.. index:: single: smtp_process_transport
.. _smtp_process_transport/0:

.. rst-class:: right

**object**

``smtp_process_transport``
==========================

Process-backed TLS transport support for the SMTP client.

| **Availability:** 
|    ``logtalk_load(smtp(loader))``

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-09-13

| **Compilation flags:**
|    ``static, context_switching_calls``


| **Uses:**
|    :ref:`list <list/0>`
|    :ref:`os <os/0>`
|    :ref:`process <process/0>`
|    :ref:`reader <reader/0>`
|    :ref:`user <user/0>`

| **Remarks:**
|    (none)

| **Inherited public predicates:**
|    (none)

.. contents::
   :local:
   :backlinks: top

Public predicates
-----------------

.. index:: open/8
.. _smtp_process_transport/0::open/8:

``open/8``
^^^^^^^^^^

Opens an implicit TLS or STARTTLS SMTP connection using OpenSSL.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``open(Host,Port,Security,Helo,Executable,ServerName,Options,Connection)``
| **Mode and number of proofs:**
|    ``open(+atom,+integer,+atom,+atom,+atom,+atom,+list,--compound)`` - ``one_or_error``


------------

.. index:: streams/3
.. _smtp_process_transport/0::streams/3:

``streams/3``
^^^^^^^^^^^^^

Returns the input and output streams for an open process connection.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``streams(Connection,Input,Output)``
| **Mode and number of proofs:**
|    ``streams(+compound,--stream,--stream)`` - ``one_or_error``


------------

.. index:: failure_details/3
.. _smtp_process_transport/0::failure_details/3:

``failure_details/3``
^^^^^^^^^^^^^^^^^^^^^

Returns the process exit status and standard error output after an OpenSSL connection failure.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``failure_details(Connection,Status,Diagnostic)``
| **Mode and number of proofs:**
|    ``failure_details(+compound,--term,--atom)`` - ``one``


------------

.. index:: close/1
.. _smtp_process_transport/0::close/1:

``close/1``
^^^^^^^^^^^

Closes the streams and terminates the OpenSSL process.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``close(Connection)``
| **Mode and number of proofs:**
|    ``close(+compound)`` - ``one``


------------

Protected predicates
--------------------

(no local declarations; see entity ancestors if any)

Private predicates
------------------

(no local declarations; see entity ancestors if any)

Operators
---------

(none)