WO2016095751A1 - 一种域名解析方法及装置 - Google Patents

一种域名解析方法及装置 Download PDF

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Publication number
WO2016095751A1
WO2016095751A1 PCT/CN2015/097035 CN2015097035W WO2016095751A1 WO 2016095751 A1 WO2016095751 A1 WO 2016095751A1 CN 2015097035 W CN2015097035 W CN 2015097035W WO 2016095751 A1 WO2016095751 A1 WO 2016095751A1
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Prior art keywords
domain name
home gateway
name resolution
address
dns server
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PCT/CN2015/097035
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English (en)
French (fr)
Inventor
赵恩东
范娜
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中兴通讯股份有限公司
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Publication of WO2016095751A1 publication Critical patent/WO2016095751A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming

Definitions

  • the present invention relates to the field of communications, and in particular, to a domain name resolution method and apparatus.
  • the domain name resolution of the home gateway Internet (Internet) service is implemented by the domain name system (Domain Name System, DNS for short) of the home gateway.
  • DNS Domain Name System
  • the home device of the home gateway needs to access the Internet, you need to use the home gateway as a DNS proxy to complete the domain name resolution.
  • the resolution of this method is low, and it is easy to generate domain name parsing errors caused by different domain name resolution policies of the home gateway.
  • the main purpose of the embodiment of the present invention is to provide a new domain name resolution method, so as to overcome the related art, the method of using the home gateway as a DNS proxy to perform domain name resolution in the related art has low resolution efficiency, and It is easy to generate the domain name parsing error caused by the different domain name resolution policies of the home gateway.
  • an embodiment of the present invention provides a domain name resolution method and apparatus.
  • a domain name resolution method including: the home device of the home gateway obtains the IP address of the downlink device, the IP address of the home gateway, and the same wide area network as the home gateway from the home gateway.
  • WAN The IP address of the Domain Name System (DNS) server, and generates a domain name resolution request according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server; the attached device sends the DNS server through the home gateway.
  • the domain name resolution request causes the DNS server to perform domain name resolution according to the domain name resolution request and obtain the domain name resolution result; the attached device receives the domain name resolution result returned by the DNS server through the home gateway.
  • DNS Domain Name System
  • the hanging device interacts with the home gateway using the fourth version of Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • a domain name resolution device located in a home device, and includes a processing module configured to obtain an IP address of the device to be connected and an IP address of the home gateway from the home gateway. And an IP address of a Domain Name System (DNS) server belonging to the same wide area network (WAN) as the home gateway, and generating a domain name resolution request according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server; ,Assume
  • DNS Domain Name System
  • the domain name resolution request is sent to the DNS server through the home gateway, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains the domain name resolution result.
  • the receiving module is configured to receive the domain name resolution result returned by the DNS server through the home gateway.
  • the hanging device interacts with the home gateway using the fourth version of Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • a domain name resolution method including: a home gateway sending an IP address of a downlink device, an IP address of a home gateway, and a home gateway to a home device
  • DNS domain name system
  • WAN wide area network
  • the connected device generates a domain name resolution request according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server
  • the home gateway receives the device
  • the domain name resolution request is sent, and the domain name resolution request is forwarded to the DNS server, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains the domain name resolution result
  • the home gateway receives the domain name resolution result returned by the DNS server, and forwards the domain name resolution result to the Hang the device.
  • the hanging device interacts with the home gateway using the fourth version of Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • a domain name resolution device which is located at a home gateway, and includes: a sending module, configured to send an IP address of a downlink device and an IP address of a home gateway to a hanging device of the home gateway, And an IP address of a Domain Name System (DNS) server that belongs to the same wide area network (WAN) as the home gateway, so that the connected device generates a domain name resolution request according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • DNS Domain Name System
  • the first forwarding module is configured to receive the domain name resolution request sent by the attached device, and forward the domain name resolution request to the DNS server, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains the domain name resolution result; the second forwarding module sets The domain name resolution result returned by the DNS server is received, and the domain name resolution result is forwarded to the attached device.
  • the hanging device interacts with the home gateway using the fourth version of Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • a domain name resolution method including: a domain name system (DNS) server receiving a domain name resolution request sent by a home device of a home gateway through a home gateway, where the DNS server and the home gateway belong to The same wide area network (WAN), the domain name resolution request is generated by the attached device according to the IP address of the attached device obtained from the home gateway, the IP address of the home gateway, and the IP address of the DNS server; the DNS server requests according to the domain name resolution The domain name resolution is performed, and the obtained domain name resolution result is sent to the home gateway, so that the home gateway forwards the domain name resolution result to the downlink device.
  • DNS domain name system
  • a domain name resolution device which is located in a domain name system (DNS) server, and includes: a receiving module, configured to receive, by using a home gateway, a domain name resolution request sent by a device connected to the home gateway, where The DNS server and the home gateway belong to the same wide area network (WAN).
