JP2871354B2

JP2871354B2 - Application program connection method

Info

Publication number: JP2871354B2
Application number: JP4301034A
Authority: JP
Inventors: 正森
Original assignee: Nippon Electric Co Ltd
Current assignee: NEC Corp
Priority date: 1992-11-11
Filing date: 1992-11-11
Publication date: 1999-03-17
Anticipated expiration: 2014-03-17
Also published as: JPH06152691A

Description

DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は通信アーキテクチャに論
理的な層構造を持つ複数のコンピュータ同士が互いに対
応する各層間である決められたプロトコルを実行するこ
とでエンド・エンドのアプリケーションプログラム間の
通信手段を提供するコンピュータネットワークシステム
におけるアプリケーションプログラム接続方式に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication between end-to-end application programs by allowing a plurality of computers having a logical layer structure in a communication architecture to execute a predetermined protocol between corresponding layers. The present invention relates to an application program connection method in a computer network system that provides means.

【０００２】[0002]

【従来の技術】従来、通信アーキテクチャに論理的な層
構造を持つ複数のコンピュータ同士が互いに対応する各
層間である決められたプロトコルを実行することでエン
ド・エンドのアプリケーションプログラム間の通信手段
を提供するコンピュータネットワークシステムにおける
アプリケーションプログラム接続方式では、通信プロト
コルの実行手段の上位に位置するＡＰ間の接続を行うた
めには、アーキテクチャとして実装する最下位層から最
上位層まで、１つの層間の接続プロトコルを実行し接続
状態とした上で更に１つ上の層の接続プロトコルを実行
して接続状態にしていくといった積上げ処理を繰り返し
行うことで全層間を接続状態とした上で初めてＡＰ間の
接続要求データ送受信を可能としていた。2. Description of the Related Art Conventionally, a plurality of computers having a logical layer structure in a communication architecture execute a predetermined protocol between respective layers corresponding to each other to provide communication means between end-to-end application programs. In an application program connection method in a computer network system, a connection protocol between one layer from the lowest layer to the highest layer implemented as an architecture is required to establish a connection between APs located above the means for executing a communication protocol. The connection request between APs is made for the first time after all the layers are connected by repeatedly performing the stacking process of executing the connection protocol by executing the connection protocol of the next higher layer to make the connection state. Data transmission / reception was enabled.

【０００３】[0003]

【発明が解決しようとする課題】上述した従来のアプリ
ケーションプログラム接続方式では、最上位のＡＰ間の
接続を行うためには多層構造を持つ通信アーキテクチャ
の各層間を下位層から順に接続状態とする積上げ方式を
取らなくてはならないため、各層間を接続状態とするた
めのプロトコルデータが下位層から見れば多数送受信さ
れることになり、その層がデータの送受信毎に課金され
るようなシステムにおいては、その要求が結果的に拒否
されるような場合でも接続プロトコルで送受信される接
続要求プロトコルデータや、接続要求が拒否されること
により一旦接続状態としたものを再び切断状態に移行さ
せるための切断プロトコルデータを送受信することによ
り、無駄に課金されてしまうという運用上の欠点を持
つ。In the above-mentioned conventional application program connection method, in order to establish a connection between the highest-order APs, the layers of a communication architecture having a multilayer structure are sequentially connected from a lower layer to a connected state. Since it is necessary to adopt a method, a large number of protocol data for making the connection between the layers are transmitted and received when viewed from the lower layer, and in a system where the layer is charged each time data is transmitted and received, Even if the request is eventually rejected, the connection request protocol data transmitted / received by the connection protocol or the disconnection for shifting the connection state once the connection request was rejected to the disconnected state again. There is an operational disadvantage in that sending and receiving protocol data results in unnecessary charges.

【０００４】また、接続要求が多数発生するような場合
には、プロトコルデータの送受信がそれに伴い多数回行
われるため回線との間の割り込み回数が多くなり結果的
にホストコンピュータの負荷が増大する欠点を持つ。In addition, when a large number of connection requests occur, transmission and reception of protocol data are performed a number of times, resulting in an increase in the number of interrupts to and from the line, resulting in an increase in the load on the host computer. have.

【０００５】更に、ＡＰからの接続要求受諾を指示され
る前に例えば回線を接続してしまいセキュリティ対策上
問題がある。[0005] Further, before the AP is instructed to accept the connection request, for example, a line is connected, and there is a problem in security measures.

【０００６】本発明の目的は、上述の欠点を除去するよ
うにしたアプリケーションプログラム接続方式を提供す
ることにある。An object of the present invention is to provide an application program connection method which eliminates the above-mentioned disadvantages.

【０００７】[0007]

【課題を解決するための手段】第１の発明は、通信アー
キテクチャに論理的な層構造を持つ複数のコンピュータ
同士が互いに対応する各層間で予め決められたプロトコ
ルを実行することでエンド・エンドのアプリケーション
プログラム間の通信手段を提供するコンピュータネット
ワークシステムにおけるアプリケーションプログラム接
続方式において、＜Ｎ＞層のプロトコルを有し、送信側
では、アプリケーションプログラムからの接続要求を受
け付ける最上位の前記＜Ｎ＞層接続要求受付手段と＜Ｎ
＞層状態を切断状態から接続要求状態とする＜Ｎ＞層状
態管理手段と前記＜Ｎ＞層接続要求受付手段から渡され
た前記アプリケーションプログラムからの接続要求デー
タに＜Ｎ＞層間の接続を行うための＜Ｎ＞層接続要求情
報を付加して＜Ｎ−１＞層に接続要求を行う＜Ｎ＞層接
続要求手段と、前記＜Ｎ＞層接続要求手段からの接続要
求を受け付ける＜Ｎ−１＞層接続要求受付手段と＜Ｎ−
１＞層状態を切断状態から接続要求状態とする＜Ｎ−１
＞層状態管理手段と前記＜Ｎ−１＞層接続要求受付手段
から渡された前記＜Ｎ＞層からの接続要求データに＜Ｎ
−１＞層間の接続を行うための＜Ｎ−１＞層接続要求情
報を付加して＜Ｎ−２＞層に接続要求を行う＜Ｎ−１＞
層接続要求手段と、以降＜２＞層に至るまで前記＜Ｎ＞
層と前記＜Ｎ−１＞層と前記＜Ｎ−２＞層の関係と同様
の関係を有する各層手段と、前記＜２＞層接続要求手段
からの接続要求を受け付ける＜１＞層接続要求受付手段
と＜１＞層状態を切断状態から接続要求状態とする＜１
＞層状態管理手段と前記＜１＞層接続要求受付手段から
渡された前記＜２＞層からの接続要求データに＜１＞層
間の接続を行うための＜１＞層接続要求情報を付加し伝
送路上に前記接続要求データを送信する接続要求データ
送信手段とを有する送信側通信プロトコル実行手段を備
え、受信側では、前記接続要求データを前記伝送路から
受信する最下位の＜１＞層接続要求データ受信手段と前
記接続要求データ内の＜１＞層間の接続要求情報の正当
性を判定する＜１＞層接続要求情報判定手段と前記正当
性ありと判定された場合には＜１＞層状態を切断状態か
ら接続受付状態とする＜１＞層状態管理手段と前記接続
要求データから前記＜１＞層間の接続要求情報を削除し
て上位の＜２＞層に渡す＜１＞層接続要求データ通知手
段と、前記＜１＞層接続要求データ通知手段から渡され
た接続要求データを受信する＜２＞層接続要求データ受
信手段と受信した前記接続要求データ内の＜２＞層間の
接続要求情報の正当性を判定する＜２＞層接続要求情報
判定手段と前記正当性ありと判定された場合には前記＜
２＞層状態を切断状態から接続受付状態とする＜２＞層
状態管理手段と前記＜１＞層から受信した接続要求デー
タから前記＜２＞層間の接続要求情報を削除して上位の
＜３＞層に渡す＜２＞層接続要求データ通知手段と、以
降＜Ｎ−１＞層に至るまで前記＜１＞層と前記＜２＞層
と前記＜３＞層の関係と同様の関係を有する各層手段
と、前記＜Ｎ−１＞層接続要求データ通知手段から渡さ
れた接続要求データを受信する＜Ｎ＞層接続要求データ
受信手段と受信した前記接続要求データ内の＜Ｎ＞層間
の接続要求情報の正当性を判定する＜Ｎ＞層接続要求情
報判定手段と前記正当性ありと判定された場合には前記
＜Ｎ＞層状態を切断状態から接続受付状態とする＜Ｎ＞
層状態管理手段と前記＜Ｎ−１＞層から受信した前記接
続要求データから前記＜Ｎ＞層間の接続要求情報を削除
して前記アプリケーションプログラムに渡す＜Ｎ＞層接
続要求データ通知手段を有する受信側通信プロトコル実
行手段を備えることを特徴とする。According to a first aspect of the present invention, a plurality of computers each having a logical layer structure in a communication architecture execute a predetermined protocol between respective layers corresponding to each other to execute end-to-end communication. In an application program connection system in a computer network system for providing communication means between application programs, a protocol of an <N> layer is provided, and a transmission side receives the connection request from the application program at the highest level of the <N> layer connection. Request receiving means and <N
> Change the layer state from the disconnected state to the connection request state. <N> Layer state management means and the connection request data from the application program passed from the <N> layer connection request reception means to perform connection between the <N> layers. <N> layer connection requesting means for making a connection request to the <N-1> layer by adding <N> layer connection request information for receiving the connection request from the <N> layer connection requesting means <N- 1> Layer connection request receiving means and <N-
1> Change the layer state from the disconnected state to the connection request state <N-1
> The connection request data from the <N> layer passed from the <N-1>
-1> Adds <N-1> layer connection request information for connection between layers and makes a connection request to <N-2> layer <N-1>
Layer connection requesting means;
Layer means having the same relationship as the layer, the <N-1> layer, and the <N-2> layer, and accepting a connection request from the <2> layer connection request means <1> layer connection request acceptance Means and <1> Change layer state from disconnected state to connection request state <1
The <1> layer connection request information for making a connection between <1> layers is added to the connection request data from the <2> layer passed from the> layer state management means and the <1> layer connection request receiving means. Transmission-side communication protocol execution means having connection request data transmission means for transmitting the connection request data on a transmission path, and the receiving side receives the connection request data from the transmission path at the lowest <1> layer connection. The request data receiving means determines the validity of the connection request information between <1> layers in the connection request data. <1> Layer The connection request information determining means determines the validity of the connection request information. The state is changed from the disconnected state to the connection accepting state. <1> Layer state management means and the connection request information between the <1> layers is deleted from the connection request data and passed to the upper <2> layer. Data notification means, and <1> The connection request data passed from the connection request data notifying unit is received. <2> Layer connection request data receiving unit and <2> in the received connection request data, judge validity of connection request information between layers <2>. When the layer connection request information determining means and the validity are determined,
2> The layer state is changed from the disconnected state to the connection accepting state. <2> The layer state management means and the connection request information between the <2> layers are deleted from the connection request data received from the <1> layer, and the upper layer <3> is deleted. And <2> layer connection request data notifying means to be passed to the> layer, and have the same relationship as the relationship between the <1> layer, the <2> layer, and the <3> layer until the <N-1> layer. <N-1> layer connection request data receiving means received from the <N-1> layer connection request data notifying means, and connection between <N> layers in the received connection request data. <N> layer connection request information judging means for judging the validity of the request information, and when the validity is judged, the <N> layer state is changed from the disconnected state to the connection accepting state <N>
A reception having a layer state management means and a <N> layer connection request data notifying means for deleting connection request information between the <N> layers from the connection request data received from the <N-1> layer and passing the information to the application program. It is characterized by comprising side communication protocol executing means.

