CN106411842B - 在内容中心网络堆栈中传输状态 - Google Patents

在内容中心网络堆栈中传输状态 Download PDF

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CN106411842B
CN106411842B CN201610591168.3A CN201610591168A CN106411842B CN 106411842 B CN106411842 B CN 106411842B CN 201610591168 A CN201610591168 A CN 201610591168A CN 106411842 B CN106411842 B CN 106411842B
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I·索利斯
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Abstract

本发明的一个实施例提供一种促进在内容中心网络中传输堆栈的状态的计算机系统。操作中，所述系统通过通信组件从协调实体接收存储组件的当前状态的命令消息，其中，所述通信组件用在处理基于名称的消息中，并且其中，名称是分层结构可变长度标识符(HSVLI)，其包括从最概括级到最具体级排序的连续名称组件。所述系统确定所述通信组件的当前状态。随后，所述系统在数据结构中存储所述通信组件的当前状态。

Description

在内容中心网络堆栈中传输状态
技术领域
本申请一般涉及传输框架。更具体地，本申请涉及用于在内容中心网络中传输或复制堆栈的状态的系统和方法。
背景技术
移动计算装置和互联网无处不在，这使得人们可以从任何地方体验数字内容。人们可以使用移动计算装置中的应用来消费来自互联网上的服务提供商的内容或与之交互，诸如以流形式播放电影或音乐或与别人玩游戏。移动计算装置的这些先进之处还提高了可以被这些移动装置再现的内容的质量，并大大提高了可以生成和捕获数字内容并通过互联网与其它人分享的装置的数量。如今，即便很小的移动装置，诸如智能手机都可以产生具有高质量颜色再现的全高清视频，高速蜂窝和宽带网络使得用户可以通过各种互联网服务（诸如YouTube（来自Google公司）和Facebook（来自Facebook公司）内容分享服务）与其它人分享此内容。
许多计算机应用利用这些计算机网络和互联网服务向其用户提供社交特征，这大大地提升了用户体验。当应用想要使用网络时，他通过使用在计算装置的操作系统上运行的一个或多个应用编程接口（API）来进行。这些API提供一种应用发送、接收、存储、配置数据或另外与网络上的其它计算机通信的方式。
例如，在应用可以使用API通过网络发送或接收数据之前，应用实例化实现网络API的协议堆栈。在基于例如开放系统互连（OSI）模型的传统的协议堆栈中，每一层只可以与他之上或之下的层通信。在基于内容中心网络（CCN）的模型中，协议堆栈可以被动态地创建以满足各个应用使用的API的需求。尽管这些应用驱动的协议堆栈的创建可以提高系统的灵活性，但其它需求（例如故障转移、负载平衡和其它网络有关的需要）可能导致需要通过将堆栈状态从一个位置传输到另一位置来移动、传输或复制堆栈。
发明内容
一个实施例提供一种促进在CCN中传输堆栈的状态的传输框架系统。操作中，所述系统通过通信组件从协调实体接收存储组件的当前状态的命令消息，其中，所述通信组件用在处理基于名称的消息中，并且其中，名称是分层结构可变长度标识符（HSVLI），其包括从最概括级到最具体级排序的连续名称组件。所述系统确定所述通信组件的当前状态。然后，所述系统在数据结构中存储所述通信组件的当前状态。
在一些实施例中，所述系统接收与兴趣消息对应的第一包，其中，所述兴趣消息指示对所述数据结构的请求，并包括所述数据结构的名称。
在一些实施例中，所述第一包从以下的一个或多个接收：通信模块的堆栈的管理器组件，其中，管理器组件用在处理所述协调实体和所述通信模块之间的消息中，其中，堆栈不要求相应的通信模块只与其上或其下的层通信，并且其中，所述通信组件属于所述堆栈；以及协调实体，所述协调实体是以下的一个或多个：所述堆栈外部的实体或服务；以及与所述堆栈关联的应用。
在一些实施例中，所述系统生成与内容对象消息对应的第二包，其中，所述内容对象消息包括所述数据结构和所述数据结构的名称。
