Method and system for data communication over network

1. A method for data communication over a network, comprising:

identifying one or more first users located within a preset range of a location of a second user, the identification being based on second user location information and first user location information;

comparing an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user;

verifying validity of the authorization code, comprising:

comparing an upload time for the authorization code with a cut-off time of an exchange code in the one or more exchange codes that matches the authorization code; and

in the event that the upload time of the authorization code is less than or equal to the cut-off time, determining the authorization code to be valid;

in the event that, among the one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user, an exchange code that matches the authorization code exists, and the authorization code is determined to be valid:

establishing a data exchange channel over a communications network between the second user and one of the one or more first users pre-allocated with the exchange code that matches the authorization code; and

performing a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code that matches the authorization code; and

in the event that an exchange code that matches the authorization code does not exist or the authorization code is determined to be invalid, refusing a data exchange between the second user and the first user.

2. The method as described in claim 1 , wherein:

the preset range comprises a preset geographic area range; and

the identifying of the one or more first users located within the preset range of the location of the second user based on the second user location information and the first user location information further comprises:

comparing the first user location information from the one or more first users with the second user location information; and

in the event that a location indicated by the first user location information falls within the preset geographic area range for the location indicated by the second user location information, confirming a first user having the first user location information within the preset geographic area range as a first user within the preset range of the location of the second user.

3. The method as described in claim 1 , further comprising:

ending the data exchange in the event that none of the one or more exchange codes of the one or more first users located within the preset range of the location of the second user matches the authorization code or the authorization code is determined to be invalid.

4. The method as described in claim 1 , wherein:

in the event that the exchange code matching the authorization code exists:

verifying the validity of the authorization code; and

in the event that the authorization code is determined to be invalid, ending the data exchange; and

in the event that the exchange code that matches the authorization code does not exist:

omitting verifying the validity of the authorization code; and

ending the data exchange.

5. The method as described in claim 1 , wherein:

the exchange code represents unique data, has a valid time, and is subject to only one use by a first user bound to the exchange code within the valid time; or

the exchange code representing unique random data within a certain range, having a valid time, and being subject to only one use by a first user bound to the exchange code within the valid time.

6. A method for data communication over a network, comprising:

identifying one or more first users located within a preset range of a location of a second user based on second user location information and first user location information;

comparing an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user;

verifying validity of the authorization code;

in the event that, among the one or more exchange codes of the one or more first users within a definite range of the location of the second user, an exchange code matching the authorization code exists, and the authorization code is determined to be valid:

establishing a data exchange channel over a communications network between the second user and a first user corresponding to the exchange code matched with the authorization code; and

performing a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code matched with the authorization code, wherein the authorization code is created based on the exchange code pre-allocated to the first user; and

in the event that an exchange code matching the authorization code does not exist or the authorization code is determined to be invalid, refusing a data exchange between the second user and the first user.

7. A system for data communication over a network, comprising:

a processor; and

a memory coupled with the processor, wherein the memory is configured to provide the processor with instructions which when executed cause the processor to:

identify one or more first users located within a preset range of a location of a second user, the identification being based on second user location information and first user location information;

compare an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user;

verify validity of the authorization code, comprising to:

compare an upload time for the authorization code with a cut-off time of an exchange code in the one or more exchange codes that matches the authorization code; and

in the event that the upload time of the authorization code is less than or equal to the cut-off time, determine the authorization code to be valid;

in the event that, among the one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user, an exchange code that matches the authorization code, and the authorization code is determined to be valid:

establish a data exchange channel over a communications network between the second user and one of the one or more first users pre-allocated with the exchange code matched with the authorization code; and

perform a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code that matches the authorization code; and

in the event that an exchange code that matches the authorization code does not exist or the authorization code is determined to be invalid, refuse a data exchange between the second user and the first user.