  • DNS domain name system
  • the domain name resolution request is generated by the attached device according to the IP address of the attached device obtained from the home gateway, the IP address of the home gateway, and the IP address of the DNS server.
  • the processing module is configured to perform domain name resolution according to the domain name resolution request, and send the obtained domain name resolution result to the home gateway, so that the home gateway forwards the domain name resolution result to the downlink device.
  • the domain name resolution method and device in the embodiment of the present invention can perform domain name resolution without using the home gateway as a DNS proxy, but directly use a DNS server that belongs to the same WAN as the home gateway to perform domain name resolution, and the home
  • the gateway only forwards the domain name resolution request sent by the attached device to the DNS server and forwards the domain name resolution result returned by the DNS server to the attached device, and does not perform other operations, thereby improving the efficiency of domain name resolution and avoiding The domain name resolution error caused by the different domain name resolution policies of the home gateway.
  • FIG. 1 is a flowchart of a domain name parsing method according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a domain name resolution apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a domain name parsing method according to another embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a domain name resolution apparatus according to another embodiment of the present invention.
  • FIG. 5 is a flowchart of a domain name parsing method according to still another embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a domain name resolution apparatus according to still another embodiment of the present invention.
  • FIG. 7 is a flow chart of using DHCP v4 interactive IP address information between a sink device and a home gateway according to a preferred embodiment of the present invention
  • FIG. 8 is a flow diagram of a sink device performing domain name resolution and opening a browser in accordance with a preferred embodiment of the present invention.
  • FIG. 1 is a flowchart of a domain name parsing method according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps (step S102 - step S106 ):
  • Step S102 The home device of the home gateway obtains the IP address of the downlink device, the IP address of the home gateway, and the Domain Name System (DNS) server that belongs to the same Wide Area Network (WAN) as the home gateway.
  • DNS Domain Name System
  • the IP address is generated based on the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • Step S104 The attached device sends a domain name resolution request to the DNS server through the home gateway, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains a domain name resolution result.
  • Step S106 The attached device receives the domain name resolution result returned by the DNS server through the home gateway.
  • the downlink device and the home gateway may interact with the fourth version of the Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • the device can send a request for obtaining the IP address and other information to the home gateway by using the DHCP Discover message in the DHCPv4 protocol.
  • the home gateway can use the DHCP Offer message under the DHCP v4 protocol. Send the IP address information to the attached device.
  • the downlink device needs to send the domain name resolution request to the home gateway first, and the home gateway uses the DNS function to analyze and re-encapsulate the domain name resolution request to form a domain name resolution request that can be used by the DNS server.
  • the downlink device does not need to use the home gateway as a DNS proxy, and only needs to be based on the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • a domain name resolution request can be directly generated by the DNS server.
  • the home gateway only plays the role of forwarding packets, which will inevitably improve the efficiency of domain name resolution.
  • FIG. 2 is a structural block diagram of a domain name resolution apparatus according to an embodiment of the present invention.
  • the domain name resolution apparatus includes: a processing module 21, a sending module 22, and a receiving module 23, where:
  • the processing module 21 is configured to obtain, from the home gateway, an IP address of the downlink device, an IP address of the home gateway, and an IP address of a Domain Name System (DNS) server belonging to the same wide area network (WAN) as the home gateway, and according to the downlink device
  • DNS Domain Name System
  • the IP address, the IP address of the home gateway, and the IP address of the DNS server generate a domain name resolution request
  • the sending module 22 is configured to send a domain name resolution request to the DNS server through the home gateway, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains The domain name resolution result
  • the receiving module 23 is configured to receive the domain name resolution result returned by the DNS server through the home gateway.
  • the downlink device and the home gateway may interact with the fourth version of the Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • the device can send a request for obtaining the IP address and other information to the home gateway by using the DHCP Discover message in the DHCPv4 protocol.
  • the home gateway can use the DHCP Offer message under the DHCP v4 protocol. Send the IP address information to the attached device.
  • the downlink device does not need to use the home gateway as
  • the DNS proxy can generate a domain name resolution request that the DNS server can directly use according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • the home gateway only plays the role of forwarding packets. It will inevitably improve the efficiency of domain name resolution.
  • FIG. 3 is a flowchart of a domain name parsing method according to another embodiment of the present invention. As shown in FIG. 3, the process includes the following steps (step S302-step S306):
  • Step S302 The home gateway sends the IP address of the downlink device, the IP address of the home gateway, and the IP address of the Domain Name System (DNS) server belonging to the same wide area network (WAN) as the home gateway to the downlink device of the home gateway, so that the home gateway
  • DNS Domain Name System
  • the device generates a domain name resolution request based on the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • Step S304 The home gateway receives the domain name resolution request sent by the connected device, and forwards the domain name resolution request to the DNS server, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains the domain name resolution result.