在一些实施例中，所述系统生成指示所述当前状态存储于所述数据结构中的通知消息，其中，所述通知消息包括所述数据结构的名称。
在一些实施例中，所述数据结构指示由所述通信组件在处理所述消息时存储的一个或多个兴趣或内容对象消息。
在一些实施例中，所述数据结构是清单，其中，清单指示一组内容对象和其相应摘要，其中，相应的内容对象是数据对象或另一清单，并且其中，清单和内容对象各自指示名称。
在一些实施例中，响应于接收对当前状态的请求，所述系统发送所述当前状态。
在又一变形中，所述通信组件是通信模块的堆栈的组件，其中，所述堆栈不要求相应的通信模块只与其上或其下的层通信。
在一些实施例中，所述系统确定堆栈的一个或多个其它通信组件的当前状态。响应于确定所述其它通信组件的当前状态是未决状态，所述系统等待其它通信组件的就绪状态的指示符。
在一些实施例中，协调实体是以下的一个或多个：堆栈外部的实体或服务；以及与堆栈关联的应用。
在一些实施例中，所述命令消息通过堆栈的管理器组件从协调实体接收，其中，管理器组件用在处理协调实体和通信模块之间的消息中。
附图说明
图1A图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性环境。
图1B图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性环境。
图2A图解说明根据本发明的实施例的示例性传输框架和传输堆栈。
图2B图解说明根据本发明的实施例与图2A对应的示例性传输框架和传输堆栈。
图3A呈现一流程图，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法。
图3B呈现一流程图，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法，其中，协调器通过堆栈管理器与堆栈通信。
图3C呈现一流程图，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法，其中，协调器与另一应用通信。
图4呈现一流程图，该流程图图解说明根据本发明的实施例用于由堆栈组件促进堆栈的传输的方法。
图5图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性设备。
图6图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性计算机系统。
附图中，相同的附图标记指相同的附图元件。
具体实施方式
给出以下描述使得本领域技术人员能够制造和使用实施例，以下描述是在特定应用和其需求的背景下提供的。对所公开实施例的各种改进对本领域技术人员是非常显然的，在不偏离本申请的精神和范围下，本文中定义的一般原理可以应用于其它实施例和应用。因此，本发明不局限于所显示的实施例，而是给予与本文中公开的原理和特征一致的最宽范围。
概述
本发明的实施例提供一种促进在内容中心网络（CCN）中传输堆栈的状态的传输框架系统。在CCN中，传输框架使高级别的API能够对框架内的一个或多个传输堆栈进行实例化。传输堆栈可以包括多个组件或通信模块，并且不遵守传统的分层模型（例如OSI），在传统分层模型中，每个组件只与它之上或之下的组件通信。传输堆栈可以被动态地创建，并在运行时配置，其中，传输堆栈内的每个组件执行特定功能。例如，传输堆栈的一个组件可以是验证器组件，其负责验证响应于通过网络发送的兴趣接收的内容对象的数字签名。CCN传输堆栈是可配置、可扩展的，如美国专利申请号14/595,060中描述的。
应用可以通过向API发出呼叫来发起通过网络的通信。在通信过程中，CCN传输堆栈和堆栈的每个组件更新其相应状态。例如，流量控制器组件可以保持30个未完成兴趣的运行窗大小和队列中用于发布的未完成或未决兴趣的列表。验证器组件可以存储当前使用的一组密钥和未来使用的一组旋转密钥。在故障转移、负载平衡或用于资源分配的其它需求的情况下，应用可能希望实例化不同位置的堆栈。为此，系统将堆栈状态从一个传输框架传送到另一传输框架（例如从一个装置到驻存在不同物理位置的另一装置）。系统可以从堆栈提取堆栈状态，使用提取的堆栈状态实例化不同位置的另一堆栈，创建新“传输的”或“复制的”堆栈。
