Communication apparatus, communication method, and non-transitory computer-readable storage medium

1. A communication apparatus capable of communication by a predetermined wireless connection method, the apparatus comprising:

a decision unit configured to decide which of the communication apparatus and a communication partner apparatus operates as an access point and which operates as a client;

a connection unit configured to connect to the communication partner apparatus by the predetermined wireless connection method, based on a decision by the decision unit;

a determination unit configure to determine whether a connection by the connection unit is disconnected; and

a reactivation unit configured to perform reactivation processing for causing the communication apparatus to stop using an IP address used in communication with the communication partner apparatus that is connected to by the connection unit, and enter a state in which communication by the predetermined wireless connection method is possible,

wherein, if it is decided by the decision unit that the communication apparatus operates as the client and it is determined by the determination unit that the connection is disconnected, the reactivation unit performs the reactivation processing.

2. The communication apparatus according to claim 1 , further comprising a selection unit configured to select whether to permit communication by the predetermined wireless connection method for the communication apparatus, based on a user operation,

wherein, if it is decided by the decision unit that the communication apparatus operates as the client and it is determined by the determination unit that the connection with the communication partner apparatus is disconnected, and furthermore, if it is selected by the selection unit to permit communication by the predetermined wireless connection method, the reactivation unit performs the reactivation processing.

3. The communication apparatus according to claim 2 , further comprising a stopping unit configured to stop communication by the predetermined wireless connection method,

wherein, if it is decided by the decision unit that the communication apparatus operates as the client and it is determined by the determination unit that the connection with the communication partner apparatus is disconnected, and furthermore, if it is selected by the selection unit to not permit communication by the predetermined wireless connection method, the stopping unit stops communication by the predetermined wireless connection method.

4. The communication apparatus according to claim 1 , further comprising a detection unit configured to detect a connection event by the predetermined wireless connection method, wherein

the determination unit, if the connection event detected by the detection unit is a disconnection event, determines that a connection with the communication partner apparatus has been disconnected.

5. The communication apparatus according to claim 1 , wherein the reactivation processing includes processing for stopping processing for operating as the client.

6. The communication apparatus according to claim 1 , wherein the reactivation processing includes processing for detecting another communication apparatus that is capable of communication by the predetermined wireless connection method.

7. The communication apparatus according to claim 1 , wherein the predetermined wireless connection method is a wireless connection method that conforms to Wi-Fi Direct.

8. A communication method by a predetermined wireless connection method, the method comprising:

deciding which of a communication apparatus and a communication partner apparatus operates as an access point and which operates as a client;

connecting the communication apparatus and the communication partner apparatus by the predetermined wireless connection method, based on the decision;

determining whether the connection is disconnected; and

if it the decision is that the communication apparatus operates as the client and the determination is that the connection is disconnected, performing reactivation processing for causing the communication apparatus to stop using an IP address used in communication with the communication partner apparatus, and enter a state in which communication by the predetermined wireless connection method is possible.

9. A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute a communication method by a predetermined wireless connection method, the method comprising:

deciding which of a communication apparatus and a communication partner apparatus operates as an access point and which operates as a client;

connecting the communication apparatus and the communication partner apparatus by the predetermined wireless connection method, based on the decision;

determining whether the connection is disconnected; and

if it the decision is that the communication apparatus operates as the client and the determination is that the connection is disconnected, performing reactivation processing for causing the communication apparatus to stop using an IP address used in communication with the communication partner apparatus, and enter a state in which communication by the predetermined wireless connection method is possible.