【０００８】また、第２の発明は、前記受信側通信プロ
トコル実行手段が、前記アプリケーションプログラムか
らの接続受諾応答を受け付ける最上位の＜Ｎ＞層接続受
諾応答受付手段と前記＜Ｎ＞層状態を接続受付状態から
接続状態とする＜Ｎ＞層状態管理手段と前記＜Ｎ＞層接
続受諾応答受付手段から渡された前記アプリケーション
プログラムからの接続受諾応答データに前記＜Ｎ＞層間
の接続受諾を行うための＜Ｎ＞層接続受諾応答情報を付
加する＜Ｎ＞層接続受諾応答手段と、前記＜Ｎ＞層接続
受諾応答手段からの接続受諾応答を受け付ける＜Ｎ−１
＞層接続受諾応答受付手段と前記＜Ｎ＞層状態を接続受
付状態から接続状態とする＜Ｎ−１＞層状態管理手段と
前記＜Ｎ−１＞層接続受諾応答受付手段から渡された前
記＜Ｎ＞層からの接続受諾応答データに前記＜Ｎ＞層間
の接続受諾を行うための＜Ｎ＞層接続受諾応答情報を付
加する＜Ｎ−１＞層接続受諾応答手段と、以降＜２＞層
に至るまで前記＜Ｎ＞層と前記＜Ｎ−１＞層と前記＜Ｎ
−２＞層の関係と同様の関係を有する各層手段と、前記
＜２＞層接続受諾応答手段からの接続受諾応答を受け付
ける＜１＞層接続受諾応答受付手段と前記＜１＞層状態
を接続受付状態から接続状態とする＜１＞層状態管理手
段と前記＜１＞層接続受諾応答受付手段から渡された前
記＜２＞層からの接続受諾応答データに前記＜１＞層間
の接続受諾を行うための＜１＞層接続受諾応答情報を付
加し付加された前記接続受諾応答データを前記伝送路上
に送信する接続受諾応答データ送信手段とを有し、前記
送信側通信プロトコル実行手段が、前記接続受諾応答デ
ータを前記伝送路から受信する最下位の＜１＞層接続受
諾応答データ受信手段と前記＜１＞層状態を接続要求状
態から接続状態とする＜１＞層状態管理手段と前記伝送
路から受信した前記接続受諾応答データから前記＜１＞
層間の接続受諾応答情報を削除して上位の＜２＞層に渡
す＜１＞層接続受諾応答データ通知手段と、前記＜１＞
層接続受諾応答データ通知手段から渡された前記接続受
諾応答データを受信する＜２＞層接続受諾応答データ受
信手段と前記＜２＞層状態を接続要求状態から接続状態
とする＜２＞層状態管理手段と前記＜１＞層から受信し
た接続受諾応答データから前記＜２＞層間の接続受諾応
答情報を削除して上位の＜３＞層に渡す＜２＞層接続受
諾応答データ通知手段と、以降＜Ｎ−１＞層に至るまで
前記＜１＞層と前記＜２＞層と前記＜３＞層の関係と同
様の関係を有する各層手段と、前記＜Ｎ−１＞層接続受
諾応答データ通知手段から渡された接続受諾応答データ
を受信する＜Ｎ＞層接続受諾応答データ受信手段と前記
＜Ｎ＞層状態を接続要求状態から接続状態とする＜Ｎ＞
層状態管理手段と前記＜Ｎ−１＞層から受信した前記接
続受諾応答データから前記＜Ｎ＞層間の接続受諾応答情
報を削除して前記アプリケーションプログラムに渡す＜
Ｎ＞層接続受諾応答データ通知手段とを有することを特
徴とする。In a second aspect of the present invention, the receiving-side communication protocol executing means includes a highest-order <N> -layer connection acceptance response accepting means for accepting a connection acceptance response from the application program and the <N> layer state. The connection between the <N> layers is accepted based on the connection acceptance response data from the <N> layer state management means and the application program passed from the <N> layer connection acceptance response acceptance means, which is changed from the connection acceptance state to the connection state. <N> layer connection acceptance response means for adding <N> layer connection acceptance response information, and accepting a connection acceptance response from the <N> layer connection acceptance response means <N-1>
> The layer connection acceptance response accepting means, the <N> layer state is changed from the connection accepting state to the connection state, and the <N-1> layer state managing means and the <N-1> layer connection acceptance response accepting means are passed from the <N-1> layer connection acceptance response accepting means. <N-1> layer connection acceptance response means for adding <N> layer connection acceptance response information for accepting the connection between the <N> layers to the connection acceptance response data from the <N>layer; The <N> layer, the <N-1> layer, and the <N
-2> connecting each layer means having the same relation as the layer relation, <2> receiving a connection acceptance response from the layer connection acceptance response means <1> layer connection acceptance response receiving means and the <1> layer state The connection acceptance between the <1> layer is accepted based on the connection acceptance response data from the <2> layer passed from the <1> layer state management means and the <1> layer connection acceptance response accepting means, which is changed from the acceptance state to the connection state. And <1> connection acceptance response data transmitting means for adding the layer connection acceptance response information and transmitting the added connection acceptance response data on the transmission path. <1> layer connection acceptance response data receiving means for receiving connection acceptance response data from the transmission path, and <1> layer state management means for changing the <1> layer state from the connection request state to the connection state, and the transmission Before receiving from the road Wherein the connection acceptance response data <1>
<1> layer connection acceptance response data notifying means for deleting connection acceptance response information between layers and passing the information to a higher layer <2>;
<2> layer connection acceptance response data receiving means for receiving the connection acceptance response data passed from the layer connection acceptance response data notifying means, and changing the <2> layer state from the connection request state to the connection state <2> layer state Management means, and <2> layer connection acceptance response data notifying means for deleting connection acceptance response information between the <2> layers from the connection acceptance response data received from the <1> layer and passing it to the higher <3> layer. Thereafter, each layer means having the same relationship as the relationship between the <1> layer, the <2> layer, and the <3> layer up to the <N-1> layer, and the <N-1> layer connection acceptance response data <N> layer connection acceptance response data receiving means for receiving the connection acceptance response data passed from the notifying means, and changing the <N> layer state from the connection request state to the connection state <N>
The connection acceptance response information between the <N> layers is deleted from the connection acceptance response data received from the layer status management means and the <N-1> layer and passed to the application program <
N> layer connection acceptance response data notifying means.