具体地，外部协调实体（“协调器”）可以触发传输堆栈的过程。协调器通知堆栈（例如通过堆栈管理器组件）准备好传输，堆栈又通知每个组件准备好传输。每个组件存储其状态，通知堆栈其就绪状态。当所有组件都已经通知堆栈其就绪状态时，堆栈（例如堆栈管理器组件）又通知协调器就绪状态。随后，协调器可以从堆栈请求堆栈状态，向另一应用发送用于传输（例如实例化）的堆栈状态。替代性地，协调器可以向另一应用发送就绪消息，允许另一应用直接从堆栈请求堆栈状态，而不用牵涉到协调器。协调器还可以向另一应用提供堆栈、堆栈组件和其相应状态的唯一名称。传输堆栈名称方案和身份管理在美国专利申请号14/746,490中描述。
在一些实施例中，传输框架在CCN架构下操作。在CCN中，每一项内容是单独命名的，每项数据绑定到将该数据与任何其它项数据相区分的唯一名称，诸如同一数据的其它形式或来自其它源的数据。此唯一名称允许网络装置通过传播指示唯一名称的请求或兴趣来请求数据，并且可以获得与数据的存储位置、网络位置、应用和传输手段无关的数据。以下词语用来描述CCN架构：
内容对象（或“Content Object”）：单一一项命名数据，其绑定到唯一名称。内容对象是“永久的”，这意味着内容对象可以在计算装置内或者在不同的计算装置中移动，但不会改变。如果内容对象的任何组成变化，则出现变化的实体创建包括更新内容的新内容对象，将新内容对象绑定到新唯一名称。
唯一名称（Unique Name）：CCN中的名称通常是与位置无关的，唯一地标识内容对象。数据转发装置不管内容对象的网络地址或物理位置如何，可以使用名称或名称前缀将包向生成或存储内容对象的网络节点转发。在一些实施例中，名称可以是分层结构的可变长度标识符（HSVLI）。HSVLI可以分成几个分层组成，这些组成可以以各种方式构造。例如，个别的名称组成parc,home, ccn,和test.txt可以以左对齐的前缀为主的方式构造，形成名称“/parc/home/ndn/test.txt”。因此，名称“/parc/home/ccn”可以是“/parc/home/ccn/test.txt”的“父”或“前缀”。附加组成可以用来区分内容项目的不同形式，诸如合作文档。
在一些实施例中，名称可以包括标识符，诸如由内容对象的数据（例如检验和值）和/或从内容对象的名称的组成导出的散列值。基于散列的名称的描述在美国专利申请号13/847,814中描述。名称还可以是扁平标签（flat label）。后面，“名称”用来指在命名数据网络中一条数据的任何名称，诸如层次名称或名称前缀，扁平名称（flat name），固定长度的名称，任意长度的名称，或者标签（例如多协议标签交换（MPLS）标签）。
兴趣（或“Interest”）：指示对一条数据的请求的包，包括该条数据的名称（或名称前缀）。数据消费者可以在信息中心网络中传播请求或兴趣，CCN/NDN路由器可以向可以提供请求数据的存储装置（例如缓存服务器）或数据生产者播送，以满足请求或兴趣。
本文中公开的方法不局限于CCN网络，还可以应用于其它架构。CCN架构的描述在美国专利申请号12/338,175中描述。
示例性网络和通信
图1A图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性环境100。计算环境100可以包括计算机网络102，诸如CCN。环境100还可以包括与本地计算装置104关联的用户106和远程计算装置108和190。装置104可以具有与传输框架130关联的内部传输堆栈131。在传统的IP架构中，转发器是基于IP的转发器，其查看包的标题以确定包的源和目的地，并将包转发到目的地。堆栈执行TCP/UDP，应用通过套接字与堆栈交互。相反，本发明的装置104不使用传统的“堆栈”。而是，装置104通过应用110可以请求与端口120对应的端口API实例，端口120对应于传输框架130。应用110可以产生检索或创建与端口120关联的端口API实例的请求。端口实例创建在美国专利申请号14/746,490中描述。
装置104可以包括耦连到网络102的任何计算装置，诸如智能手机104.1，平板电脑104.2和/或服务器或个人计算机104.3。特别地，装置104可以包括通过端口120与传输框架130通信的应用110。传输框架130可以包括堆栈组件132、134、136和138。装置104还可以包括转发器140（例如局域网中的网络接口卡或路由器），其可以在传输框架130的堆栈（和各个堆栈组件）和网络102之间传输包。装置108和190可以包括耦连到网络102的任何计算装置，诸如服务器或终端主机装置。装置108还可以包括应用150，装置190还可以包括具有协调功能以确定并发起如本文中描述的堆栈传输的任何计算装置。
