### Class

# Soup Logger

since: 3.0

#### Description [src]

    final class Soup.Logger : GObject.Object
      implements Soup.SessionFeature {
      /* No available fields */
    }

Debug logging support

`SoupLogger` watches a `SoupSession` and logs the HTTP traffic that it generates, for debugging purposes. Many applications use an environment variable to determine whether or not to use `SoupLogger`, and to determine the amount of debugging output.

To use `SoupLogger`, first create a logger with `soup_logger_new()`, optionally configure it with `soup_logger_set_request_filter()`, `soup_logger_set_response_filter()`, and `soup_logger_set_printer()`, and then attach it to a session (or multiple sessions) with `soup_session_add_feature()`.

By default, the debugging output is sent to `stdout`, and looks something like:

    > POST /unauth HTTP/1.1
    > Soup-Debug-Timestamp: 1200171744
    > Soup-Debug: SoupSession 1 (0x612190), SoupMessage 1 (0x617000), GSocket 1 (0x612220)
    > Host: localhost
    > Content-Type: text/plain
    > Connection: close

    &lt; HTTP/1.1 201 Created
    &lt; Soup-Debug-Timestamp: 1200171744
    &lt; Soup-Debug: SoupMessage 1 (0x617000)
    &lt; Date: Sun, 12 Jan 2008 21:02:24 GMT
    &lt; Content-Length: 0

The `Soup-Debug-Timestamp` line gives the time (as a `time_t`) when the request was sent, or the response fully received.

The `Soup-Debug` line gives further debugging information about the `SoupSession`, `SoupMessage`, and `GSocket` involved; the hex numbers are the addresses of the objects in question (which may be useful if you are running in a debugger). The decimal IDs are simply counters that uniquely identify objects across the lifetime of the `SoupLogger`. In particular, this can be used to identify when multiple messages are sent across the same connection.

Currently, the request half of the message is logged just before the first byte of the request gets written to the network (from the `SoupMessage::starting` signal).

The response is logged just after the last byte of the response body is read from the network (from the `SoupMessage::got-body` or `SoupMessage::got-informational` signal), which means that the `SoupMessage::got-headers` signal, and anything triggered off it (such as `SoupMessage::authenticate`) will be emitted before the response headers are actually logged.

If the response doesn’t happen to trigger the `SoupMessage::got-body` nor `SoupMessage::got-informational` signals due to, for example, a cancellation before receiving the last byte of the response body, the response will still be logged on the event of the `SoupMessage::finished` signal.

Available since: 3.0

#### Ancestors

- GObject

#### Implements

- SoupSessionFeature

#### Constructors

###### soup_logger_new

Creates a new `SoupLogger` with the given debug level.

since: 3.0

#### Instance methods

###### soup_logger_get_max_body_size

Get the maximum body size for `logger`.

since: 3.0

###### soup_logger_set_max_body_size

Sets the maximum body size for `logger` (-1 means no limit).

since: 3.0

###### soup_logger_set_printer

Sets up an alternate log printing routine, if you don’t want the log to go to `stdout`.

since: 3.0

###### soup_logger_set_request_filter

Sets up a filter to determine the log level for a given request.

since: 3.0

###### soup_logger_set_response_filter

Sets up a filter to determine the log level for a given response.

since: 3.0

##### Methods inherited from GObject (43)

Please see GObject for a full list of methods.

#### Properties

###### Soup.Logger:level

The level of logging output.

since: 3.0

###### Soup.Logger:max-body-size

If `SoupLogger:level` is `SOUP_LOGGER_LOG_BODY`, this gives the maximum number of bytes of the body that will be logged. (-1 means “no limit”.)

since: 3.0

#### Signals

##### Signals inherited from GObject (1)

###### GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

since: 2.0

#### Class structure

    struct SoupLoggerClass {
      GObjectClass parent_class;

    }

No description available.

###### Class members

`parent_class: GObjectClass`
  No description available.