【０００９】さらに、第３の発明は、前記受信側通信プ
ロトコル実行手段が、前記アプリケーションプログラム
からの接続拒否応答を受け付ける前記＜Ｎ＞層接続拒否
応答受付手段と前記＜Ｎ＞層状態を接続受付状態から切
断状態に戻す＜Ｎ＞層状態管理手段と前記＜Ｎ＞層接続
拒否応答受付手段から渡された前記アプリケーションプ
ログラムからの接続拒否応答データに前記＜Ｎ＞層間の
接続拒否を行うための＜Ｎ＞層接続拒否応答情報を付加
して＜Ｎ−１＞層に接続拒否応答を行う＜Ｎ＞層接続拒
否応答手段と、前記＜Ｎ＞層接続拒否応答手段からの接
続拒否応答を受け付ける＜Ｎ−１＞層接続拒否応答受付
手段と、前記＜Ｎ−１＞層状態を接続受付状態から切断
状態に戻す＜Ｎ−１＞層状態管理手段と前記＜Ｎ−１＞
層接続拒否応答受付手段から渡された前記＜Ｎ＞層から
の接続拒否応答データに前記＜Ｎ−１＞層間の接続拒否
を行うための＜Ｎ−１＞層接続拒否応答情報を付加して
＜Ｎ−２＞層に接続拒否応答を行う＜Ｎ−１＞層接続拒
否応答手段と、以降＜２＞層に至るまで前記＜Ｎ＞層と
前記＜Ｎ−１＞層と前記＜Ｎ−２＞層の関係と同様の関
係を有する各層手段と、前記＜２＞層接続拒否応答手段
からの接続拒否応答を受け付ける＜１＞層接続拒否応答
受付手段と、前記＜１＞層状態を接続受付状態から切断
状態に戻す＜１＞層状態管理手段と前記＜１＞層接続拒
否応答受付手段から渡された前記＜２＞層からの接続拒
否応答データに前記＜１＞層間の接続拒否を行うための
＜１＞層接続拒否応答情報を付加し前記伝送路上に前記
付加された接続拒否応答データを送信する接続拒否応答
データ送信手段とを有し、前記送信側通信プロトコル実
行手段が、前記接続拒否応答データを前記伝送路から受
信する最下位の＜１＞層接続拒否応答データ受信手段と
前記＜１＞層状態を接続要求状態から切断状態に戻す＜
１＞層状態管理手段と前記伝送路から受信した接続拒否
応答データから前記＜１＞層間の接続拒否応答情報を削
除して上位の＜２＞層に渡す＜１＞層接続拒否応答デー
タ通知手段と、前記＜１＞層接続拒否応答データ通知手
段から渡された接続拒否応答データを受信する＜２＞層
接続拒否応答データ受信手段と前記＜２＞層状態を接続
要求状態から切断状態に戻す＜２＞層状態管理手段と前
記＜１＞層から受信した接続拒否応答データから前記＜
２＞層間の接続拒否応答情報を削除して上位の＜３＞層
に渡す＜２＞層接続拒否応答データ通知手段と、以降＜
Ｎ−１＞層に至るまで前記＜１＞層と前記＜２＞層と前
記＜３＞層の関係と同様の関係を有する各層手段と、前
記＜Ｎ−１＞層接続拒否応答データ通知手段から渡され
た接続拒否応答データを受信する＜Ｎ＞層接続拒否応答
データ受信手段と前記＜Ｎ＞層状態を接続要求状態から
切断状態に戻す＜Ｎ＞層状態管理手段と前記＜Ｎ−１＞
層から受信した接続拒否応答データから前記＜Ｎ＞層間
の接続拒否応答情報を削除して削除された前記接続拒否
応答情報を前記アプリケーションプログラムに渡す＜Ｎ
＞層接続拒否応答データ通知手段とを有することを特徴
とする。In a third aspect of the present invention, the receiving-side communication protocol executing means receives the connection rejection response from the application program, and receives the <N> layer connection rejection response receiving means and the <N> layer state connection. A connection rejection response data from the application program passed from the <N> layer state management means and the <N> layer connection rejection response receiving means for returning the state from the disconnected state to the disconnected state; <N> layer connection rejection response information is added, and a connection rejection response is sent to the <N-1> layer. <N> layer connection rejection response means, and connection rejection response from the <N> layer connection rejection response means is received. <N-1> layer connection rejection response receiving means, and the <N-1> layer state is returned from the connection receiving state to the disconnected state. <N-1> layer state management means and the <N-1>.
<N-1> layer connection rejection response information for rejecting connection between the <N-1> layers is added to the connection rejection response data from the <N> layer passed from the layer connection rejection response receiving means. <N-1> layer connection rejection response means for performing a connection rejection response to the <N-2> layer, and the <N> layer, the <N-1> layer, and the <N- layer 2> connecting each layer means having the same relationship as the layer relation, <2> layer connection rejection response receiving means for receiving a connection rejection response from the <2> layer connection rejection response means, and connecting the <1> layer state The connection state rejection from the <1> layer is returned to the connection rejection response data from the <2> layer passed from the <1> layer state management means and the <1> layer connection rejection response reception means to return from the reception state to the disconnected state. <1> layer connection rejection response information to perform the connection rejection on the transmission path. Connection rejection response data transmitting means for transmitting response data, wherein the transmission-side communication protocol executing means receives the connection rejection response data from the transmission line at the lowest level <1> layer connection rejection response data receiving means And returning the <1> layer state from the connection request state to the disconnected state <
1> layer state management means and connection rejection response information between the <1> layers is deleted from the connection rejection response data received from the transmission path and passed to the upper <2> layer. Receiving the connection rejection response data passed from the <1> layer connection rejection response data notification means, <2> the layer connection rejection response data receiving means, and returning the <2> layer state from the connection request state to the disconnected state. <2> From the layer state management means and the connection rejection response data received from the <1> layer, the <
<2> layer connection rejection response data notification means for deleting the connection rejection response information between layers and passing it to the upper <3>layer;
Each layer unit having the same relationship as the <1> layer, the <2> layer, and the <3> layer up to the N-1> layer, and the <N-1> layer connection rejection response data notification unit Receiving the connection rejection response data passed from <N> layer connection rejection response data receiving means, returning the <N> layer state from the connection request state to the disconnected state, <N> layer state management means, and the <N-1>>
The connection rejection response information between the <N> layers is deleted from the connection rejection response data received from the layer, and the deleted connection rejection response information is passed to the application program.
> Layer connection rejection response data notifying means.

【００１０】第４の発明は、前記受信側通信プロトコル
実行手段が、前記＜Ｎ＞層接続要求情報判定手段で前記
接続要求データ内の＜Ｎ＞層間の接続要求情報が不正で
あると判定した場合には前記接続要求データ内の＜Ｎ＞
層接続要求情報を接続拒否情報に置換し接続拒否データ
として＜Ｎ−１＞層に渡す＜Ｎ＞層接続拒否データ送信
手段と、前記＜Ｎ＞層接続拒否データ送信手段から前記
接続拒否データを受け付ける＜Ｎ−１＞層接続拒否デー
タ受付手段と＜Ｎ−１＞層状態を接続受付状態から切断
状態に戻す＜Ｎ−１＞層状態管理手段と前記＜Ｎ−１＞
層接続要求情報判定手段で前記接続要求データ内の＜Ｎ
−１＞層間の接続要求情報が不正であると判定した場合
には前記＜Ｎ−１＞層接続拒否データ受付手段から受け
た接続拒否データに前記＜Ｎ−１＞層間の接続拒否応答
情報を付加して下位の前記＜Ｎ−２＞層に送信する＜Ｎ
−１＞層接続拒否データ送信手段と、以降＜２＞層に至
るまで前記＜Ｎ−１＞層と同様の処理を行う各層手段
と、前記＜２＞層接続拒否データ送信手段から前記接続
拒否データを受け付ける＜１＞層接続拒否データ受付手
段と＜１＞層状態を接続受付状態から切断状態に戻す＜
１＞層状態管理手段と前記＜１＞層接続要求情報判定手
段で前記接続要求データ内の＜１＞層間の接続要求情報
が不正であると判定した場合には前記＜１＞層接続拒否
データ受付手段から受けた接続拒否データに前記＜１＞
層間の接続拒否応答情報を付加して前記伝送路に送信す
る＜１＞層接続拒否データ送信手段とを備え、前記送信
側通信プロトコル実行手段が、前記接続拒否データを前
記伝送路から受信する最下位の＜１＞層接続拒否データ
受信手段と前記＜１＞層状態を接続要求状態から切断状
態に戻す＜１＞層状態管理手段と前記伝送路から受信し
た接続拒否データから前記＜１＞層間の接続拒否情報を
削除して上位の＜２＞層に渡す＜１＞層接続拒否データ
通知手段と、前記＜１＞層接続拒否データ通知手段から
渡された接続拒否データを受信する＜２＞層接続拒否デ
ータ受信手段と前記＜２＞層状態を接続要求状態から切
断状態に戻す＜２＞層状態管理手段と前記＜１＞層から
受信した接続拒否データから前記＜２＞層間の接続拒否
情報または前記＜２＞層が付加した送信要求情報を削除
して上位の＜３＞層に渡す＜２＞層接続拒否データ通知
手段と、以降＜Ｎ−１＞層まで前記＜２＞層と同様の処
理を行う各層手段と、前記＜Ｎ−１＞層接続拒否データ
通知手段から渡された接続拒否データを受信する＜Ｎ＞
層接続拒否データ受信手段と前記＜Ｎ＞層状態を接続要
求状態から切断状態に戻す＜Ｎ＞層状態管理手段と前記
＜Ｎ−１＞層から受信した接続拒否データから前記＜Ｎ
＞層間の接続拒否情報あるいは前記＜Ｎ＞層が付加した
送信要求情報を削除して前記アプリケーションプログラ
ムに渡す＜Ｎ＞層接続拒否データ通知手段とを備えるこ
とを特徴とする。In a fourth aspect, the receiving-side communication protocol executing means determines that the connection request information between the <N> layers in the connection request data is invalid by the <N> layer connection request information determining means. In this case, <N> in the connection request data
The <N> layer connection rejection data transmitting means, which replaces the layer connection request information with the connection rejection information and passes it to the <N-1> layer as connection rejection data, and transmits the connection rejection data from the <N> layer connection rejection data transmitting means. The received <N-1> layer connection rejection data receiving means, the <N-1> layer state is returned from the connection accepted state to the disconnected state, and the <N-1> layer state management means and the <N-1>.
<N> in the connection request data by the layer connection request information determination means.
-1> When it is determined that the connection request information between the layers is invalid, the connection rejection response information between the <N-1> layers is added to the connection rejection data received from the <N-1> layer connection rejection data receiving means. <N-2>
-1> layer connection rejection data transmission means, each layer means for performing the same processing as the <N-1> layer up to the <2> layer, and the connection rejection from the <2> layer connection rejection data transmission means <1> Layer connection rejection data receiving means for receiving data and <1> Layer state is returned from connection receiving state to disconnected state <
When the <1> layer connection request information in the <1> layer in the connection request data is invalid by the <1> layer state management means and the <1> layer connection request information determination means, the <1> layer connection rejection data is determined. In the connection rejection data received from the receiving unit, <1>
<1> layer connection rejection data transmitting means for adding connection rejection response information between layers and transmitting the connection rejection data to the transmission path, wherein the transmission-side communication protocol execution means receives the connection rejection data from the transmission path. The lower <1> layer connection rejection data receiving means, the <1> layer state is returned from the connection request state to the disconnected state, the <1> layer state management means, and the <1> layer is obtained from the connection rejection data received from the transmission line. <1> layer connection rejection data notifying means that deletes the connection rejection information and passes it to the upper layer <2>, and receives the connection rejection data passed from the <1> layer connection rejection data notifying means <2> The layer connection rejection data receiving means, the <2> layer state is returned from the connection request state to the disconnected state, the <2> layer state management means, and the connection rejection data received from the <1> layer is rejected between the <2> layers. Information or the above <> The transmission request information added by the layer is deleted and passed to the higher-order <3> layer. <2> Layer connection rejection data notification means, and the same processing as the above-mentioned <2> layer is performed up to the <N-1> layer. Receiving the connection refusal data passed from each layer means and the <N-1> layer connection rejection data notification means <N>
The layer connection rejection data receiving means, the <N> layer state is returned from the connection request state to the disconnected state, the <N> layer state management means, and the connection rejection data received from the <N-1> layer.
<N> layer connection rejection data notifying means which deletes connection rejection information between layers or transmission request information added by the <N> layer and passes it to the application program.