  • Step S306 The home gateway receives the domain name resolution result returned by the DNS server, and forwards the domain name resolution result to the downlink device.
  • the downlink device and the home gateway may interact with the fourth version of the Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • the device can send a request for obtaining the IP address and other information to the home gateway by using the DHCP Discover message in the DHCPv4 protocol.
  • the home gateway can use the DHCP Offer message under the DHCP v4 protocol. Send the IP address information to the attached device.
  • the downlink device does not need to use the home gateway as a DNS proxy, and only needs to be based on the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server. It can generate a domain name resolution request that can be directly used by the DNS server.
  • the home gateway only plays the role of forwarding packets, which will inevitably improve the efficiency of domain name resolution.
  • FIG. 4 is a structural block diagram of a domain name resolution apparatus according to another embodiment of the present invention.
  • the domain name resolution apparatus includes: a sending module 41, a first forwarding module 42, and a second forwarding module 43, wherein:
  • the sending module 41 is configured to send an IP address of the downlink device, an IP address of the home gateway, and an IP address of a Domain Name System (DNS) server belonging to the same wide area network (WAN) as the home gateway to the home device
  • DNS Domain Name System
  • the device is configured to generate a domain name resolution request according to the IP address of the device, the IP address of the home gateway, and the IP address of the DNS server.
  • the first forwarding module 42 is configured to receive the domain name resolution request sent by the device and resolve the domain name. The request is forwarded to the DNS server, so that the DNS server performs domain name resolution according to the domain name resolution request and obtains the domain name resolution result.
  • the second forwarding module 43 is configured to receive the domain name resolution result returned by the DNS server, and forward the domain name resolution result to the downlink device.
  • the downlink device and the home gateway may interact with the fourth version of the Dynamic Host Configuration Protocol (DHCP), DHCP v4.
  • DHCP Dynamic Host Configuration Protocol
  • the device can send a request for obtaining the IP address and other information to the home gateway by using the DHCP Discover message in the DHCPv4 protocol.
  • the home gateway can use the DHCP Offer message under the DHCP v4 protocol. Send the IP address information to the attached device.
  • FIG. 5 is a flowchart of a domain name parsing method according to still another embodiment of the present invention. As shown in FIG. 5, the process includes the following steps (step S502-step S504):
  • Step S502 The domain name system (DNS) server receives the domain name resolution request sent by the home device of the home gateway through the home gateway, where the DNS server and the home gateway belong to the same wide area network (WAN), and the domain name resolution request is determined by the attached device.
  • the IP address of the attached device obtained by the home gateway, the IP address of the home gateway, and the IP address of the DNS server are generated.
  • Step S504 The DNS server performs domain name resolution according to the domain name resolution request, and sends the obtained domain name resolution result to the home gateway, so that the home gateway forwards the domain name resolution result to the downlink device.
  • the hanging device does not need to use the home gateway as a DNS proxy, and only needs to generate a DNS server according to the IP address of the attached device, the IP address of the home gateway, and the IP address of the DNS server.
  • the domain name resolution request, the home gateway only plays the role of forwarding packets, which will inevitably improve the efficiency of domain name resolution.
  • FIG. 6 is a structural block diagram of a domain name resolution apparatus according to still another embodiment of the present invention.
  • the domain name resolution apparatus includes: a receiving module 61 and a processing module 62, where:
  • the receiving module 61 is configured to receive, by using the home gateway, a domain name resolution request sent by the home device of the home gateway, where the DNS server and the home gateway belong to the same wide area network (WAN), and the domain name resolution request is obtained by the offline device according to the slave home gateway.
  • the IP address of the connected device, the IP address of the home gateway, and the IP address of the DNS server are generated.
  • the processing module 62 is configured to perform domain name resolution according to the domain name resolution request, and send the obtained domain name resolution result to the home gateway.
  • the home gateway forwards the domain name resolution result to the attached device.
  • the foregoing embodiment can enable the home device of the home gateway to directly use the DNS server in the wide area network (WAN) for domain name resolution, without using the home gateway as a DNS proxy to complete the domain name resolution, and the hanging device uses the DHCP v4 protocol.
  • the home gateway can use the DHCP v4 protocol to carry the IP address of the DNS server in the WAN in the reply packet. In this way, the device can directly send the domain name analysis request when requesting the domain name.
  • the home gateway only needs to forward the domain name analysis request as a normal data message.
  • FIG. 8 is a home gateway device.
  • PC The domain name resolution method provided by the embodiment of the present invention is further described by taking the information such as the IP address of the home gateway, the IP address of the home gateway, and the ID address of the DNS server, and the browser to open the browser.