图1B图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性环境100。操作中，装置或“协调器”190可以向传输堆栈131和堆栈组件132-138发布通知消息以准备好移动。堆栈组件132-138存储其各自的状态，并通知堆栈131就绪状态。堆栈131又通知协调器190就绪状态，协调器190然后可以从堆栈131请求堆栈的状态（“堆栈状态”）。堆栈状态可以是对象，其指示由每个堆栈组件存储的各个状态，如关于图2A在下文描述的。一旦从堆栈131接收堆栈状态，协调器190可以通过向装置108发送堆栈状态来传输堆栈状态，这可以通过应用150实例化传输框架170的传输堆栈171。传输堆栈171可以基于从协调器190接收的堆栈131的堆栈状态被实例化。传输堆栈171可以包括堆栈组件172、174、176和178，他们具有与堆栈131的堆栈组件132-138相同的状态。因此，协调器190发起并处理堆栈131的状态从框架130到框架170的传输。尽管堆栈状态的传输可以出于故障转移原因执行（因此导致堆栈131的破坏），但传输还可以出于活动负载平衡目的执行（因此可以使堆栈131完整）。在一些实施例中，一旦实例化堆栈171，装置108的应用150可以向协调器190发送指示堆栈传输完成的消息。协调器190又可以向应用110发送指示堆栈传输完成的消息，并且还可以包括恢复堆栈的操作的命令消息。
示例性传输框架
图2A图解说明根据本发明的实施例的示例性传输框架230和传输堆栈231。协调器290可以与应用210通信，应用210可以驻存在通过网络202通信的节点或装置上。应用210可以使用API 212、214和216来通过网络202通信，API 212-216可以通过端口220与传输框架230交互。传输框架230可以包括一个或多个传输堆栈，每个传输堆栈包括多个堆栈组件或通信模块。在图2A中，传输框架230描绘了包括堆栈组件232、234、236、238和242的一个传输堆栈（例如传输堆栈231）。API适配器232可以在API和特定的传输堆栈和传输框架230之间通信。流量控制器234可以形成和管理通信量、为兴趣形成管道并发送兴趣，预订内容对象。验证器/签名器236可以对目的地为网络元件的内容对象编码和签名，解码并验证目的地为关联应用的内容对象，编码目的地为网络元件的兴趣和解码目的地为关联应用的兴趣。转发器/适配器238可以与转发器240通信。转发器240可以通过网络202与其它转发器通信。其它堆栈组件（未显示）可以包括与安全（例如加密、解密、认证、数据签名、签名验证、信任评估和过滤）、数据处理（例如编码、解码、封装、解封装、转码、压缩、提取和解压缩）和存储（例如数据存储、从存储装置检索数据、删除重复、分割和版本化）相关的功能。
协调器290可以通过应用210和API 212-216中的一个和端口220向堆栈231发送消息292。消息292可以是通知堆栈准备好传输的命令消息（“传输命令消息”）。堆栈管理器组件242可以接收并向堆栈组件232-238传送传输命令消息，堆栈组件232-238中的每一个确定并在数据结构中存储其状态。例如，流量控制器234可以确定并在组件状态234.1数据对象中存储其状态。一旦存储其状态，每个组件则可以向管理器242发送其就绪状态的通知消息（“组件就绪消息”），并且一旦从每个堆栈组件接收组件就绪消息，管理器242可以向协调器290发送指示堆栈231处于就绪状态的通知消息293（“堆栈就绪消息”）。在一些实施例中，管理器242可以组合堆栈状态242.1内容对象，这指示组件状态232.1、234.1、236.1和238.1的每个数据对象。管理器242与其它堆栈组件一样，可以确定并存储其自己的堆栈状态（未显示），其还可以在堆栈状态242.1中指示。随后，协调器290可以向堆栈231发送从管理器242请求堆栈状态242.1的兴趣消息294。应用210可以向协调器290返回指示堆栈状态242.1的内容对象消息295（“堆栈状态消息”）。