【００１１】[0011]

【実施例】次に、本発明の実施例について図面を参照し
て説明する。Next, embodiments of the present invention will be described with reference to the drawings.

【００１２】図１と図２は本発明の構成図であり、発明
を判り易くするために、接続要求発行側を図１に、接続
要求受信側を図２とし、かつプロトコル階層を３として
いる。FIGS. 1 and 2 are block diagrams of the present invention. In order to make the invention easy to understand, FIG. 1 shows a connection request issuing side, FIG. 2 shows a connection request receiving side, and 3 shows a protocol hierarchy. .

【００１３】本発明の一実施例は、ホストコンピュータ
５６上で動作するアプリケーションプログラム（以下Ａ
Ｐと略す）５５、ＡＰ間の接続を管理実行する通信プロ
トコル実行手段１、複数のホストコンピュータ間を物理
的に接続する網５７から構成されている。In one embodiment of the present invention, an application program (hereinafter referred to as A
P) 55, a communication protocol executing means 1 for managing and executing a connection between APs, and a network 57 for physically connecting a plurality of host computers.

【００１４】通信プロトコル実行手段１は送信要求発行
側においては、＜３＞層接続要求受付手段２、＜３＞層
接続要求手段３、＜３＞層状態管理手段４、＜２＞層接
続要求受付手段５、＜２＞層接続要求手段６、＜２＞層
状態管理手段７、＜１＞層接続要求受付手段８、接続要
求データ送信手段９、＜１＞層状態管理手段１０、＜１
＞層接続受諾応答データ受信手段２６、＜１＞層接続受
諾応答データ通知手段２７、＜２＞層接続受諾応答デー
タ受信手段２８、＜２＞層接続受諾応答データ通知手段
２９、＜３＞層接続受諾応答データ受信手段３０、＜３
＞層接続受諾応答データ通知手段３１、＜１＞層接続拒
否応答データ受信手段３８、＜１＞層接続拒否応答デー
タ通知手段３９、＜２＞層接続拒否応答データ受信手段
４０、＜２＞層接続拒否応答データ通知手段４１、＜３
＞層接続拒否応答データ受信手段４２、＜３＞層接続拒
否応答データ通知手段４３、＜１＞層接続拒否データ受
信手段４９、＜１＞層接続拒否データ通知手段５０、＜
２＞層接続拒否データ受信手段５１、＜２＞層接続拒否
データ通知手段５２、＜３＞層接続拒否データ受信手段
５３、＜３＞層接続拒否データ通知手段５４から構成さ
れている。On the transmission request issuing side, the communication protocol executing means 1 includes <3> layer connection request receiving means 2, <3> layer connection requesting means 3, <3> layer state management means 4, and <2> layer connection request. Receiving means 5, <2> layer connection requesting means 6, <2> layer state managing means 7, <1> layer connection request receiving means 8, connection request data transmitting means 9, <1> layer state managing means 10, <1>
> Layer connection acceptance response data receiving means 26, <1> layer connection acceptance response data notifying means 27, <2> layer connection acceptance response data receiving means 28, <2> layer connection acceptance response data notifying means 29, <3> layer Connection acceptance response data receiving means 30, <3
> Layer connection acceptance response data notifying means 31, <1> layer connection rejection response data receiving means 38, <1> layer connection rejection response data notifying means 39, <2> layer connection rejection response data receiving means 40, <2> layer Connection rejection response data notification means 41, <3
> Layer connection rejection response data receiving means 42, <3> layer connection rejection response data notifying means 43, <1> layer connection rejection data receiving means 49, <1> layer connection rejection data notifying means 50, <
2> layer connection rejection data receiving means 51; <2> layer connection rejection data notifying means 52; <3> layer connection rejection data receiving means 53; and <3> layer connection rejection data notifying means 54.

【００１５】一方接続要求受信側での通信プロトコル実
行手段１は＜１＞層接続要求データ受信手段１１、＜１
＞層接続要求情報判定手段１２、＜１＞層接続要求デー
タ通知手段１３、＜１＞層状態管理手段１０、＜２＞層
接続要求データ受信手段１４、＜２＞層接続要求情報判
定手段１５、＜２＞層接続要求データ通知手段１６、＜
２＞層状態管理手段７、＜３＞層接続要求データ受信手
段１７、＜３＞層接続要求情報判定手段１８、＜３＞層
接続要求データ通知手段１９、＜３＞層状態管理手段
４、＜３＞層接続受諾応答受付手段２０、＜３＞層接続
受諾応答手段２１、＜２＞層接続受諾応答受付手段２
２、＜２＞層接続受諾応答手段２３、＜１＞層接続受諾
応答受付手段２４、接続受諾応答データ送信手段２５、
＜３＞層接続拒否応答受付手段３２、＜３＞層接続拒否
応答手段３３、＜２＞層接続拒否応答受付手段３４、＜
２＞層接続拒否応答手段３５、＜１＞層接続拒否応答受
付手段３６、接続拒否応答データ送信手段３７、＜１＞
層接続拒否データ送信手段４４、＜１＞層接続拒否デー
タ受付手段４５、＜２＞層接続拒否データ送信手段４
６、＜２＞層接続拒否データ受付手段４７、＜３＞層接
続拒否データ送信手段４８から構成されている。On the other hand, the communication protocol executing means 1 on the connection request receiving side includes the <1> layer connection request data receiving means 11, <1
> Layer connection request information determining means 12, <1> layer connection request data notifying means 13, <1> layer state managing means 10, <2> layer connection request data receiving means 14, <2> layer connection request information determining means 15 , <2> layer connection request data notifying means 16, <
2> layer state management means 7, <3> layer connection request data receiving means 17, <3> layer connection request information determination means 18, <3> layer connection request data notification means 19, <3> layer state management means 4, <3> Layer connection acceptance response accepting means 20, <3> Layer connection acceptance response means 21, <2> Layer connection acceptance response accepting means 2
2, <2> layer connection acceptance response means 23, <1> layer connection acceptance response reception means 24, connection acceptance response data transmission means 25,
<3> layer connection rejection response receiving means 32, <3> layer connection rejection response means 33, <2> layer connection rejection response receiving means 34, <
2> layer connection rejection response means 35, <1> layer connection rejection response receiving means 36, connection rejection response data transmission means 37, <1>
Layer connection rejection data transmitting means 44, <1> layer connection rejection data receiving means 45, <2> layer connection rejection data transmitting means 4
6, <2> layer connection rejection data receiving means 47, and <3> layer connection rejection data transmitting means 48.

【００１６】次に本発明の動作を図１から図２２を参照
しながら説明する。Next, the operation of the present invention will be described with reference to FIGS.

【００１７】図３のステップ２１を参照すると、＜３＞
層接続要求受付手段２、＜２＞層接続要求受付手段５、
＜１＞層接続要求受付手段８は自層より１つ上位層から
のＡＰ接続要求を受け付けて接続要求手段に制御を渡
す。Referring to step 21 of FIG. 3, <3>
Layer connection request receiving means 2, <2> layer connection request receiving means 5,
<1> The layer connection request accepting means 8 accepts an AP connection request from the layer immediately above it, and transfers control to the connection requesting means.

【００１８】図４を参照すると、＜３＞層接続要求手段
３、＜２＞層接続要求手段６、接続要求データ送信手段
９は自層の層管理状態を切断状態から接続要求状態に更
新するため、入力パラメータに”接続要求”を設定して
＜３＞層状態管理手段４、＜２＞層状態管理手段７、＜
１＞層状態管理手段１０を呼び出し（ステップ３１）、
上位からの接続要求データの前に後述する自層のプロト
コルヘッダ１９１（図２０参照）、１９２あるいは１９
３を付加して下位層に送信要求を行う（ステップ３
２）。Referring to FIG. 4, <3> layer connection request means 3, <2> layer connection request means 6, and connection request data transmission means 9 update the layer management state of the own layer from the disconnected state to the connection request state. Therefore, "connection request" is set as an input parameter, and <3> layer state management means 4, <2> layer state management means 7, <
1> Call the layer state management means 10 (step 31),
Before the connection request data from the upper layer, a protocol header 191 (refer to FIG. 20) of its own layer, described later, 192 or 19
3 is transmitted to the lower layer (step 3
2).

【００１９】最下位層である＜１＞層の場合には結果的
に作成されたＡＰ接続要求データを回線に送出する。In the case of the <1> layer, which is the lowest layer, the resulting AP connection request data is transmitted to the line.

【００２０】図５を参照すると、＜１＞層接続受諾応答
データ受信手段２６、＜２＞層接続受諾応答データ受信
手段２８、＜３＞層接続受諾応答データ受信手段３０は
下位層（最下位層の＜１＞層の場合には回線上）から接
続受諾応答データを受信し（ステップ４１）、自層の層
管理状態を接続要求状態から接続状態に更新するため、
入力パラメータに”接続”を設定して＜３＞層状態管理
手段４、＜２＞層状態管理手段７、＜１＞層状態管理手
段１０を呼び出した上で該データを通知手段に渡して処
理を終える（ステップ４２）。Referring to FIG. 5, <1> layer connection acceptance response data receiving means 26, <2> layer connection acceptance response data receiving means 28, and <3> layer connection acceptance response data receiving means 30 In order to update the layer management state of the own layer from the connection request state to the connection state, the connection acceptance response data is received from the layer <1> layer (on the line) (step 41).
"Connection" is set as an input parameter, and <3> layer state management means 4, <2> layer state management means 7, and <1> layer state management means 10 are called, and the data is passed to the notification means for processing. Is completed (step 42).