8. The system as described in claim 7 , wherein:

the preset range comprises a preset geographic area range; and

the identifying of the one or more first users located within the preset range of the location of the second user based on the second user location information and the first user location information, further comprises:

compare the first user location information from the one or more first users with the second user location information; and

in the event that a location indicated by the first user location information falls within the preset geographic area range for the location indicated by the second user location information, confirm a first user having the first user location information within the preset geographic area range as a first user within the preset range of the location of the second user.

9. The system as described in claim 7 , wherein the memory is further configured to provide the processor with instructions which when executed cause the processor to:

end the data exchange in the event that none of the one or more exchange codes of the one or more first users located within the preset range of the location of the second user matches the authorization code or the authorization code is determined to be invalid.

10. The system as described in claim 7 , wherein:

in the event that the exchange code matching the authorization code exists:

verify the validity of the authorization code; and

in the event that the authorization code is determined to be invalid, end the data exchange; and

in the event that the exchange code that matches the authorization code does not exist:

omit verifying the validity of the authorization code; and

end the data exchange.

11. The system as described in claim 7 , wherein:

the exchange code represents unique data, has a valid time, and is subject to only one use by a first user bound to the exchange code within the valid time; or

the exchange code representing unique random data within a certain range, having a valid time, and being subject to only one use by a first user bound to the exchange code within the valid time.

12. A system for data communication over a network, comprising:

a processor; and

a memory coupled with the processor, wherein the memory is configured to provide the processor with instructions which when executed cause the processor to:

identify one or more first users located within a preset range of a location of a second user based on second user location information and first user location information;

compare an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user

verify validity of the authorization code;

in the event that, among the one or more exchange codes of the one or more first users within a definite range of location of the second user, an exchange code matching the authorization code exists, and the authorization code is determined to be valid:

establish a data exchange channel over a communications network between the second user and the first user corresponding to the exchange code matched with the authorization code; and

perform a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code matched with the authorization code, wherein the authorization code is created based on the exchange code pre-allocated to the first user; and

in the event that an exchange code matching the authorization code does not exist or the authorization code is determined to be invalid, refuse a data exchange between the second user and the first user.

13. A computer program product for data communication over a network, the computer program product being embodied in a tangible non-transitory computer readable storage medium and comprising computer instructions for:

identifying one or more first users located within a preset range of a location of a second user based on second user location information and first user location information;

comparing an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user;

verifying validity of the authorization code;

in the event that, among the one or more exchange codes of the one or more first users within a definite range of the location of the second user, an exchange code matching the authorization code exists, and the authorization code is determined to be valid:

establishing a data exchange channel over a communications network between the second user and a first user corresponding to the exchange code matched with the authorization code; and

performing a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code matched with the authorization code, wherein the authorization code in the data request of the second user is created based on the exchange code pre-allocated to the first user; and

in the event that an exchange code matching the authorization code does not exist or the authorization code is determined to be invalid, refusing a data exchange between the second user and the first user.

14. A computer program product for data communication over a network, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:

identifying one or more first users located within a preset range of a location of a second user, the identification being based on second user location information and first user location information;

comparing an authorization code in a data request received from the second user with one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user;

verifying validity of the authorization code, comprising:

comparing an upload time for the authorization code with a cut-off time of an exchange code in the one or more exchange codes that matches the authorization code; and

in the event that the upload time of the authorization code is less than or equal to the cut-off time, determining the authorization code to be valid;

in the event that, among the one or more exchange codes pre-allocated to the one or more first users who are located within the preset range of the location of the second user, an exchange code that matches the authorization code exists, and the authorization code is determined to be valid:

establishing a data exchange channel over a communications network between the second user and one of the one or more first users pre-allocated with the exchange code matched with the authorization code; and

performing a data exchange over the data exchange channel between the second user and the first user corresponding to the exchange code that matches the authorization code; and

in the event that an exchange code that matches the authorization code does not exist or the authorization code is determined to be invalid, refusing a data exchange between the second user and the first user.