  • FIG. 7 is a flowchart of using DHCP v4 to exchange IP address information between a sink device and a home gateway according to a preferred embodiment of the present invention. As shown in FIG. 7, the process includes the following steps:
  • Step S702 the PC accesses the home gateway by using a wireless or wired manner
  • step S704 the PC sends a DHCP Discover message in the DHCP v4 protocol to the home gateway to obtain information such as the PC's own IP address, the IP address of the home gateway, and the IP address of the DNS server.
  • Step S706 The home gateway replies with a DHCP Offer message under the DHCP v4 protocol, where the packet carries the IP address of the PC, the IP address of the home gateway, and the IP address of the DNS server that belongs to the same WAN as the home gateway;
  • Step S708 the PC sends a DHCP Request message under the DHCP v4 protocol, and sends confirmation message confirming to the home gateway that the DHCP server in step S706 is the object of the domain name resolution request;
  • Step S710 the home gateway replies to the DHCP Ack packet under the DHCP v4 protocol;
  • Step S712 the PC configures information such as the IP address of the PC that the home gateway replies, the IP address of the home gateway, and the IP address of the DNS server.
  • FIG. 8 is a flowchart of performing a domain name resolution and opening a browser according to a preferred embodiment of the present invention. As shown in FIG. 8, the process includes the following steps:
  • step S802 the user opens the browser by using the PC.
  • the PC To access a web address, the PC first sends a domain name resolution request to the home gateway.
  • the destination IP address of the domain name resolution request is the IP address of the DNS server delivered by the home gateway in FIG. 7;
  • Step S804 The home gateway forwards the domain name request packet sent by the PC as an ordinary packet.
  • Step S806 the domain name resolution server (DNS server) performs domain name resolution according to the domain name request packet, and sends the obtained domain name resolution result to the home gateway;
  • DNS server domain name resolution server
  • Step S808 the home gateway directly forwards the domain name resolution result replied by the domain name resolution server to the PC as an ordinary packet;
  • step S810 after receiving the domain name resolution result, the PC may use the domain name resolution result to perform the next URL access.
  • the domain name resolution can be directly used by the DNS server that belongs to the same WAN as the home gateway.
  • the home gateway only forwards the domain name resolution request sent by the downlink device to the DNS server and returns the domain name resolution result returned by the DNS server.