【００２１】図６のステップ５１を参照すると、＜１＞
層接続受諾応答データ通知手段２７、＜２＞層接続受諾
応答データ通知手段２９、＜３＞層接続受諾応答データ
通知手段３１は受信手段から渡された接続受諾応答デー
タから自層のプロトコルヘッダ１９１、１９２あるいは
１９３を削除した上で上位にデータを渡す（５１）。Referring to step 51 of FIG. 6, <1>
The layer connection acceptance response data notifying unit 27, the <2> layer connection acceptance response data notifying unit 29, and the <3> layer connection acceptance response data notifying unit 31 determine the protocol header 191 of the own layer from the connection acceptance response data passed from the receiving unit. , 192 or 193 are deleted, and the data is transferred to the higher order (51).

【００２２】図７を参照すると、＜１＞層接続拒否応答
データ受信手段３８、＜２＞層接続拒否応答データ受信
手段４０、＜３＞層接続拒否応答データ受信手段４２は
下位層（最下位層の＜１＞層の場合には回線上）から接
続拒否応答データを受信し（ステップ６１）、自層の層
管理状態を接続要求状態から切断状態に更新するため、
入力パラメータに”切断”を設定して＜３＞層状態管理
手段４、＜２＞層状態管理手段７、＜１＞層状態管理手
段１０を呼び出した上で該データを通知手段に渡して処
理を終える（ステップ６２）。Referring to FIG. 7, <1> layer connection rejection response data receiving means 38, <2> layer connection rejection response data receiving means 40, and <3> layer connection rejection response data receiving means 42 In order to update the layer management state of the own layer from the connection request state to the disconnected state, the connection rejection response data is received from the layer <1> layer (on the line) (step 61).
After setting "disconnect" as an input parameter, the <3> layer state management means 4, <2> layer state management means 7, and <1> layer state management means 10 are called, and the data is passed to the notification means for processing. Is completed (step 62).

【００２３】図８のステップ７１を参照すると、＜１＞
層接続拒否応答データ通知手段３９、＜２＞層接続拒否
応答データ通知手段４１、＜３＞層接続拒否応答データ
通知手段４３は受信手段から渡された接続拒否応答デー
タから自層のプロトコルヘッダ１９１、１９２あるいは
１９３を削除した上で上位にデータを渡す。Referring to step 71 in FIG. 8, <1>
The layer connection rejection response data notifying unit 39, the <2> layer connection rejection response data notifying unit 41, and the <3> layer connection rejection response data notifying unit 43 determine the protocol header 191 of the own layer from the connection rejection response data passed from the receiving unit. , 192 or 193 are deleted, and the data is transferred to the higher order.

【００２４】図９を参照すると、＜１＞層接続拒否デー
タ受信手段４９、＜２＞層接続拒否データ受信手段５
１、＜３＞層接続拒否データ受信手段５３は下位層（最
下位層の＜１＞層の場合には回線上）から接続拒否デー
タを受信し（ステップ８１）、自層の層管理状態を接続
要求状態から切断状態に更新するため、入力パラメータ
に”切断”を設定して＜３＞層状態管理手段４、＜２＞
層状態管理手段７、＜１＞層状態管理手段１０を呼び出
した上で該データを通知手段に渡して処理を終える（ス
テップ８２）。Referring to FIG. 9, <1> layer connection rejection data receiving means 49, <2> layer connection rejection data receiving means 5
1, <3> layer connection rejection data receiving means 53 receives connection rejection data from the lower layer (on the line in the case of the lowermost <1> layer) (step 81) and changes the layer management state of its own layer. In order to update from the connection request state to the disconnected state, "disconnected" is set in the input parameter and <3> layer state management means 4, <2>
After calling the layer state management means 7 and the <1> layer state management means 10, the data is passed to the notification means and the processing is terminated (step 82).

【００２５】図１０のステップ９１を参照すると、＜１
＞層接続拒否データ通知手段５０、＜２＞層接続拒否デ
ータ通知手段５２、＜３＞層接続拒否データ通知手段５
４は受信手段から渡された接続拒否データから自層のプ
ロトコルヘッダ１９１、１９２あるいは１９３を削除し
た上で上位にデータを渡す。Referring to step 91 of FIG.
> Layer connection rejection data notification means 50, <2> layer connection rejection data notification means 52, <3> layer connection rejection data notification means 5
No. 4 deletes the protocol header 191, 192 or 193 of the own layer from the connection rejection data passed from the receiving means and passes the data to a higher order.

【００２６】図１１を参照すると、＜１＞層接続要求デ
ータ受信手段１１、＜２＞層接続要求データ受信手段１
４、＜３＞層接続要求データ受信手段１７は下位層（最
下位層の＜１＞層の場合には回線上）からＡＰ接続要求
データを受信し、その自層に関連するプロトコルヘッダ
１９１、１９２あるいは１９３の正当性および接続要求
を受け付けられる状態か否かを判定するため＜１＞層接
続要求情報判定手段１２、＜２＞層接続要求情報判定手
段１５、＜３＞層接続要求情報判定手段１８を呼び出し
（ステップ１０１）、結果を判定し（ステップ１０
２）、判定が”受諾”であれば自層の層管理状態を切断
状態から接続受付状態に更新するため、入力パラメータ
に”接続受付”を設定して＜３＞層状態管理手段４、＜
２＞層状態管理手段７、＜１＞層状態管理手段１０を呼
び出し通知手段にデータを渡して処理を終える（ステッ
プ１０３）。一方結果判定（ステップ１０２）で判定
が”拒否（異常あるいは資源）”の場合には＜１＞層接
続拒否データ送信手段４４、＜２＞層接続拒否データ送
信手段４６、＜３＞層接続拒否データ送信手段４８に制
御を渡すこととなり、各拒否データ送信手段は接続要求
データ内の自層関連プロトコルヘッダ１９１、１９２あ
るいは１９３の後述するコマンド２１２（図２２）を拒
否情報に変換した上で下位層に当該データの送信要求を
行う（ステップ１０４）。あるいは受付処理から制御を
渡された場合（上位層で接続要求情報不正と判定された
場合）には自層の層管理状態を接続受付状態から切断状
態に戻すため、入力パラメータに”切断”を設定して＜
３＞層状態管理手段４、＜２＞層状態管理手段７、＜１
＞層状態管理手段１０を呼び出し（ステップ１０５）、
上位から渡された接続拒否データにコマンドを接続拒否
としたプロトコルヘッダ１９１、１９２あるいは１９３
を付加して下位層に送信要求を行う（ステップ１０
６）。この時、判定層および送信手段が最下位層の場合
には回線上に拒否データを送出する。Referring to FIG. 11, <1> layer connection request data receiving means 11, <2> layer connection request data receiving means 1
4. The <3> layer connection request data receiving means 17 receives the AP connection request data from the lower layer (on the line in the case of the lowest layer <1> layer), and receives the protocol header 191 related to its own layer. <1> Layer connection request information determination unit 12, <2> Layer connection request information determination unit 15, and <3> Layer connection request information determination in order to determine the validity of 192 or 193 and whether or not the connection request can be accepted. The means 18 is called (step 101), and the result is determined (step 10).
2) If the determination is "acceptance", to update the layer management state of the own layer from the disconnected state to the connection acceptance state, set "input acceptance" as an input parameter and <3> layer state management means 4, <
2> The layer state management means 7 and <1> the layer state management means 10 are called to pass the data to the notification means, and the processing is terminated (step 103). On the other hand, if the result of determination (step 102) is "refused (abnormal or resource)", <1> layer connection rejection data transmission means 44, <2> layer connection rejection data transmission means 46, <3> layer connection rejection Control is passed to the data transmitting means 48, and each rejected data transmitting means converts a command 212 (FIG. 22) described later of the own layer related protocol header 191, 192 or 193 in the connection request data into rejection information, A request for transmission of the data is made to the layer (step 104). Alternatively, when control is passed from the reception process (when the connection request information is determined to be invalid in the upper layer), “disconnection” is set as the input parameter in order to return the layer management state of the own layer from the connection reception state to the disconnection state. Set <
3> layer state management means 4, <2> layer state management means 7, <1
> Call the layer state management means 10 (step 105)
Protocol header 191, 192 or 193 in which the command is rejected in connection rejection data passed from the host
Is sent to the lower layer (step 10).
6). At this time, when the determination layer and the transmission means are the lowest layer, reject data is sent out on the line.

【００２７】図１２のステップ１１１を参照すると、＜
１＞層接続拒否データ受付手段４５、＜２＞層接続拒否
データ受付手段４７は自層より１つ上位層からの接続要
求拒否データを受け付けて接続拒否データ送信手段に制
御を渡す。Referring to step 111 of FIG.
The 1> layer connection rejection data receiving means 45 and the <2> layer connection rejection data receiving means 47 receive connection request rejection data from the layer immediately above the own layer and transfer control to the connection rejection data transmitting means.

【００２８】図１３のステップ１２１を参照すると、＜
１＞層接続要求データ通知手段１３、＜２＞層接続要求
データ通知手段１６、＜３＞層接続要求データ通知手段
１９は受信手段から渡された接続要求データから自層の
プロトコルヘッダ１９１、１９２あるいは１９３を削除
した上で上位にデータを渡す。Referring to step 121 of FIG.
The 1> layer connection request data notifying unit 13, the <2> layer connection request data notifying unit 16, and the <3> layer connection request data notifying unit 19 convert their own protocol headers 191 and 192 from the connection request data passed from the receiving unit. Alternatively, after deleting 193, the data is transferred to a higher order.

【００２９】図１４のステップ１３１を参照すると、＜
３＞層接続受諾応答受付手段２０、＜２＞層接続受諾応
答受付手段２２、＜１＞層接続受諾応答受付手段２４は
自層より１つ上位層からの接続受諾応答を受け付けて接
続受諾応答手段に制御を渡す。Referring to step 131 in FIG.
3> layer connection acceptance response receiving means 20, <2> layer connection acceptance response receiving means 22, and <1> layer connection acceptance response receiving means 24 receive a connection acceptance response from a layer one level higher than the own layer, and receive a connection acceptance response. Pass control to the means.