图2B图解说明根据本发明的实施例与图2A对应的示例性传输框架270和传输堆栈271。一旦通过堆栈状态消息295接收堆栈状态242.1，协调器290可以通过向应用250发送包括堆栈状态242.1的命令消息296来继续传输，其中，命令消息296包括基于堆栈状态242.1实例化新堆栈的命令。应用250可以实例化传输堆栈270中的传输框架271（通过应用252-256之一，端口260，在一些实施例中通过管理器272），使得堆栈271的每个组件具有如堆栈状态242.1中指示的相同的组件状态232.1-238.1。一旦成功完成堆栈271的实例化，应用250可以向协调器290发送通知消息297，指示堆栈传输的完成。协调器290随后可以向应用210发送通知消息298，指示以下的一个或两者：成功完成传输，和向应用210指示相应的堆栈231可以恢复正常操作。
用于在CCN中传输堆栈状态的示例性方法
图3A呈现一流程图300，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法。操作中，协调实体（“协调器”）向堆栈管理器发送命令消息，该消息指示堆栈准备好传输（“传输命令消息”）（操作302）。堆栈管理器向堆栈的所有组件发送传输命令消息（操作304）。每个堆栈组件接收传输命令消息（操作306），并确定其组件状态（操作308）。每个堆栈组件确定其组件状态是否取决于任何其它堆栈组件的状态（操作310）。如果不是，则堆栈组件存储其组件状态（操作314）。如果是，则在继续操作314之前，堆栈组件等待其它依赖的堆栈组件的就绪状态的指示符（操作312）。每个堆栈组件然后通知堆栈管理器其就绪状态（操作316）。堆栈管理器通知协调器堆栈的就绪状态（操作318），操作如图3B的标记A或图3C的标记B描述的继续。
图3B呈现一流程图330，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法，其中，协调器通过堆栈管理器与堆栈通信。操作中，协调器从堆栈管理器接收通知消息，此消息指示堆栈的就绪状态（操作332）。协调器生成请求堆栈状态的兴趣消息（操作334），并向堆栈管理器发送兴趣消息（操作336）。堆栈管理器向每个堆栈组件发送请求其各自的组件状态的兴趣（操作338）。每个堆栈组件将其组件状态发送到堆栈管理器（操作340）。堆栈管理器接收每个组件的组件状态（操作342），并生成指示堆栈状态的内容对象（操作344）。内容对象还可以指示每个组件的状态。堆栈管理器然后向协调器发送指示堆栈状态的内容对象（操作346）。协调器接收指示堆栈状态的内容对象（操作348）。随后，协调器基于指示堆栈状态的内容对象发起堆栈到另一位置的传输（操作350）。在一些实施例中，传输可以是用于故障转移、负载平衡或其它资源分配目的的复制。
图3C呈现一流程图360，该流程图图解说明根据本发明的实施例用于在内容中心网络中传输堆栈的状态的方法，其中，协调器与另一应用通信。操作中，协调器从堆栈管理器接收通知消息，该消息指示堆栈的就绪状态（操作362）。协调器向另一应用发送通知消息，并包括基于美国专利申请号14/746,490中描述的命名方案的堆栈和其组件的唯一可路由（可到达的）名称（操作364）。另一应用可以是在另一堆栈或另一堆栈的管理器组件上的应用，并且可以驻存在相同或不同装置上。另一应用生成请求堆栈状态的兴趣消息（操作366），并向堆栈管理器发送兴趣消息（操作368）。操作370与关于图3B描述的操作338-344类似；堆栈管理器向每个堆栈组件发送请求其各自的组件状态的兴趣（操作338）；每个堆栈组件向堆栈管理器发送其组件状态（操作340）；堆栈管理器接收每个组件的组件状态（操作342）；并生成指示堆栈状态的内容对象（操作344）。
随后，堆栈管理器向另一应用发送指示堆栈状态的内容对象（操作372）。另一应用接收指示堆栈状态的内容对象（操作374），并基于指示堆栈状态的内容对象发起新堆栈的实例化（操作376）。
堆栈组件的角色
图4呈现一流程图400，该流程图图解说明根据本发明的实施例用于由堆栈组件促进堆栈的传输的方法。操作中，系统通过堆栈的组件从协调实体（“协调器”）接收存储组件的当前状态的命令消息（操作402）。组件可以是用于基于名称处理消息的通信组件，名称可以是包括从最概括级到最具体级排序的连续名称组件的HSVLI。组件确定其当前状态（操作404）。组件然后确定它是否取决于任何其它堆栈组件的状态，以输入就绪状态（判断406）。如果不是，则组件在数据结构中存储其当前状态（操作410）。如果组件取决于任何其它堆栈组件，则组件等待依赖的堆栈组件的就绪状态的指示符。在一些实施例中，依赖的堆栈组件可以基于由依赖的堆栈组件要求的就绪状态或任何其它状态给组件发信号。一旦接收所有依赖堆栈都处于就绪状态的指示符，组件在数据结构中存储其当前状态（操作410）。组件还生成指示当前状态存储于数据结构中的通知消息，并包括数据结构的名称（操作412）。数据结构可以是指示一组内容对象和他们相应的摘要的清单，相应的内容对象可以是数据对象或另一清单。清单（例如安全内容目录）在美国专利申请号14/231,515中描述。
