Load balancing system, method, and apparatus

A load balancing method, comprising:

• receiving, by a server, a first message from a client through a load balancing device, wherein the first message requests establishing a first Transmission Control Protocol (TCP) connection;
• calculating, by the server, a token of the server based on a number of the server;
• calculating, by the server, a key of the server based on the token using a first function, wherein the number of the server includes an identifier of the server;
• and
• sending, by the server, a response message of the first message to the client, wherein the response message comprises the key of the server and the first function, wherein the first function is for the client to calculate the token of the server based on the key in order to establish, based on the token of the server, a second TCP connection to the server, and wherein the second TCP connection belongs to a same Multipath Transport Control Protocol (MPTCP) session as the first TCP connection.

A load balancing method, comprising:

• sending, by a client to a server through a load balancing device, a first message to request establishing a first Transmission Control Protocol (TCP) connection;
• receiving, by the client in response to the first message, a response message from the server, wherein the response message comprises a key of the server and a first function, wherein the first function is to calculate a token of the server based on the key, wherein the key of the server is calculated by the server based on a token of the server using the first function, wherein the token is calculated by the server based on a number of the server, and wherein the number of the server includes an identifier of the server;
• calculating, by the client, the token based on the key;
• and
• sending, to the load balancing device, a second message to request establishing a second TCP connection, wherein the second message comprises the token, wherein the token is for the load balancing device to determine that the server is a destination device of the second message in order to establish the second TCP connection between the client and the server, and wherein the second TCP connection and the first TCP connection belong to a same Multipath Transport Control Protocol (MPTCP) session.

A load balancing method, comprising:

• receiving, by a load balancing device, a first message from a client to request establishing a first Transmission Control Protocol (TCP) connection;
• sending, by the load balancing device, the first message to a server;
• receiving, by the load balancing device, a second message from the client to request establishing a second TCP connection, wherein the second TCP connection and the first TCP connection belong to a same MPTCP session, and wherein the second message comprises a token of the server;
• calculating the number of the server based on the token in the second message;
• determining that a destination device of the second message is the server according to an identifier of the server included in the number of the server;
• and
• sending the second message to the server in order to establish the second TCP connection between the client and the server.

A load balancing apparatus applied to a server, the load balancing apparatus comprising:

• a receiver configured to receive a first message from a client, wherein the first message requests establishing a first Transmission Control Protocol (TCP) connection;
• a processor coupled to the receiver and configured to:
• calculate a token of the server based on a number of the server;
• calculate a key of the server based on the token using a first function;
• and
• generate a response message based on the first message, wherein the number of the server includes an identifier of the server;
• and
• a transmitter coupled to the processor and configured to send the response message to the client, wherein the response message comprises the key of a server and the first function, and wherein the first function is for the client to calculate the token of the server based on the key of the server, in order to establish, based on the token of the server, a second TCP connection to the server, wherein the second TCP connection belongs to a same Multipath Transport Control Protocol (MPTCP) session as the first TCP connection.

A load balancing apparatus applied to a client, the load balancing apparatus comprising:

• a transmitter configured to send, to a server, a first message to request establishing a first Transmission Control Protocol (TCP) connection;
• a receiver configured to receive a response message from the server in response to the first message, wherein the response message comprises a key of the server and a first function, wherein the first function is to calculate a token of the server based on the key, wherein the key of the server is calculated by the server based on a token of the server using the first function, wherein the token is calculated by the server based on a number of the server, and wherein the number of the server includes an identifier of the server;
• and
• a processor coupled to the transmitter and the receiver and configured to:
• calculate the token based on the key using the first function;
• and
• send, to the load balancing device, a second message to request establishing a second TCP connection, wherein the second message comprises the token, wherein the token is for the load balancing device to determine that the server is a destination device of the second message in order to establish the second TCP connection between the client and the server, and wherein the second TCP connection and the first TCP connection belong to a same Multipath Transport Control Protocol (MPTCP) session.

A load balancing apparatus, comprising:

• a receiver configured to receive from a client a first message that requests establishing a first Transmission Control Protocol (TCP) connection;
• a transmitter configured to send the first message to a server, wherein the receiver is further configured to receive from the client a second message that requests establishing a second TCP connection, wherein the second TCP connection and the first TCP connection belong to a same Multipath Transport Control Protocol (MPTCP) session, and wherein the second message comprises a token of the server;
• and
• a processor coupled to the receiver and the transmitter and configured to:
• calculate a number of the server based on the token in the second message;
• determine that a destination device of the second message is the server according to an identifier of the server included in the number of the server;
• and
• send the second message to the server in order to establish the second TCP connection between the client and the server.