  • the function of forwarding the device to the attached device without performing other operations can improve the efficiency of domain name resolution and avoid domain name resolution errors caused by different domain name resolution policies of the home gateway.
  • the home gateway can be used as a DNS proxy for domain name resolution, and the DNS server that belongs to the same WAN as the home gateway can be directly used for domain name resolution.
  • the home gateway only needs to forward the domain name resolution request sent by the downlink device to the DNS server and forward the domain name resolution result returned by the DNS server to the downlink device, without performing other operations, thereby improving the domain name resolution efficiency, and You can avoid domain name resolution errors caused by different domain name resolution policies of the home gateway.

Abstract

本发明公开了一种域名解析方法及装置。其中，该方法包括：家庭网关的下挂设备从家庭网关获取下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，并根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；下挂设备通过家庭网关向DNS服务器发送域名解析请求，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；下挂设备通过家庭网关接收DNS服务器返回的域名解析结果。通过本发明，达到了提高解析效率较低、避免由于家庭网关的域名解析策略不同而导致的域名解析错误的效果。

Description

一种域名解析方法及装置 技术领域
本发明涉及通信领域，尤其是涉及一种域名解析方法及装置。
背景技术
目前，家庭网关因特网(Internet)业务的域名解析是通过家庭网关的域名系统(Domain Name System，简称为DNS)代理实现的，当家庭网关的下挂设备(即接入到家庭网关的设备，例如，计算机、智能手机终端等设备)访问一个域名时，下挂设备会把域名解析请求报文发给家庭网关，家庭网关监听到域名解析请求报文后立即解析请求内容，然后再构造DNS请求报文后发送给真正的域名解析服务器，域名解析服务器解析成功后回复给家庭网关，家庭网关再把域名解析结果回复给下挂设备。
因此，家庭网关的下挂设备如果需要访问Internet，需要使用家庭网关做DNS代理才能完成域名解析。但是，这种方法的解析效率较低、且容易产生由于家庭网关的域名解析策略不同而导致的域名解析错误。
发明内容
本发明实施例的主要目的在于提供一种新的域名解析方式，以达到克服相关技术中只能使用下挂设备使用家庭网关做DNS代理，才能进行域名解析的方式具有的解析效率较低、且容易产生由于家庭网关的域名解析策略不同而导致的域名解析错误的目的。
为了达到上述目的，本发明实施例提供了一种域名解析方法及装置。
根据本发明实施例的一个方面，提供了一种域名解析方法，包括：家庭网关的下挂设备从家庭网关获取下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，并根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；下挂设备通过家庭网关向DNS服务器发送域名解析请求，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；下挂设备通过家庭网关接收DNS服务器返回的域名解析结果。
优选地，下挂设备与家庭网关采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。
根据本发明实施例的另一个方面，提供了一种域名解析装置，位于家庭网关的下挂设备，包括：处理模块，设置为从家庭网关获取下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，并根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；发送模块，设 置为通过家庭网关向DNS服务器发送域名解析请求，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；接收模块，设置为通过家庭网关接收DNS服务器返回的域名解析结果。
优选地，下挂设备与家庭网关采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。
根据本发明实施例的又一个方面，提供了一种域名解析方法，包括：家庭网关向家庭网关的下挂设备发送下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，使得下挂设备根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；家庭网关接收下挂设备发送的域名解析请求，并将域名解析请求转发给DNS服务器，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；家庭网关接收DNS服务器返回的域名解析结果，并将域名解析结果转发给下挂设备。
优选地，下挂设备与家庭网关采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。
