Unified bufferd network I/O

## Unified bufferd network I/O Unified bufferd network I/O — Posix style buffered network input/output. |

## Synopsis

    GnomeVFSSocketBuffer* gnome_vfs_socket_buffer_new
                                                (GnomeVFSSocket *socket);
    GnomeVFSResult gnome_vfs_socket_buffer_destroy
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gboolean close_socket,
                                                 GnomeVFSCancellation *cancellation);
    GnomeVFSResult gnome_vfs_socket_buffer_read (GnomeVFSSocketBuffer *socket_buffer,
                                                 gpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 GnomeVFSFileSize *bytes_read,
                                                 GnomeVFSCancellation *cancellation);
    GnomeVFSResult gnome_vfs_socket_buffer_peekc
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 char *character,
                                                 GnomeVFSCancellation *cancellation);
    GnomeVFSResult gnome_vfs_socket_buffer_write
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gconstpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 GnomeVFSFileSize *bytes_written,
                                                 GnomeVFSCancellation *cancellation);
    GnomeVFSResult gnome_vfs_socket_buffer_flush
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 GnomeVFSCancellation *cancellation);
    GnomeVFSResult gnome_vfs_socket_buffer_read_until
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 gconstpointer boundary,
                                                 GnomeVFSFileSize boundary_len,
                                                 GnomeVFSFileSize *bytes_read,
                                                 gboolean *got_boundary,
                                                 GnomeVFSCancellation *cancellation);

## Description

The GnomeVFSSocketBuffer functions are very similar to the GnomeVFSSocket ones. The only difference is that all input/output is done through an internally managed buffer. This might increase I/O performance as well as give you the possibility to use some convenient functions like gnome_vfs_socket_buffer_peekc and gnome_vfs_socket_buffer_read_until.

You can manually force all internally buffered data to get written with gnome_vfs_socket_buffer_flush.

## Details

### gnome_vfs_socket_buffer_new ()

    GnomeVFSSocketBuffer* gnome_vfs_socket_buffer_new
                                                (GnomeVFSSocket *socket);

Create a socket buffer around `socket`. A buffered socket allows data to be poked at without reading it as it will be buffered. A future read will retrieve the data again.

`socket` : | socket to be buffered
Returns : | a newly allocated GnomeVFSSocketBuffer

### gnome_vfs_socket_buffer_destroy ()

    GnomeVFSResult gnome_vfs_socket_buffer_destroy
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gboolean close_socket,
                                                 GnomeVFSCancellation *cancellation);

Free the socket buffer.

`socket_buffer` : | buffered socket to destroy.
`close_socket` : | if `TRUE` the socket being buffered will be closed too.
`cancellation` : | handle allowing cancellation of the operation.
Returns : | GnomeVFSResult indicating the success of the operation

### gnome_vfs_socket_buffer_read ()

    GnomeVFSResult gnome_vfs_socket_buffer_read (GnomeVFSSocketBuffer *socket_buffer,
                                                 gpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 GnomeVFSFileSize *bytes_read,
                                                 GnomeVFSCancellation *cancellation);

Read `bytes` bytes of data from the `socket` into `socket_buffer`.

`socket_buffer` : | buffered socket to read data from.
`buffer` : | allocated buffer of at least `bytes` bytes to be read into.
`bytes` : | number of bytes to read from `socket` into `socket_buffer`.
`bytes_read` : | pointer to a GnomeVFSFileSize, will contain the number of bytes actually read from the socket on return.
`cancellation` : | handle allowing cancellation of the operation.
Returns : | GnomeVFSResult indicating the success of the operation

### gnome_vfs_socket_buffer_peekc ()

    GnomeVFSResult gnome_vfs_socket_buffer_peekc
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 char *character,
                                                 GnomeVFSCancellation *cancellation);

Peek at the next character in `socket_buffer` without actually reading the character in. The next read will retrieve `c` (as well as any following data if requested).

`socket_buffer` : | the socket buffer to read from.
`character` : | pointer to a char, will contain a character on return from a successful "peek".
`cancellation` : | handle allowing cancellation of the operation.
Returns : | GnomeVFSResult indicating the success of the operation

### gnome_vfs_socket_buffer_write ()

    GnomeVFSResult gnome_vfs_socket_buffer_write
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gconstpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 GnomeVFSFileSize *bytes_written,
                                                 GnomeVFSCancellation *cancellation);

Write `bytes` bytes of data from `buffer` to `socket_buffer`.

`socket_buffer` : | buffered socket to write data to
`buffer` : | data to write to the socket
`bytes` : | number of bytes from `buffer` to write to `socket_buffer`
`bytes_written` : | pointer to a GnomeVFSFileSize, will contain the number of bytes actually written to the socket on return.
`cancellation` : | handle allowing cancellation of the operation
Returns : | GnomeVFSResult indicating the success of the operation

### gnome_vfs_socket_buffer_flush ()

    GnomeVFSResult gnome_vfs_socket_buffer_flush
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 GnomeVFSCancellation *cancellation);

Write all outstanding data to `socket_buffer`.

`socket_buffer` : | buffer to flush
`cancellation` : | handle allowing cancellation of the operation
Returns : | GnomeVFSResult indicating the success of the operation

### gnome_vfs_socket_buffer_read_until ()

    GnomeVFSResult gnome_vfs_socket_buffer_read_until
                                                (GnomeVFSSocketBuffer *socket_buffer,
                                                 gpointer buffer,
                                                 GnomeVFSFileSize bytes,
                                                 gconstpointer boundary,
                                                 GnomeVFSFileSize boundary_len,
                                                 GnomeVFSFileSize *bytes_read,
                                                 gboolean *got_boundary,
                                                 GnomeVFSCancellation *cancellation);

Read up to `bytes` bytes of data from the `socket` into `socket_buffer` until boundary is reached. `got_boundary` will be set accordingly.

Note that if `bytes` is smaller than `boundary_len` there is no way to detected the boundary! So if you want to make sure that every boundary is found (in a loop maybe) asure that `bytes` is at least as big as `boundary_len`.

`socket_buffer` : | buffered socket to read data from.
`buffer` : | allocated buffer of at least `bytes` bytes to be read into.
`bytes` : | maximum number of bytes to read from `socket` into `socket_buffer`.
`boundary` : | the boundary until wich is read.
`boundary_len` : | the length of the boundary.
`bytes_read` : | pointer to a GnomeVFSFileSize, will contain the number of bytes actually read from the socket on return.
`got_boundary` : | pointer to a gboolean which will be `TRUE` if the boundary was found or FALSE otherwise.
`cancellation` : | handle allowing cancellation of the operation.
Returns : | GnomeVFSResult indicating the success of the operation

Since 2.8