Patent ID: 7742478
Filing Date: 2010-06-22
Classification: H04L

Abstract:
1. A reply communication apparatus which conforms to a protocol to return a reply electronic document in reply to a request electronic document sent from a communication apparatus, comprising: a protocol electronic document determining circuit to determine whether a protocol electronic document is mounted on an electronic document sent through a transmitting path and arriving at a port of the apparatus; a request electronic document determining circuit to, when it is determined that the protocol electronic document is mounted on the electronic document, determine whether the protocol electronic document comprises a request electronic document; a self-apparatus destination determining circuit to, when it is determined that the protocol electronic document comprises the request electronic document, determine whether the request electronic document is addressed to the self-apparatus; and an electronic document replacing circuit to, when it is determined that the request electronic document is addressed to the self-apparatus, overwrite response contents on the request electronic document to replace the request electronic document with a reply electronic document, wherein the protocol electronic document determining circuit, the request electronic determining circuit, the self-apparatus destination determining circuit, and the electronic document replacing circuit comprises a protocol reply procedure hardware, wherein the protocol electronic determining circuit comprises an internal header adding circuit to add an internal header to each arriving frame to produce an internal electronic document, and a protocol electronic document receiving marking circuit to set a protocol electronic document receiving flag of the internal header when the electronic document comprises a protocol electronic document; wherein the request electronic document determining circuit comprises a request electronic document receiving marking circuit to set a request electronic document receiving flag of the internal header when the request electronic document comprises a request electronic document; wherein the self-apparatus destination determining circuit comprises a protocol processing execution designating marking circuit to set a protocol processing execution designating flag of the internal header when the request electronic document is addressed to the self-apparatus, wherein the electronic document replacing circuit comprises an address overwriting circuit to, when the protocol electronic document receiving flag, the request electronic document receiving flag and the protocol processing execution designating flag are set in the internal header of the internal electronic document, replace the destination address field in the request electronic document of the internal electronic document with a source address field, and overwrite an address of the self-apparatus on the source address field, and wherein the apparatus further comprises an internal header deleting circuit to delete the internal header from the internal electronic document to produce a transmitting electronic document.