根据本发明实施例的又一个方面，提供了一种域名解析装置，位于家庭网关，包括：发送模块，设置为向家庭网关的下挂设备发送下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，使得下挂设备根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；第一转发模块，设置为接收下挂设备发送的域名解析请求，并将域名解析请求转发给DNS服务器，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；第二转发模块，设置为接收DNS服务器返回的域名解析结果，并将域名解析结果转发给下挂设备。
优选地，下挂设备与家庭网关采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。
根据本发明实施例的又一个方面，提供了一种域名解析方法，包括：域名系统(DNS)服务器通过家庭网关接收家庭网关的下挂设备发送的域名解析请求，其中，DNS服务器与家庭网关属于同一个广域网(WAN)，域名解析请求是由下挂设备根据从家庭网关获取到的下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成的；DNS服务器根据域名解析请求进行域名解析，并将得到的域名解析结果发送给家庭网关，使得家庭网关将域名解析结果转发给下挂设备。
根据本发明实施例的还一个方面，提供了一种域名解析装置，位于域名系统(DNS)服务器，包括：接收模块，设置为通过家庭网关接收家庭网关的下挂设备发送的域名解析请求，其中，DNS服务器与家庭网关属于同一个广域网(WAN)，域名解析请求是由下挂设备根据从家庭网关获取到的下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成的；处理模块，设置为根据域名解析请求进行域名解析，并将得到的域名解析结果发送给家庭网关，使得家庭网关将域名解析结果转发给下挂设备。
与相关技术相比，本发明实施例所述的域名解析方法及装置，可以不使用家庭网关作为DNS代理进行域名解析，而是直接使用与家庭网关同属于一个WAN的DNS服务器进行域名解析，家庭网关只起到将下挂设备发送的域名解析请求转发给DNS服务器和将DNS服务器返回的域名解析结果转发给下挂设备的作用，而不执行其他操作，从而可以提高域名解析效率，且可以避免由于家庭网关的域名解析策略不同而导致的域名解析错误。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例一个实施方式的域名解析方法流程图；
图2是根据本发明实施例一个实施方式的域名解析装置的结构框图；
图3是根据本发明实施例另一个实施方式的域名解析方法流程图；
图4是根据本发明实施例另一个实施方式的域名解析装置的结构框图；
图5是根据本发明实施例又一个实施方式的域名解析方法流程图；
图6是根据本发明实施例又一个实施方式的域名解析装置的结构框图；
图7是根据本发明优选实施例的下挂设备与家庭网关采用DHCP v4交互IP地址信息的流程图；以及
图8是根据本发明优选实施例的下挂设备执行域名解析并打开浏览器的流程图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域的普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供了一种域名解析方法，该方法可以应用于家庭网关的下挂设备。图1是根据本发明实施例一个实施方式的域名解析方法流程图，如图1所示，该流程包括以下步骤(步骤S102-步骤S106)：
步骤S102、家庭网关的下挂设备从家庭网关获取下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(Wide Area Network，简称为WAN)的域名系统(DNS)服务器的IP地址，并根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求。
步骤S104、下挂设备通过家庭网关向DNS服务器发送域名解析请求，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果。
步骤S106、下挂设备通过家庭网关接收DNS服务器返回的域名解析结果。
在本发明实施例中，在下挂设备从家庭网关上获取IP地址等信息的过程中，下挂设备与家庭网关可以采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。例如，下挂设备在成功接入家庭网关后，可以使用DHCP v4协议下的DHCP Discover报文将获取IP地址等信息的请求发送给家庭网关，家庭网关可以使用DHCP v4协议下的DHCP Offer报文将IP地址信息发送给下挂设备。
在相关技术中，下挂设备需要先将域名解析请求发送到家庭网关，家庭网关使用DNS功能，将域名解析请求进行分析和重新封装后形成一个DNS服务器能够使用的域名解析请求，然而，通过本发明实施例的上述各个步骤(步骤S102-步骤S106)，下挂设备无需再将家庭网关作为DNS代理，只需根据下挂设备的IP地址、家庭网关的IP地址以及DNS服务器的IP地址就可以生成一个DNS服务器能够直接使用的域名解析请求，家庭网关只起到转发报文的作用，这样必然会提高域名解析的效率。
对应于图1所示的域名解析方法，本发明实施例还提供了一种域名解析装置，位于家庭网关的下挂设备，用以执行图1所示的域名解析方法。图2是根据本发明实施例一个实施方式的域名解析装置的结构框图，如图2所示，该域名解析装置，包括：处理模块21、发送模块22以及接收模块23，其中：
处理模块21，设置为从家庭网关获取下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，并根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；发送模块22，设置为通过家庭网关向DNS服务器发送域名解析请求，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；接收模块23，设置为通过家庭网关接收DNS服务器返回的域名解析结果。
同样地，在下挂设备从家庭网关上获取IP地址等信息的过程中，下挂设备与家庭网关可以采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。例如，下挂设备在成功接入家庭网关后，可以使用DHCP v4协议下的DHCP Discover报文将获取IP地址等信息的请求发送给家庭网关，家庭网关可以使用DHCP v4协议下的DHCP Offer报文将IP地址信息发送给下挂设备。
使用图2所示的域名解析装置进行域名解析的过程中，下挂设备无需再将家庭网关作为 DNS代理，只需根据下挂设备的IP地址、家庭网关的IP地址以及DNS服务器的IP地址就可以生成一个DNS服务器能够直接使用的域名解析请求，家庭网关只起到转发报文的作用，这样必然会提高域名解析的效率。
