, cancel packet capturing prerequisite, VOIP resource management module notice packet capturing module stops ongoing Media Stream and captures, and also no longer newly-built Media Stream is monitored or packet capturing later.
Below in conjunction with specific embodiment, further describe in detail.
At Configuration Manager, configure certain packet capturing prerequisite, for example configure the IP address of far-end, the IP address of near-end, the parameters such as distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length, above parameter can combination in any or requirement is set separately, also can be set to exclusion condition.Configuration Manager notice VOIP resource management module after configuration.For example configuring packet capturing prerequisite is that far-end IP scope is that 192.xxx.xxx.xxx distal end slogan scope is that 4000-5000(IP address or port numbers herein can, according to actual conditions arbitrary disposition, need only as effective value or effective range).
VOIP resource management module is according to prerequisite, in current all Media Streams of having set up, whether search has the Media Stream that meets prerequisite, if the area requirement, the remote port that have found far-end IP address to meet 192.xxx.xxx.xxx are the Media Stream in 4000-5000, notifies packet capturing module to carry out packet capturing for this Media Stream.Meanwhile, the Media Stream that VOIP resource management module Real-Time Monitoring is newly-built, also notifies packet capturing module to carry out packet capturing for this Media Stream if meet prerequisite.
If found, according to current prerequisite, catch the requirement that the bag coming does not meet us, or Media Stream is when too many, can further increase prerequisite, the area requirement that near-end IP is 10.xxx.xxx.xxx as increased in the condition of step 1, after packet capturing prerequisite changes, Configuration Manager notice VOIP resource management module, first VOIP resource management module carries out Real-Time Monitoring contrast according to new prerequisite to newly-built Media Stream, to starting the Media Stream of packet capturing, judge whether to meet new prerequisite, do not meet the packet capturing of notifying packet capturing module to stop this Media Stream.
After packet capturing finishes, by Configuration Manager, cancel prerequisite, Configuration Manager notice VOIP resource management module, VOIP resource management module stops the Real-Time Monitoring contrast to newly-built Media Stream, and notifies packet capturing module to stop ongoing Media Stream packet capturing.
As can be seen from the above description, the present invention has realized following technique effect:
The embodiment of the present invention can effectively solve the problem of large-scale VOIP gateway device Media Stream packet capturing difficulty under NGN network, further solved in correlation technique, call out while not taking relay resource, cannot learn concrete VOIP resource information by trunk information, cause carrying out the problem of corresponding packet capturing, and then also can to Media Stream, carry out packet capturing accurately when calling does not take relay resource, and promoted systematic function, improved user's experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a packet snapping method, is characterized in that, comprising:
Networking telephone VOIP gateway device detects the Media Stream that meets preset packet capturing condition;
Described VOIP gateway device carries out packet capturing to the described Media Stream detecting.
2. method according to claim 1, is characterized in that, the Media Stream that the detection of VOIP gateway device meets preset packet capturing condition comprises:
Described VOIP gateway device detects the Media Stream that meets described preset packet capturing condition in all VOIP resources in current system.
3. method according to claim 1 and 2, is characterized in that, the Media Stream that the detection of VOIP gateway device meets preset packet capturing condition comprises:
Whether the newly-built Media Stream of described VOIP gateway device Real-Time Monitoring meets described preset packet capturing condition.
4. method according to claim 3, is characterized in that, when described preset packet capturing condition is more under news, VOIP gateway device carries out packet capturing according to preset packet capturing condition and detects and comprise:
Whether the Media Stream that judgement has started packet capturing meets the preset packet capturing condition after renewal;
If do not meet the preset packet capturing condition after described renewal, stop the packet capturing of described Media Stream.
5. method according to claim 3, is characterized in that, when described preset packet capturing condition is more under news, VOIP gateway device detects the Media Stream that meets preset packet capturing condition and comprises:
Whether the newly-built Media Stream of described VOIP gateway device Real-Time Monitoring meets the described preset packet capturing condition after renewal.
6. method according to claim 1, is characterized in that, described VOIP gateway device also comprises after the described Media Stream detecting is carried out to packet capturing:
Described VOIP gateway device is deleted described preset packet capturing condition;
Described VOIP gateway device stops the packet capturing to all Media Streams.
7. method according to claim 1 and 2, is characterized in that, described preset packet capturing condition comprise following one of at least:
The IP address of far-end, the IP address of near-end, distal end slogan, proximal port number, far-end speech encoding and decoding, far-end packaging time length, near-end speech encoding and decoding, near-end packaging time length.
8. a packet capturing device, is applied to networking telephone VOIP gateway device, it is characterized in that, comprising:
Detection module, for detection of the Media Stream that meets preset packet capturing condition;
Packet capturing module, for carrying out packet capturing to the described Media Stream detecting.
9. device according to claim 8, is characterized in that, described detection module comprises:
Detecting unit, for surveying the Media Stream that meets described preset packet capturing condition in all VOIP resources of current system.
10. device according to claim 8 or claim 9, is characterized in that, described detection module also comprises:
Whether monitoring means, meet described preset packet capturing condition for the newly-built Media Stream of Real-Time Monitoring.
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Application publication date: 20140115 |