POP3c_Connect()

Establishes a TCP connection with the POP3 server.

Files

pop3-c.h/pop3-c.c

Prototype

Arguments

ip_server IP address of the POP3 server to contact.

port TCP port to use. If ‘0’, pre-configured port is used.

secure Desired value for client secure mode.

DEF_ENABLED Client operations will be secured.

DEF_DISABLED Client operations will not be secured.

perr Pointer to a variable that will hold the return error code from this function:

	POP3c_ERR_NONE
	POP3c_ERR_SOCK_OPEN_FAILED
	POP3c_ERR_SOCK_CONN_FAILED
	POP3c_ERR_NEG_RESP
	POP3c_ERR_RX_FAILED

Returned Values

Connected socket ID, if no errors;

-1, otherwise.

Required Configuration

The network security manager MUST be available and enabled to open a secure POP3 connection (i.e: in “net_cfg.h”, NET_SECURE_CFG_EN should be DEF_ENABLED AND NET_CFG_TRANSPORT_LAYER_SEL should be configured for TCP). See µC/TCPIP user manual for more information about the network security manager.

A network security module MUST be included in the project (i.e: µC/SSL) to use the network security manager functionalities.

Notes / Warnings

If anything goes wrong while trying to connect to the server, the socket is closed by calling NetSock_Close(). Hence, all data structures are returned to their original state in case of a failure.

Before opening a secure POP3 connection, a certificate authority MUST be installed to validate the server identity.

Example Usage

See section 3-3 “µ C/POP3 c Example Code”.