![]() Open TFTP client file Prototype UINT nx_tftp_client_file_open( * If status is NX_SUCCESS the TFTP file is closed. Status = nxd_tftp_client_file_close(&my_tftp_client) Threads Example /* Close the previously opened file associated with “my_client”. NX_INVALID_PARAMETERS (0x4D) Invalid non pointer input. NX_SUCCESS (0x00) Successful TFTP file close. Ip_type: Indicate which IP protocol to use. A TFTP Client instance is allowed to have only one file open at a time. This service closes the previously opened file by this TFTP Client instance. */Ĭlose client file Prototype UINT nxd_tftp_client_file_close( * If status is NX_SUCCESS the error code and error string are available. Status = nxd_tftp_client_error_info_get(&my_tftp_client, &error_code, ![]() Threads Example /* Get error information for client. NX_PTR_ERROR (0x16) Invalid TFTP Client pointer. NX_SUCCESS (0x00) Successful TFTP error info get. Tftp_client_ptr: Pointer to previously created TFTP Client instance.Įrror_code: Pointer to destination area for error codeĮrror_string: Pointer to destination for error string A null error string indicates no error is present. In error conditions, the user can view the last error sent by the server. This service returns the last error code received and sets the pointer to the client’s internal error string. ![]() Get client error information Prototype UINT nxd_tftp_client_error_info_get( * If status is NX_SUCCESS the TFTP Client instance was successfully Status = nxd_tftp_client_delete(&my_tftp_client) Threads Example /* Delete a TFTP Client instance. NX_PTR_ERROR (0x16) Invalid pointer input. NX_SUCCESS (0x00) Successful TFTP Client delete. tftp_client_ptr: Pointer to previously created TFTP client instance.This service deletes a previously created TFTP Client instance. * If status is NX_SUCCESS a TFTP Client instance was successfullyĭelete a TFTP Client instance Prototype UINT nxd_tftp_client_delete(NX_TFTP_CLIENT *tftp_client_ptr) ![]() Status = nxd_tftp_client_create(&my_tftp_client, “My TFTP Client”, Initialization and Threads Example /* Create a TFTP Client instance. NX_CALLER_ERROR (0x11) Invalid caller of this service. NX_INVALID_PARAMETERS (0x4D) Invalid non pointer input NX_PTR_ERROR (0x16) Invalid IP, pool, or TFTP pointer. NX_TFTP_NO_ACK_RECEIVED (0x09) Server ACK not received NX_TFTP_INVALID_SERVER_ADDRESS (0x08) Invalid Server IP address received NX_TFTP_INVALID_IP_VERSION (0x0C) Invalid or unsupported IP version Pool_ptr: Pointer to packet pool TFTP Client instance. Ip_ptr: Pointer to previously created IP instance. Tftp_client_name: Name of this TFTP Client instance Tftp_client_ptr: Pointer to TFTP Client control block. In addition, UDP must be enabled for the IP instance prior to calling this service. Subsequently, communication is established via individually assigned port numbers (between 105), which the TFTP server sends to the requesting client in the form of TIDs ( Transfer Identifiers).The application must make certain the supplied IP and packet pool are already created. Unlike its better-known counterpart FTP (File Transfer Protocol), TFTP cannot list directories or permissions via chmod. As a result, it only covers methods for reading/writing files or mail to or from a server. The packet-oriented File Transfer Protocol, which is part of the TCP/IP protocol family, was specially designed to be as small and easy to implement as possible. It is also possible to implement the TFTP based on other protocols. By default, the TFTP protocol is based on the similarly simplified transport protocol UDP (User Datagram Protocol) which enables data to be sent between communication partners without sharing a fixed connection. The current standard was published in RFC 1350 in 1992. The TFTP’s original specification was published in June 1981 in RFC 783. The Trivial File Transfer Protocol, TFTP for short, is a very simple client-server protocol, which manages file transfers in computer networks.
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