Information processing system, information processing apparatus, and control method for virtual network computing connection method for a remotely operated apparatus

An information processing system including an information processing apparatus operating as a virtual network computing (VNC) server, and a terminal operating as a VNC client,

• wherein the terminal comprises:
• a memory;
• and
• at least one processor in communication with the memory,
• wherein the at least one processor of the terminal is configured to transmit, to the information processing apparatus, version information of a remote frame buffer (RFB) protocol as information for designating whether to prioritize a connection with a VNC client connected earlier using VNC, or prioritize a connection with a VNC client connected later using VNC, when performing VNC connection processing with the information processing apparatus,
• wherein the information processing apparatus comprises:
• a memory;
• and
• at least one processor in communication with the memory, and
• wherein the at least one processor of the information processing apparatus is configured to perform:
• in a case where a request for a VNC connection is received from the terminal in a state in which a VNC client connected earlier using VNC exists,
• first connection control to maintain the connection with the VNC client connected earlier using VNC and not to establish a VNC connection with the terminal, or
• second connection control to cut off the connection with the VNC client connected earlier using VNC, and to establish a VNC connection with the terminal,
• receive the version information from the VNC client;
• and
• switch whether to perform the first connection control or the second connection control, based on the received version information.

A control method for an information processing apparatus operating as a virtual network computing (VNC) server, the control method comprising:

• performing,
• in a case where a request for VNC connection has been received from a second VNC client in a state in which the information processing apparatus is connected with a first VNC client using VNC,
• first connection control to maintain a connection with the first client and not to establish a VNC connection with the second VNC client, or
• second connection control to cut off the connection with the first client and to establish a VNC connection with the second VNC client,
• receive version information of a remote frame buffer (RFB) protocol from a VNC client;
• and
• switch whether to perform the first connection control or the second connection control, based on the received version information.