本发明还提供了一种域名解析方法，该方法可以应用于家庭网关。图3是根据本发明实施例另一个实施方式的域名解析方法流程图，如图3所示，该流程包括以下步骤(步骤S302-步骤S306)：
步骤S302、家庭网关向家庭网关的下挂设备发送下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，使得下挂设备根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求。
步骤S304、家庭网关接收下挂设备发送的域名解析请求，并将域名解析请求转发给DNS服务器，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果。
步骤S306、家庭网关接收DNS服务器返回的域名解析结果，并将域名解析结果转发给下挂设备。
在下挂设备从家庭网关上获取IP地址等信息的过程中，下挂设备与家庭网关可以采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。例如，下挂设备在成功接入家庭网关后，可以使用DHCP v4协议下的DHCP Discover报文将获取IP地址等信息的请求发送给家庭网关，家庭网关可以使用DHCP v4协议下的DHCP Offer报文将IP地址信息发送给下挂设备。
通过本发明实施例的上述各个步骤(步骤S302-步骤S306)，下挂设备无需再将家庭网关作为DNS代理，只需根据下挂设备的IP地址、家庭网关的IP地址以及DNS服务器的IP地址就可以生成一个DNS服务器能够直接使用的域名解析请求，家庭网关只起到转发报文的作用，这样必然会提高域名解析的效率。
对应于图3所示的域名解析方法，本发明实施例还提供了一种域名解析装置位于家庭网关，用于执行图3所示的域名解析方法。图4是根据本发明实施例另一个实施方式的域名解析装置的结构框图，如图4所示，该域名解析装置包括：发送模块41、第一转发模块42以及第二转发模块43，其中：
发送模块41，设置为向家庭网关的下挂设备发送下挂设备的IP地址、家庭网关的IP地址，以及与家庭网关属于同一个广域网(WAN)的域名系统(DNS)服务器的IP地址，使得下挂设备根据下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成域名解析请求；第一转发模块42，设置为接收下挂设备发送的域名解析请求，并将域名解析请求转发给DNS服务器，使得DNS服务器根据域名解析请求进行域名解析并得到域名解析结果；第二转发模块43，设置为接收DNS服务器返回的域名解析结果，并将域名解析结果转发给下挂设备。
在下挂设备从家庭网关上获取IP地址等信息的过程中，下挂设备与家庭网关可以采用动态主机配置协议(DHCP)的第四版本DHCP v4进行交互。例如，下挂设备在成功接入家庭网关后，可以使用DHCP v4协议下的DHCP Discover报文将获取IP地址等信息的请求发送给家庭网关，家庭网关可以使用DHCP v4协议下的DHCP Offer报文将IP地址信息发送给下挂设备。
本发明实施例还提供了一种域名解析方法，可以应用于DNS服务器。图5是根据本发明实施例又一个实施方式的域名解析方法流程图，如图5所示，该流程包括以下步骤(步骤S502-步骤S504)：
步骤S502、域名系统(DNS)服务器通过家庭网关接收家庭网关的下挂设备发送的域名解析请求，其中，DNS服务器与家庭网关属于同一个广域网(WAN)，域名解析请求是由下挂设备根据从家庭网关获取到的下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成的。
步骤S504、DNS服务器根据域名解析请求进行域名解析，并将得到的域名解析结果发送给家庭网关，使得家庭网关将域名解析结果转发给下挂设备。
通过执行步骤S502-步骤S504，下挂设备无需再将家庭网关作为DNS代理，只需根据下挂设备的IP地址、家庭网关的IP地址以及DNS服务器的IP地址就可以生成一个DNS服务器能够直接使用的域名解析请求，家庭网关只起到转发报文的作用，这样必然会提高域名解析的效率。
对应于图5所示的域名解析方法，本发明实施例还提供了一种域名解析装置，位于域名系统(DNS)服务器，用于执行图5所示的域名解析方法。图6是根据本发明实施例又一个实施方式的域名解析装置的结构框图，如图6所示，该于域名解析装置包括：接收模块61和处理模块62，其中：
接收模块61，设置为通过家庭网关接收家庭网关的下挂设备发送的域名解析请求，其中，DNS服务器与家庭网关属于同一个广域网(WAN)，域名解析请求是由下挂设备根据从家庭网关获取到的下挂设备的IP地址、家庭网关的IP地址，以及DNS服务器的IP地址生成的；处理模块62，设置为根据域名解析请求进行域名解析，并将得到的域名解析结果发送给家庭网关，使得家庭网关将域名解析结果转发给下挂设备。
由此可见，上述实施例可以使得家庭网关的下挂设备直接使用广域网(WAN)中的DNS服务器进行域名解析，而无需再使用家庭网关做DNS代理才能完成域名解析，下挂设备使用DHCP v4协议获取设备的IP地址等信息时，家庭网关就可以使用DHCP v4协议在回复报文中携带WAN中的DNS服务器的IP地址，采用这样的方式，下挂设备进行域名请求时可以直接发送域名分析请求给DNS服务器，而家庭网关也只需把这个域名分析请求作为普通的数据报文进行转发。
为便于理解上述实施例的实现过程，以下优选实施例结合图8，并以家庭网关的下挂设备 (PC)从家庭网关获取自己的IP地址、家庭网关的IP地址和DNS服务器的ID地址等信息，以及打开浏览器进行网址访问为例，对本发明实施例提供的域名解析方法进行进一步的描述。
图7是根据本发明优选实施例的下挂设备与家庭网关采用DHCP v4交互IP地址信息的流程图，如图7所示，该流程包括以下步骤：
步骤S702，PC使用无线或者有线的方式接入家庭网关；
步骤S704，PC使用DHCP方式，向家庭网关发送DHCP v4协议下的DHCP Discover报文，以获取PC自己的IP地址、家庭网关的IP地址和DNS服务器的IP地址等信息；
步骤S706，家庭网关回复DHCP v4协议下的DHCP Offer报文，报文中携带PC的IP地址、家庭网关的IP地址和与家庭网关属于同一个WAN的DNS服务器的IP地址等信息；
步骤S708，PC发送DHCP v4协议下的DHCP Request报文，向家庭网关发送确认选择步骤S706中的DHCP服务器作为域名解析请求的对象的确认信息；
步骤S710，家庭网关回复DHCP v4协议下的DHCP Ack报文；