随后，组件可以接收与兴趣消息对应的包，其中，消息指示对数据结构的请求，数据结构指示当前状态（操作414）。组件生成与内容对象消息对应的包，其中，消息包括数据结构（操作416）。
示例性设备和计算机系统
图5图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性设备500。设备500可以包括可以通过有线或无线通信信道彼此通信的多个模块。设备500可以使用一个或多个集成电路实现，可以包括比图5中所示的更多和更少的模块。而且，设备500可以集成到计算机系统中，或者实现为能够与其它计算机系统和/或装置通信的单独的装置。具体地，设备500可以包括通信模块502、状态确定模块504、状态存储模块506、包生成模块508和协调器模块510。
在一些实施例中，通信模块502可以向计算机网络诸如内容中心网络上的其它网络节点发送数据包和/或从其接收数据包，其中，数据包可以对应于：通信组件的命令或通知消息；数据结构的兴趣；以及包括数据结构的内容对象。
状态确定模块504可以确定组件的当前状态，状态存储模块506可以在数据结构中存储组件的当前状态。包生成模块508可以生成与内容对象消息对应的包，其包括数据结构和数据结构的名称。包生成模块508还可以生成指示当前状态存储于数据结构中的通知消息。通信模块502可以响应于接收对当前状态的请求，发送当前状态。状态确定模块504还可以确定堆栈的一个或多个通信组件的当前状态。响应于确定其它组件的当前状态是未决状态，状态确定模块504可以等待其它组件就绪状态的指示符。协调器模块510可以生成堆栈的管理器组件的命令消息，其中，管理器组件用来处理协调器和堆栈的组件之间的消息。协调器模块510还可以生成请求数据结构的兴趣消息。
图6图解说明根据本发明的实施例促进在内容中心网络中传输堆栈的状态的示例性计算机系统。计算机系统602包括处理器604、存储器606和存储装置608。存储器606可以包括充当管理存储器的易失性存储器（例如RAM），并且可以用来存储一个或多个内存池。而且，计算机系统602可以耦连到显示装置610、键盘612和定位装置614。存储装置608可以存储操作系统616、传输系统618和数据632。
传输系统618可以包括指令，这些指令在由计算机系统602执行时，可以使计算机系统602执行本申请中描述的方法和/或过程。具体地，传输系统618可以包括用于向计算机网络诸如内容中心网络上的其它网络节点发送数据包和/或从其接收数据包的指令（通信模块620）。例如，传输系统618可以包括用于通过通信组件从协调实体接收存储组件的当前状态的命令消息的指令，其中，通信组件用在基于名称处理消息中（通信模块620）。传输系统618可以包括用于确定组件的当前状态的指令（状态确定模块622）以及用于在数据结构中存储组件的当前状态的指令（状态存储模块624）。
传输系统618还可以包括用于生成与内容对象消息对应的包的指令，这包括数据结构和数据结构的名称（包生成模块626）。传输系统618可以包括用于生成通知消息的指令，通知消息指示当前状态存储于数据结构中（包生成模块626）。传输系统618还可以包括用于响应于接收对当前状态的请求发送当前状态的指令（通信模块620）。传输系统618可以包括用于确定堆栈的一个或多个其它通信组件的当前状态的指令（状态确定模块622）。传输系统618还可以包括用于响应于确定其它组件的当前状态是未决状态，等待其它组件的就绪状态的指示符的指令（状态确定模块622）。
传输系统618另外可以包括用于生成堆栈的管理器组件的命令消息的指令，其中，管理器组件用于处理协调器和堆栈的组件之间的消息（协调器模块628）。传输系统618还可以包括用于生成请求数据结构的兴趣消息的指令（协调器模块628）。
