# Name

`MPI_Close_port` - Releases the specified network address.

# Syntax

## C Syntax

```c
#include <mpi.h>

int MPI_Close_port(const char *port_name)
```

## Fortran Syntax

```fortran
USE MPI
! or the older form: INCLUDE 'mpif.h'

MPI_CLOSE_PORT(PORT_NAME, IERROR)
    CHARACTER*(*)	PORT_NAME
    INTEGER		IERROR
```

## Fortran 2008 Syntax

```fortran
USE mpi_f08

MPI_Close_port(port_name, ierror)
    CHARACTER(LEN=*), INTENT(IN) :: port_name
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror
```


# Input Parameter

* `port_name` : A port (string).

# Output Parameter

* `IERROR` : Fortran only: Error status (integer).

# Description

`MPI_Close_port` releases the network address represented by `port_name`.

# Errors

Almost all MPI routines return an error value; C routines as the value
of the function and Fortran routines in the last argument.
Before the error value is returned, the current MPI error handler is
called. By default, this error handler aborts the MPI job, except for
I/O function errors. The error handler may be changed with
`MPI_Comm_set_errhandler`; the predefined error handler `MPI_ERRORS_RETURN`
may be used to cause error values to be returned. Note that MPI does not
guarantee that an MPI program can continue past an error.