【００３０】図１５を参照すると、＜３＞層接続受諾応
答手段２１、＜２＞層接続受諾応答手段２３、＜１＞層
接続受諾応答手段２５は自層の層管理状態を接続受付状
態から接続状態に更新するため、入力パラメータに”接
続”を設定して＜３＞層状態管理手段４、＜２＞層状態
管理手段７、＜１＞層状態管理手段１０を呼び出し（ス
テップ１４１）、上位からの接続受諾応答データの前に
自層のプロトコルヘッダ１９１、１９２あるいは１９３
を付加して下位層に送信要求を行う（ステップ１４
２）。自層が、＜１＞層即ち最下位層の場合には結果的
に作成された接続受諾応答データを回線に送出する。Referring to FIG. 15, <3> layer connection acceptance response means 21, <2> layer connection acceptance response means 23, and <1> layer connection acceptance response means 25 change the layer management state of the own layer from the connection acceptance state. In order to update the connection state, "connection" is set in the input parameter, and the <3> layer state management means 4, <2> layer state management means 7, and <1> layer state management means 10 are called (step 141). Before the connection acceptance response data from the upper layer, the protocol header 191, 192 or 193 of the own layer is used.
Is sent to the lower layer (step 14).
2). If the own layer is the <1> layer, that is, the lowest layer, the resultant connection acceptance response data is transmitted to the line.

【００３１】図１６のステップ１５１を参照すると、＜
３＞層接続拒否応答受付手段３２、＜２＞層接続拒否応
答受付手段３４、＜１＞層接続拒否応答受付手段３６は
自層より１つ上位層からの接続拒否応答を受け付けて接
続拒否応答手段に制御を渡す。Referring to step 151 in FIG.
The 3> layer connection rejection response receiving means 32, the <2> layer connection rejection response receiving means 34, and the <1> layer connection rejection response receiving means 36 receive a connection rejection response from a layer one level higher than the own layer and respond to the connection rejection. Pass control to the means.

【００３２】図１７のステップ１６１〜１６２を参照す
ると、＜３＞層接続拒否応答手段３３、＜２＞層接続拒
否応答手段３５、接続拒否応答データ送信手段３７は自
層の層管理状態を接続受付状態から切断状態に戻すた
め、入力パラメータに”切断”を設定して＜３＞層状態
管理手段４、＜２＞層状態管理手段７、＜１＞層状態管
理手段１０を呼び出し（１６１）、上位からの接続拒否
応答データの前に自層のプロトコルヘッダ１９１、１９
２あるいは１９３を付加して下位層に送信要求を行う
（１６２）。自層が、＜１＞層即ち最下位層の場合には
結果的に作成された接拒否応答データを回線に送出す
る。Referring to steps 161 to 162 in FIG. 17, <3> layer connection rejection response means 33, <2> layer connection rejection response means 35, and connection rejection response data transmission means 37 connect the layer management state of the own layer. In order to return from the accepting state to the disconnected state, "disconnect" is set in the input parameter and the <3> layer state managing means 4, <2> layer state managing means 7, and <1> layer state managing means 10 are called (161). Before the connection rejection response data from the host, the protocol headers 191 and 19 of the own layer.
A transmission request is made to the lower layer by adding 2 or 193 (162). If the own layer is the <1> layer, that is, the lowest layer, the resulting connection rejection response data is transmitted to the line.

【００３３】図１８を参照すると、＜３＞層状態管理手
段４、＜２＞層状態管理手段７、＜１＞層状態管理手段
１０は、指定パラメータを判別し（ステップ１７
１）、”切断”なら層管理状態を”切断状態”に更新し
（ステップ１７２）、”接続要求”なら層管理状態を”
接続要求状態”に更新し（ステップ１７３）、”接続受
付”なら層管理状態を”接続受付状態”に更新し（ステ
ップ１７４）、”接続”なら層管理状態を”接続状態”
に更新し（ステップ１７５）処理を終える。Referring to FIG. 18, <3> layer state management means 4, <2> layer state management means 7, and <1> layer state management means 10 determine the designated parameter (step 17).
1) If "disconnected", update the layer management state to "disconnected state" (step 172); if "connection request", update the layer management state to "disconnected".
The status is updated to "connection request status" (step 173). If "connection accepted", the layer management status is updated to "connection acceptance status" (step 174). If "connection", the layer management status is updated to "connection status".
(Step 175), and the process ends.

【００３４】図１９を参照すると、＜１＞層接続要求情
報判定手段１２、＜２＞層接続要求情報判定手段１５、
＜３＞層接続要求情報判定手段１８は与えられたプロト
コルヘッダ１９１、１９２あるいは１９３を解析し、ア
ドレス情報２１１とコマンド２１２およびプロトコルパ
ラメータ２１３の正当性を判定し（ステップ１８１）、
判定処理（ステップ１８２）で正当であれば次に当該層
のトラヒック状態等を判定し（ステップ１８３）、判定
処理（ステップ１８４）で許容値以内であれば判定結果
を”受諾”として処理を終える（ステップ１８５）。Referring to FIG. 19, <1> layer connection request information determining means 12, <2> layer connection request information determining means 15,
<3> The layer connection request information determining means 18 analyzes the given protocol header 191, 192 or 193, and determines the validity of the address information 211, the command 212 and the protocol parameter 213 (step 181).
If it is valid in the determination process (step 182), the traffic state or the like of the layer is determined next (step 183). If it is within the allowable value in the determination process (step 184), the determination result is "accepted" and the process ends. (Step 185).

【００３５】判定処理（ステップ１８２）で不正と判定
された場合には判定結果を”拒否（異常）”として処理
を終える（ステップ１８７）。判定処理（ステップ１８
４）で許容値以上と判定された場合には判定結果を”拒
否（資源）”として処理を終える（ステップ１８６）。If it is determined in the determination process (step 182) that the content is illegal, the process is terminated with the result of the determination as "rejection (abnormal)" (step 187). Judgment process (step 18
If it is determined in step 4) that the value is equal to or larger than the allowable value, the process is terminated with the result of the determination as "denial (resource)" (step 186).

【００３６】図２０はＡＰ接続要求データの一般形式を
説明する図であって、＜１＞層プロトコルヘッダ１９
１、＜２＞層プロトコルヘッダ１９２、＜３＞層プロト
コルヘッダ１９３およびＡＰ接続要求データ１９４から
構成されている。FIG. 20 is a diagram for explaining the general format of the AP connection request data.
1, <2> layer protocol header 192, <3> layer protocol header 193, and AP connection request data 194.

【００３７】図２１はＡＰ接続受諾／拒否応答データの
一般形式を説明する図であって、＜１＞層プロトコルヘ
ッダ１９１、＜２＞層プロトコルヘッダ１９２、＜３＞
層プロトコルヘッダ１９３およびＡＰ接続受諾／拒否応
答データ２０４から構成されている。FIG. 21 is a diagram for explaining the general format of the AP connection acceptance / rejection response data, in which <1> layer protocol header 191, <2> layer protocol header 192, <3>
It comprises a layer protocol header 193 and AP connection acceptance / rejection response data 204.

【００３８】図２１は＜１＞層プロトコルヘッダ１９
１、＜２＞層プロトコルヘッダ１９２、＜３＞層プロト
コルヘッダ１９３の一般形式を説明する図であって、ア
ドレス情報２１１、コマンド２１２およびプロトコルパ
ラメータ２１３から構成されている。コマンド２１２は
２バイトの領域を持ち、００Ｈ〜０４Ｈを規定し、それ
ぞれ通常データ、接続要求データ、接続受諾応答デー
タ、接続拒否応答データ（ＡＰ）、接続拒否応答データ
（プロトコル実行手段）である。FIG. 21 shows the <1> layer protocol header 19.
1 is a diagram for explaining the general format of a <2> layer protocol header 192 and a <3> layer protocol header 193, and includes address information 211, a command 212, and a protocol parameter 213. The command 212 has a 2-byte area and specifies 00H to 04H, and is normal data, connection request data, connection acceptance response data, connection rejection response data (AP), and connection rejection response data (protocol execution means).

【００３９】[0039]

【発明の効果】以上説明したように、本発明は、通信ア
ーキテクチャに論理的な層構造を持つ複数のコンピュー
タ同士が互いに対応する各層間である決められたプロト
コルを実行することでエンド・エンドのアプリケーショ
ンプログラム間の通信手段を提供するコンピュータネッ
トワークシステムにおいて、アプリケーション間の接続
を行う場合に各層全部の接続要求情報を一括して設定し
たデータを送信し、送信要求受付システムにおいては、
ＡＰから接続要求受諾を指示されて初めて各層の状態を
接続状態とするため、各層においては接続状態に移行す
る契機が管理しやすく、また送受信されるデータに対し
て課金されるシステムにおいても送受信されるデータが
接続要求が受諾される場合、拒否される場合に限らず最
高２個しか流れないため接続までに課金される量が極端
に減少する効果がある。As described above, according to the present invention, a plurality of computers having a logical layer structure in a communication architecture execute a predetermined protocol between respective layers corresponding to each other, thereby enabling an end-to-end communication. In a computer network system that provides communication means between application programs, when connection between applications is performed, data that collectively sets connection request information for all layers is transmitted, and in a transmission request reception system,
Since the state of each layer is set to the connection state only after the AP requests the connection request, the trigger for transitioning to the connection state in each layer is easy to manage, and the transmission and reception is performed even in a system that charges for transmitted and received data. When the connection request is accepted, the maximum amount of data flowing through the connection request is not limited to two, and the amount charged up to connection is extremely reduced.

【００４０】あるいは、接続要求が多数回発生する場合
でも、必要なプロトコルデータが最大２個で済むため、
回線割り込み回数が激減し結果的にホストコンピュータ
の負荷が軽減される効果がある。Alternatively, even if a connection request is issued many times, only two required protocol data are required.
This has the effect of dramatically reducing the number of line interrupts and consequently reducing the load on the host computer.