数据632可以包括通过本申请中描述的方法和/或过程作为输入请求的或作为输出生成的任何数据。具体地，数据632可以存储至少：存储组件的当前状态的命令消息；名称；为包括从最概括级到最具体级排序的连续名称组成的HSVLI的名称；组件的状态；组件的堆栈的状态；表示组件状态的数据结构；表示堆栈状态的数据结构；与兴趣对应的包，其中，兴趣指示对数据结构的请求；传输框架；堆栈；堆栈的一个或多个组件；协调实体；管理器组件；与包括数据结构的内容对象消息对应的包；指示当前状态存储于数据结构中的通知消息；指示组件的状态或堆栈的清单；以及就绪、未决或其它状态的指示符。
在此详细描述中描述的数据结构和代码通常存储于计算机可读存储介质上，计算机可读存储介质可以是可以存储代码和/或数据以由计算机系统使用的任何装置或介质。计算机可读存储介质包括但不限于易失性存储器、非易失性存储器、磁和光存储装置（诸如磁盘驱动器、磁带、CD（光盘）、DVD（数字通用盘或数字视频盘））或能够存储现在已知或以后开发的计算机可读介质的其它介质。
在详细描述部分描述的方法和过程可以体现为代码和/或数据，这些代码和/或数据可以存储在如上文描述的计算机可读存储介质中。当计算机系统读、执行计算机可读存储介质上存储的代码和/或数据时，计算机系统执行体现为数据结构和代码并存储于计算机可读存储介质中的方法和过程。
而且，上面描述的方法和过程可以包括于硬件模块中。例如，硬件模块可以包括但不限于专用集成电路（ASIC）芯片、现场可编程门阵列（FPGA）、现在已知或以后开发的其它可编程逻辑器件。当硬件模块被激活时，他们执行硬件模块中包括的方法和过程。

Claims (10)

1.一种用于转发包的计算机系统，所述系统包括：
处理器；以及
存储指令的存储装置，所述指令在由所述处理器执行时引起所述处理器执行一种方法，所述方法包括：
通过第一通信组件从协调实体接收针对存储所述第一通信组件的当前状态的命令消息，其中，所述第一通信组件用在基于名称处理消息中，并且其中，名称是分层结构可变长度标识符(HSVLI)，其包括从最概括级到最具体级排序的连续名称组件，其中所述第一通信组件是通信模块的堆栈的组件；
确定所述第一通信组件的当前状态；
在所述第一通信组件的当前状态取决于通信模块的所述堆栈的第二通信组件的状态时，在所述第一通信组件处等待所述第二通信组件的就绪状态的指示符；以及
在数据结构中存储所述第一通信组件的当前状态。
2.根据权利要求1所述的计算机系统，其中，所述方法还包括：
接收与兴趣消息对应的第一包，其中，所述兴趣消息指示对所述数据结构的请求，并包括所述数据结构的名称。
3.根据权利要求2所述的计算机系统，其中，所述第一包从以下的一个或多个接收：
通信模块的堆栈的管理器组件，其中，管理器组件用在处理所述协调实体和所述通信模块之间的消息中，其中，堆栈不要求相应的通信模块只与其上或其下的层通信，并且其中，所述通信组件属于所述堆栈；以及
所述协调实体，所述协调实体是以下的一个或多个：
所述堆栈外部的实体或服务；以及
与所述堆栈关联的应用。
4.根据权利要求1所述的计算机系统，其中，所述方法还包括：
生成与内容对象消息对应的第二包，其中，所述内容对象消息包括所述数据结构和所述数据结构的名称。
5.根据权利要求1所述的计算机系统，其中，所述方法还包括：
生成指示所述当前状态存储于所述数据结构中的通知消息，其中，所述通知消息包括所述数据结构的名称。
6.根据权利要求1所述的计算机系统，其中，所述数据结构指示由所述第一通信组件在处理所述消息时存储的一个或多个兴趣或内容对象消息。
7.根据权利要求1所述的计算机系统，其中，所述数据结构是清单，其中，清单指示一组内容对象和其相应摘要，其中，相应的内容对象是数据对象或另一清单，并且其中，清单和内容对象各自指示名称。
8.根据权利要求1所述的计算机系统，其中，所述方法还包括：
响应于接收对当前状态的请求，发送所述当前状态。
9.根据权利要求1所述的计算机系统，其中，所述堆栈不要求相应的通信模块只与其上或其下的层通信。
10.一种计算机实现的方法，包括：
通过第一通信组件从协调实体接收针对存储所述第一通信组件的当前状态的命令消息，其中，所述第一通信组件用在基于名称处理消息中，并且其中，名称是分层结构可变长度标识符(HSVLI)，其包括从最概括级到最具体级排序的连续名称组件，其中所述第一通信组件是通信模块的堆栈的组件；
确定所述第一通信组件的当前状态；在所述第一通信组件的当前状态取决于通信模块的所述堆栈的第二通信组件的状态时，在所述第一通信组件处等待所述第二通信组件的就绪状态的指示符；以及
在数据结构中存储所述第一通信组件的当前状态。
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