步骤S712，PC配置家庭网关回复的PC的IP地址、家庭网关的IP地址和DNS服务器的IP地址等信息。
图8是根据本发明优选实施例的下挂设备执行域名解析并打开浏览器的流程图，如图8所示，该流程包括以下步骤：
步骤S802，用户使用PC打开浏览器，欲访问一个网址，PC首先向家庭网关发送域名解析请求，域名解析请求的目的IP地址为图7中家庭网关下发的DNS服务器的IP地址；
步骤S804，家庭网关把PC发送的域名请求报文作为普通报文转发；
步骤S806，域名解析服务器(DNS服务器)根据域名请求报文进行域名解析，将得到的域名解析结果发送给家庭网关；
步骤S808，家庭网关直接将域名解析服务器回复的域名解析结果作为普通报文转发给PC；
步骤S810，PC收到域名解析结果后，可以使用域名解析结果进行下一步网址访问。
通过上述优选实施例，可以直接使用与家庭网关同属于一个WAN的DNS服务器进行域名解析，家庭网关只起到将下挂设备发送的域名解析请求转发给DNS服务器和将DNS服务器返回的域名解析结果转发给下挂设备的作用，而不执行其他操作，从而可以提高域名解析效率，且可以避免由于家庭网关的域名解析策略不同而导致的域名解析错误。
以上所述是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为包含在本发明的保护范围之内。
工业实用性
本发明实施例上述提供的技术方案，应用于域名解析过程中，通过本实施例可以不使用家庭网关作为DNS代理进行域名解析，而是直接使用与家庭网关同属于一个WAN的DNS服务器进行域名解析，家庭网关只起到将下挂设备发送的域名解析请求转发给DNS服务器和将DNS服务器返回的域名解析结果转发给下挂设备的作用，而不执行其他操作，从而可以提高域名解析效率，且可以避免由于家庭网关的域名解析策略不同而导致的域名解析错误。

Claims (10)

  1. 一种域名解析方法，包括：
    家庭网关的下挂设备从所述家庭网关获取所述下挂设备的IP地址、所述家庭网关的IP地址，以及与所述家庭网关属于同一个广域网WAN的域名系统DNS服务器的IP地址，并根据所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成域名解析请求；
    所述下挂设备通过所述家庭网关向所述DNS服务器发送所述域名解析请求，使得所述DNS服务器根据所述域名解析请求进行域名解析并得到域名解析结果；
    所述下挂设备通过所述家庭网关接收所述DNS服务器返回的所述域名解析结果。
  2. 根据权利要求1所述的方法，其中，所述下挂设备与所述家庭网关采用动态主机配置协议DHCP的第四版本DHCP v4进行交互。
  3. 一种域名解析装置，位于家庭网关的下挂设备，包括：
    处理模块，设置为从所述家庭网关获取所述下挂设备的IP地址、所述家庭网关的IP地址，以及与所述家庭网关属于同一个广域网WAN的域名系统DNS服务器的IP地址，并根据所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成域名解析请求；
    发送模块，设置为通过所述家庭网关向所述DNS服务器发送所述域名解析请求，使得所述DNS服务器根据所述域名解析请求进行域名解析并得到域名解析结果；
    接收模块，设置为通过所述家庭网关接收所述DNS服务器返回的所述域名解析结果。
  4. 根据权利要求3所述的装置，其中，所述下挂设备与所述家庭网关采用动态主机配置协议DHCP的第四版本DHCP v4进行交互。
  5. 一种域名解析方法，包括：
    家庭网关向所述家庭网关的下挂设备发送所述下挂设备的IP地址、所述家庭网关的IP地址，以及与所述家庭网关属于同一个广域网WAN的域名系统DNS服务器的IP地址，使得所述下挂设备根据所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成域名解析请求；
    所述家庭网关接收所述下挂设备发送的所述域名解析请求，并将所述域名解析请求转发给所述DNS服务器，使得所述DNS服务器根据所述域名解析请求进行域名解析并得到域名解析结果；
    所述家庭网关接收所述DNS服务器返回的所述域名解析结果，并将所述域名解析结果转发给所述下挂设备。
  6. 根据权利要求5所述的方法，其中，所述下挂设备与所述家庭网关采用动态主机配置协 议DHCP的第四版本DHCP v4进行交互。
  7. 一种域名解析装置，位于家庭网关，包括：
    发送模块，设置为向所述家庭网关的下挂设备发送所述下挂设备的IP地址、所述家庭网关的IP地址，以及与所述家庭网关属于同一个广域网WAN的域名系统DNS服务器的IP地址，使得所述下挂设备根据所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成域名解析请求；
    第一转发模块，设置为接收所述下挂设备发送的所述域名解析请求，并将所述域名解析请求转发给所述DNS服务器，使得所述DNS服务器根据所述域名解析请求进行域名解析并得到域名解析结果；
    第二转发模块，设置为接收所述DNS服务器返回的所述域名解析结果，并将所述域名解析结果转发给所述下挂设备。
  8. 根据权利要求7所述的装置，其中，所述下挂设备与所述家庭网关采用动态主机配置协议DHCP的第四版本DHCP v4进行交互。
  9. 一种域名解析方法，包括：
    域名系统DNS服务器通过家庭网关接收所述家庭网关的下挂设备发送的域名解析请求，其中，所述DNS服务器与所述家庭网关属于同一个广域网WAN，所述域名解析请求是由所述下挂设备根据从所述家庭网关获取到的所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成的；
    所述DNS服务器根据所述域名解析请求进行域名解析，并将得到的域名解析结果发送给所述家庭网关，使得所述家庭网关将所述域名解析结果转发给所述下挂设备。
  10. 一种域名解析装置，位于域名系统DNS服务器，包括：
    接收模块，设置为通过家庭网关接收所述家庭网关的下挂设备发送的域名解析请求，其中，所述DNS服务器与所述家庭网关属于同一个广域网WAN，所述域名解析请求是由所述下挂设备根据从所述家庭网关获取到的所述下挂设备的IP地址、所述家庭网关的IP地址，以及所述DNS服务器的IP地址生成的；
    处理模块，设置为根据所述域名解析请求进行域名解析，并将得到的域名解析结果发送给所述家庭网关，使得所述家庭网关将所述域名解析结果转发给所述下挂设备。
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