【００４１】更には、接続要求受付側のＡＰが接続要求
の受諾意思を示して初めて回線が接続されることにな
り、セキュリティ上も完全なシステムを構築できる効果
がある。Further, the line is connected only after the AP on the connection request receiving side indicates the intention to accept the connection request, and there is an effect that a complete system can be constructed in terms of security.

[Brief description of the drawings]

【図１】本発明の送信側の一実施例を示すブロック図で
ある。FIG. 1 is a block diagram showing one embodiment of a transmitting side of the present invention.

【図２】本発明の受信側の一実施例を示すブロック図で
ある。FIG. 2 is a block diagram showing one embodiment of a receiving side of the present invention.

【図３】各層接続要求受付手段２、５、８のフローチャ
ートである。FIG. 3 is a flowchart of each layer connection request receiving means 2, 5, and 8;

【図４】各層接続要求手段３、６、９のフローチャート
である。FIG. 4 is a flowchart of each layer connection request means 3, 6, 9;

【図５】各層接続受諾応答データ受信手段２６、２８、
３０のフローチャートである。FIG. 5 shows each layer connection acceptance response data receiving means 26, 28,
FIG.

【図６】各層接続受諾応答データ通知手段２７、２９、
３１のフローチャートである。FIG. 6 shows each layer connection acceptance response data notification means 27, 29,
It is a flowchart of 31.

【図７】各層接続拒否応答データ受信手段３８、４０、
４２のフローチャートである。FIG. 7 shows each layer connection rejection response data receiving means 38, 40;
42 is a flowchart of FIG.

【図８】各層接続拒否応答データ通知手段３９、４１、
４３のフローチャートである。FIG. 8 shows each layer connection rejection response data notification means 39, 41,
It is a flowchart of 43.

【図９】各層接続拒否データ受信手段４９、５１、５３
のフローチャートである。FIG. 9 shows each layer connection rejection data receiving means 49, 51, 53;
It is a flowchart of FIG.

【図１０】各層接続拒否データ通知手段５０、５２、５
４のフローチャートである。FIG. 10 shows each layer connection rejection data notification means 50, 52, 5
4 is a flowchart of FIG.

【図１１】各層接続要求データ受信手段１１、１４、１
７および各層接続拒否データ送信手段４４、４６、４８
のフローチャートである。FIG. 11 shows each layer connection request data receiving means 11, 14, 1;
7 and each layer connection rejection data transmitting means 44, 46, 48
It is a flowchart of FIG.

【図１２】各層接続拒否データ受付手段４５、４７のフ
ローチャートである。FIG. 12 is a flowchart of each layer connection rejection data receiving means 45 and 47.

【図１３】各層接続要求データ通知手段１３、１６、１
９のフローチャートである。FIG. 13 shows each layer connection request data notifying means 13, 16, 1;
9 is a flowchart of FIG.

【図１４】各層接続受諾応答受付手段２０、２２、２４
のフローチャートである。FIG. 14 shows each layer connection acceptance response accepting means 20, 22, 24;
It is a flowchart of FIG.

【図１５】各層接続受諾応答手段２１、２３および接続
受諾応答データ送信手段２５のフローチャートである。15 is a flowchart of each layer connection acceptance response means 21 and 23 and a connection acceptance response data transmission means 25. FIG.

【図１６】各層接続拒否応答受付手段３２、３４、３６
のフローチャートである。FIG. 16 shows each layer connection rejection response receiving means 32, 34, 36;
It is a flowchart of FIG.

【図１７】各層接続拒否応答手段３３、３５および接続
拒否応答データ送信手段３７のフローチャートである。17 is a flowchart of each layer connection rejection response means 33 and 35 and connection rejection response data transmission means 37. FIG.

【図１８】各層状態管理手段４、７、１０のフローチャ
ートである。FIG. 18 is a flowchart of each layer state management means 4, 7, 10.

【図１９】各層接続要求情報判定手段１２、１５、１８
のフローチャートである。FIG. 19 is each layer connection request information determination means 12, 15, and 18;
It is a flowchart of FIG.

【図２０】ＡＰ接続要求データの一般形式を示す図であ
る。FIG. 20 is a diagram showing a general format of AP connection request data.

【図２１】ＡＰ接続受諾／拒否応答データの一般形式を
示す図である。FIG. 21 is a diagram showing a general format of AP connection acceptance / rejection response data.

【図２２】プロトコルヘッダの詳細を示す図である。FIG. 22 is a diagram showing details of a protocol header.

[Explanation of symbols]

１通信プロトコル実行手段２＜３＞層接続要求受付手段３＜３＞層接続要求手段４＜３＞層状態管理手段５＜２＞層接続要求受付手段６＜２＞層接続要求手段７＜２＞層状態管理手段８＜１＞層接続要求受付手段９＜１＞層接続要求データ送信手段１０＜１＞層状態管理手段１１＜１＞層接続要求データ受信手段１２＜１＞層接続要求情報判定手段１３＜１＞層接続要求データ通知手段１４＜２＞層接続要求データ受信手段１５＜２＞層接続要求情報判定手段１６＜２＞層接続要求データ通知手段１７＜３＞層接続要求データ受信手段１８＜３＞層接続要求情報判定手段１９＜３＞層接続要求データ通知手段２０＜３＞層接続受諾応答受付手段２１＜３＞層接続受諾応答手段２２＜２＞層接続受諾応答受付手段２３＜２＞層接続受諾応答手段２４＜１＞層接続受諾応答受付手段２５接続受諾応答データ送信手段２６＜１＞層接続受諾応答データ受信手段２７＜１＞層接続受諾応答データ通知手段２８＜２＞層接続受諾応答データ受信手段２９＜２＞層接続受諾応答データ通知手段３０＜３＞層接続受諾応答データ受信手段３１＜３＞層接続受諾応答データ通知手段３２＜３＞層接続拒否応答受付手段３３＜３＞層接続拒否応答手段３４＜２＞層接続拒否応答受付手段３５＜２＞層接続拒否応答手段３６＜１＞層接続拒否応答受付手段３７接続拒否応答データ送信手段３８＜１＞層接続拒否応答データ受信手段３９＜１＞層接続拒否応答データ通知手段４０＜２＞層接続拒否応答データ受信手段４１＜２＞層接続拒否応答データ通知手段４２＜３＞層接続拒否応答データ受信手段４３＜３＞層接続拒否応答データ通知手段４４＜１＞層接続拒否データ送信手段４５＜１＞層接続拒否データ受付手段４６＜２＞層接続拒否データ送信手段４７＜２＞層接続拒否データ受付手段４８＜３＞層接続拒否データ送信手段４９＜１＞層接続拒否データ受信手段５０＜１＞層接続拒否データ通知手段５１＜２＞層接続拒否データ受信手段５２＜２＞層接続拒否データ通知手段５３＜３＞層接続拒否データ受信手段５４＜３＞層接続拒否データ通知手段５５アプリケーションプログラム５６ホストコンピュータ５７網 DESCRIPTION OF SYMBOLS 1 Communication protocol execution means 2 <3> Layer connection request reception means 3 <3> Layer connection request means 4 <3> Layer state management means 5 <2> Layer connection request reception means 6 <2> Layer connection request means 7 <2 > Layer state management means 8 <1> Layer connection request receiving means 9 <1> Layer connection request data transmitting means 10 <1> Layer state management means 11 <1> Layer connection request data receiving means 12 <1> Layer connection request information Judging unit 13 <1> Layer connection request data notifying unit 14 <2> Layer connection request data receiving unit 15 <2> Layer connection request information judging unit 16 <2> Layer connection request data notifying unit 17 <3> Layer connection request data Receiving unit 18 <3> Layer connection request information determination unit 19 <3> Layer connection request data notification unit 20 <3> Layer connection acceptance response receiving unit 21 <3> Layer connection acceptance response unit 22 <2> Layer connection acceptance response reception means 23 <2> Layer connection acceptance response means 24 <1> Layer connection acceptance response reception means 25 Connection acceptance response data transmission means 26 <1> Layer connection acceptance response data reception means 27 <1> Layer connection acceptance response data notification means 28 < 2> Layer connection acceptance response data receiving means 29 <2> Layer connection acceptance response data notifying means 30 <3> Layer connection acceptance response data receiving means 31 <3> Layer connection acceptance response data notifying means 32 <3> Layer connection rejection response Reception means 33 <3> Layer connection rejection response means 34 <2> Layer connection rejection response reception means 35 <2> Layer connection rejection response means 36 <1> Layer connection rejection response reception means 37 Connection rejection response data transmission means 38 <1 > Layer connection rejection response data receiving means 39 <1> Layer connection rejection response data notifying means 40 <2> Layer connection rejection response data receiving means 41 <2> Layer connection rejection response data Notification means 42 <3> layer connection rejection response data receiving means 43 <3> layer connection rejection response data notification means 44 <1> layer connection rejection data transmitting means 45 <1> layer connection rejection data receiving means 46 <2> layer Connection rejection data transmitting means 47 <2> Layer connection rejection data receiving means 48 <3> Layer connection rejection data transmitting means 49 <1> Layer connection rejection data receiving means 50 <1> Layer connection rejection data notifying means 51 <2> layer Connection rejection data receiving means 52 <2> Layer connection rejection data notification means 53 <3> Layer connection rejection data receiving means 54 <3> Layer connection rejection data notification means 55 Application program 56 Host computer 57 Network

Claims

(57) [Claims]

1. A computer which provides a communication means between end-to-end application programs by executing a predetermined protocol between layers corresponding to each other and having a logical layer structure in a communication architecture. The application program connection method in the network system has a protocol of the <N> layer, and the transmitting side has the <N> layer connection request receiving means for receiving the connection request from the application program and the <N> layer state. The connection request data from the application program passed from the <N> layer state management means and the <N> layer connection request reception means for changing the connection state from the disconnected state to the connection request state is <N> for making a connection between the <N> layers. > A connection request is made to the <N-1> layer by adding the layer connection request information <N> A connection requesting means, a <N-1> layer connection request receiving means for receiving a connection request from the <N> layer connection requesting means, and changing the <N-1> layer state from a disconnected state to a connection requesting state <N-1>> Layer state management means and <N-1
> The connection request data from the <N> layer passed from the layer connection request receiving means is used to perform connection between <N-1> layers.
<N-1> layer connection request means for making a connection request to the <N-2> layer by adding the N-1> layer connection request information, and the <N> layers and the <<N-1> layer and the <N
-2> each layer means having the same relation as the layer relation, and <1> receiving a connection request from the <2> layer connection request means.
> Layer connection request receiving means and <1> Layer state is changed from disconnected state to connection request state. <1> Layer state management means and connection from <2> layer passed from <1> Layer connection request receiving means. Transmission-side communication protocol execution means having connection request data transmission means for adding <1> layer connection request information for performing connection between <1> layers to request data and transmitting the connection request data on a transmission path, On the receiving side, the lowest-order <1> layer connection request data receiving means for receiving the connection request data from the transmission path and determining the validity of the connection request information between <1> layers in the connection request data <1>&Gt; If the layer connection request information determining means and the validity are determined, <1
> Change the layer state from the disconnected state to the connection accepting state. <1> Layer state management means and delete the connection request information between the <1> layers from the connection request data and pass it to the upper <2> layer. Receiving the connection request data passed from the connection request data notification means and the <1> layer connection request data notification means <2>
<2> Determine the validity of the connection request information between the layers in the connection request data received by the layer connection request data receiving means. <2> When the layer connection request information determination means and the validity are determined, Changes the <2> layer state from the disconnected state to the connection accepting state, deletes the <2> layer connection request information from the <2> layer state management means and the connection request data received from the <1> layer, and <2> layer connection request data notifying means to be passed to layer <3>
Each of the layer units having the same relationship as the relationship between the <1> layer, the <2> layer, and the <3> layer, and receiving the connection request data passed from the <N-1> layer connection request data notification unit < N
> The layer connection request data receiving means and the received connection request data determine the validity of the connection request information between <N> layers. <N> The layer connection request information determining means determines the validity of the connection request information. Deletes the connection request information between the <N> layers from the <N> layer state management means and the connection request data received from the <N-1> layer from the <N> layer state to the connection acceptance state from the disconnected state. And <N> layer connection request data notifying means for passing to said application program.

2. The receiving-side communication protocol executing means receives the connection acceptance response from the application program, and the highest-order <N> -layer connection acceptance response receiving means, and changes the <N> -layer state from the connection receiving state to the connection state. <N>
<N> layer connection acceptance response information for accepting the connection between the <N> layers is added to the connection acceptance response data from the application program passed from the layer state management means and the <N> layer connection acceptance response receiving means. The <N> layer connection acceptance response means to be added, the <N-1> layer connection acceptance response reception means for accepting a connection acceptance response from the <N> layer connection acceptance response means, and the connection acceptance state of the <N> layer state The connection between the <N> layer and the connection acceptance response data from the <N> layer passed from the <N-1> layer state management means and the <N-1> layer connection acceptance response receiving means to make the connection state <N-1> layer connection acceptance response means for adding <N> layer connection acceptance response information for accepting, and the above <N> until the <2> layer
Layer means having the same relationship as the relationship between the <N-1> layer and the <N-2> layer, and the <1> layer connection for receiving a connection acceptance response from the <2> layer connection acceptance response means. Acceptance response receiving means, the connection from the <2> layer passed from the <1> layer state management means, and the <1> layer connection acceptance response receiving means for changing the <1> layer state from the connection reception state to the connection state. Connection acceptance response data transmitting means for adding <1> layer connection acceptance response information for accepting the connection between the <1> layers to the acceptance response data and transmitting the added connection acceptance response data to the transmission path. The transmission-side communication protocol execution means connects the lowermost <1> layer connection acceptance response data receiving means for receiving the connection acceptance response data from the transmission line with the <1> layer state from a connection request state. <1> Layer status management And <1> layer connection acceptance response data notifying means for deleting the connection acceptance response information between the <1> layers from the connection acceptance response data received from the transmission path and passing the information to the higher <2>layer;1> receiving the connection acceptance response data passed from the layer connection acceptance response data notifying unit; <2> changing the layer status from the connection request state to the connection state from the connection request state; The layer status management means and the connection acceptance response information between the <2> layers are deleted from the connection acceptance response data received from the <1> layer and passed to the higher <3> layer. And the following <1> layer and the <<1> layer up to the <N-1> layer.
<N> -layer connection that receives connection acceptance response data passed from the <N-1> -layer connection acceptance response data notifying means, and each layer means having the same relationship as the relationship between the <2> layer and the <3> layer. Acceptance response data receiving means, the <N> layer state from the connection request state to the connection state, the <N> layer state management means, and the <N> layer based on the connection acceptance response data received from the <N-1> layer. 2. An application program connection system according to claim 1, further comprising: <N> layer connection acceptance response data notifying means for deleting the connection acceptance response information of (a) and passing the information to the application program.

3. The <N> layer connection rejection response receiving means for receiving a connection rejection response from the application program, wherein the receiving side communication protocol executing means receives the connection rejection response from the application program.
> Return the layer state from the connection accepting state to the disconnected state. <N> The layer state management means and the connection rejection response data from the application program passed from the <N> layer connection rejection response receiving means. To reject connection <
An <N> layer connection rejection response means for performing a connection rejection response to the <N-1> layer by adding the N> layer connection rejection response information;
<N-1> layer connection rejection response receiving means for receiving a connection rejection response from layer connection rejection response means;
The connection state rejection response data from the <N> layer passed from the <N-1> layer state management means and the <N-1> layer connection rejection response receiving means returning the layer state from the connection acceptance state to the disconnected state. <N-1><N-1> for rejecting connection between layers
<N-1> layer connection rejection response means for performing a connection rejection response to the <N-2> layer by adding layer connection rejection response information;
Each layer means having the same relationship as the relationship between the <N> layer, the <N-1> layer, and the <N-2> layer up to the> layer,
The <2> layer connection rejection response receiving unit receives the connection rejection response from the <1> layer connection rejection response unit, and the <1> layer connection rejection response receiving unit.
Returning the layer state from the connection accepting state to the disconnected state from the <1> layer state management means and the <1> layer connection rejection response data passed from the <2> layer passed from the <1> layer connection rejection response receiving means.
And <1> connection rejection response data transmitting means for adding layer connection rejection response information and transmitting the added connection rejection response data on the transmission line for rejecting connection between layers. Protocol execution means receiving the connection rejection response data from the transmission line at the lowest order <1>
The layer connection rejection response data receiving means, the <1> layer state is returned from the connection request state to the disconnection state, and the <1> layer state management means and the connection rejection response data received from the transmission line are used to determine the <
<1> layer connection rejection response data notifying means for deleting connection rejection response information between layers and passing the information to the upper <2>layer;
1> Receiving the connection rejection response data passed from the layer connection rejection response data notification means <2> Layer connection rejection response data receiving means and returning the <2> layer state from the connection request state to the disconnected state <2> layer A state management unit, and a <2> layer connection rejection response data notifying unit that deletes the connection rejection response information between the <2> layers from the connection rejection response data received from the <1> layer and passes it to the upper <3> layer. The layer means having the same relationship between the <1> layer, the <2> layer, and the <3> layer until reaching the <N-1> layer, and the <N-1> layer connection rejection response <N> layer connection rejection response data receiving means for receiving the connection rejection response data passed from the data notification means, and returning the <N> layer state from the connection request state to the disconnected state <N>
The connection rejection response information between the <N> layers is deleted from the layer rejection response data received from the layer status management means and the <N-1> layer, and the deleted connection rejection response information is passed to the application program. 2. The application program connection method according to claim 1, further comprising: a layer connection rejection response data notification unit.

4. When the receiving-side communication protocol executing means determines that the connection request information between the <N> layers in the connection request data is invalid by the <N> layer connection request information determining means, The <N> layer connection request information in the connection request data is replaced with connection refusal information, and <N-1
<N> layer connection rejection data transmitting means to be passed to the
N> receiving the connection rejection data from the layer connection rejection data transmitting means <N-1> layer connection rejection data receiving means
N-1> Return layer state from connection accepting state to disconnected state <N
-1> when the layer status management means and the <N-1> layer connection request information determination means determine that the connection request information between the <N-1> layers in the connection request data is invalid, −
1> The connection rejection data received from the layer connection rejection data receiving means is added with the connection rejection response information between the <N-1> layers and transmitted to the lower <N-2> layer. Rejection data transmission means;
-1> each layer means for performing the same processing as the layer, <2> layer connection rejection data receiving means for receiving the connection rejection data from the <2> layer connection rejection data transmitting means, and <1> layer connection rejection state When the connection request information between the <1> layers in the connection request data is determined to be invalid by the <1> layer state management means and the <1> layer connection request information determination means, And <1> layer connection rejection data transmitting means for adding the <1> layer connection rejection response information to the connection rejection data received from the layer connection rejection data receiving means and transmitting the result to the transmission path. The lower-layer <1> layer connection rejection data receiving means for receiving the connection rejection data from the transmission line;
<1> Return the layer state from the connection request state to the disconnected state. <1> Delete the <1> layer connection rejection information from the <1> layer connection rejection information from the layer rejection data received from the transmission line and the upper layer <
<2> Layer connection rejection data notifying means, which receives the connection rejection data passed from <1> layer connection rejection data notifying means, and <2> layer connection rejection data receiving means, and <2> Return the layer state from the connection request state to the disconnected state <2
> The connection state rejection information between the <2> layers or the <<
2> The transmission request information added by the layer is deleted and the upper <3>
<2> layer connection rejection data notification means to be passed to the layer;
Each layer means for performing the same processing as the <2> layer up to the <-1> layer, and receiving the connection rejection data passed from the <N-1> layer connection rejection data notifying means <N> layer connection rejection data reception Means for returning the state of the <N> layer from the connection request state to the disconnected state, the <N> layer state management means, and the connection rejection information between the <N> layers or the connection rejection data from the connection rejection data received from the <N-1> layer. 2. The application program connection system according to claim 1, further comprising: <N> layer connection rejection data notifying means for deleting the transmission request information added by the <N> layer and passing it to the application program.