SoupServer

## SoupServer SoupServer — HTTP server |

## Synopsis

    #include <libsoup/soup.h>

                        SoupServer;
    SoupServer *        soup_server_new                     (const char *optname1,
                                                             ...);
    gboolean            soup_server_is_https                (SoupServer *server);
    guint               soup_server_get_port                (SoupServer *server);
    SoupSocket *        soup_server_get_listener            (SoupServer *server);
    void                soup_server_run                     (SoupServer *server);
    void                soup_server_run_async               (SoupServer *server);
    void                soup_server_quit                    (SoupServer *server);
    GMainContext *      soup_server_get_async_context       (SoupServer *server);

    void                (*SoupServerCallback)               (SoupServer *server,
                                                             SoupMessage *msg,
                                                             const char *path,
                                                             GHashTable *query,
                                                             SoupClientContext *client,
                                                             gpointer user_data);
    void                soup_server_add_handler             (SoupServer *server,
                                                             const char *path,
                                                             SoupServerCallback callback,
                                                             gpointer user_data,
                                                             GDestroyNotify destroy);
    void                soup_server_remove_handler          (SoupServer *server,
                                                             const char *path);

    typedef             SoupClientContext;
    SoupSocket *        soup_client_context_get_socket      (SoupClientContext *client);
    SoupAddress *       soup_client_context_get_address     (SoupClientContext *client);
    const char *        soup_client_context_get_host        (SoupClientContext *client);
    SoupAuthDomain *    soup_client_context_get_auth_domain (SoupClientContext *client);
    const char *        soup_client_context_get_auth_user   (SoupClientContext *client);

    void                soup_server_add_auth_domain         (SoupServer *server,
                                                             SoupAuthDomain *auth_domain);
    void                soup_server_remove_auth_domain      (SoupServer *server,
                                                             SoupAuthDomain *auth_domain);

    void                soup_server_pause_message           (SoupServer *server,
                                                             SoupMessage *msg);
    void                soup_server_unpause_message         (SoupServer *server,
                                                             SoupMessage *msg);

    #define             SOUP_SERVER_PORT
    #define             SOUP_SERVER_INTERFACE
    #define             SOUP_SERVER_SSL_CERT_FILE
    #define             SOUP_SERVER_SSL_KEY_FILE
    #define             SOUP_SERVER_ASYNC_CONTEXT
    #define             SOUP_SERVER_RAW_PATHS
    #define             SOUP_SERVER_SERVER_HEADER

## Object Hierarchy

      GObject
       +----SoupServer

      GBoxed
       +----SoupClientContext

## Properties

      "async-context"            gpointer              : Read / Write / Construct Only
      "interface"                SoupAddress*          : Read / Write / Construct Only
      "port"                     guint                 : Read / Write / Construct Only
      "raw-paths"                gboolean              : Read / Write / Construct Only
      "server-header"            gchar*                : Read / Write / Construct
      "ssl-cert-file"            gchar*                : Read / Write / Construct Only
      "ssl-key-file"             gchar*                : Read / Write / Construct Only

## Signals

      "request-aborted"                                : Run First
      "request-finished"                               : Run First
      "request-read"                                   : Run First
      "request-started"                                : Run First

## Description

SoupServer implements a simple HTTP server.

To begin, create a server using `soup_server_new()`. Add at least one handler by calling `soup_server_add_handler()`; the handler will be called to process any requests underneath the path passed to `soup_server_add_handler()`. (If you want all requests to go to the same handler, just pass "/" (or `NULL`) for the path.) Any request that does not match any handler will automatically be returned to the client with a 404 (Not Found) status.

If you want to handle the special "*" URI (eg, "OPTIONS *"), you must explicitly register a handler for "*"; the default handler will not be used for that case.

To add authentication to some or all paths, create an appropriate SoupAuthDomain (qv), and add it to the server via `soup_server_add_auth_domain()`. (As with handlers, you must explicitly add "*" to an auth domain if you want it to be covered.)

Additional processing options are available via SoupServer's signals; Connect to "request-started" to be notified every time a new request is being processed. (This gives you a chance to connect to the SoupMessage "got-" signals in case you want to do processing before the body has been fully read.)

Once the server is set up, start it processing connections by calling `soup_server_run_async()` or `soup_server_run()`. SoupServer runs via the glib main loop; if you need to have a server that runs in another thread (or merely isn't bound to the default main loop), create a GMainContext for it to use, and set that via the SOUP_SERVER_ASYNC_CONTEXT property.

## Details

### SoupServer

    typedef struct _SoupServer SoupServer;

### soup_server_new ()

    SoupServer *        soup_server_new                     (const char *optname1,
                                                             ...);

Creates a new SoupServer.

`optname1` : | name of first property to set
`...` : | value of `optname1`, followed by additional property/value pairs
Returns : | a new SoupServer

### soup_server_is_https ()

    gboolean            soup_server_is_https                (SoupServer *server);

Checks whether `server` is running plain http or https.

In order for a server to run https, you must set the `SOUP_SERVER_SSL_CERT_FILE` and `SOUP_SERVER_SSL_KEY_FILE` properties to provide it with an SSL certificate to use.

`server` : | a SoupServer
Returns : | `TRUE` if `server` is serving https.

### soup_server_get_port ()

    guint               soup_server_get_port                (SoupServer *server);

Gets the TCP port that `server` is listening on. This is most useful when you did not request a specific port (or explicitly requested `SOUP_ADDRESS_ANY_PORT`).

`server` : | a SoupServer
Returns : | the port `server` is listening on.

### soup_server_get_listener ()

    SoupSocket *        soup_server_get_listener            (SoupServer *server);

Gets `server`'s listening socket. You should treat this as read-only; writing to it or modifiying it may cause `server` to malfunction.

`server` : | a SoupServer
Returns : | the listening socket. [transfer none]

### soup_server_run ()

    void                soup_server_run                     (SoupServer *server);

Starts `server`, causing it to listen for and process incoming connections. Unlike `soup_server_run_async()`, this creates a GMainLoop and runs it, and it will not return until someone calls `soup_server_quit()` to stop the server.

`server` : | a SoupServer

### soup_server_run_async ()

    void                soup_server_run_async               (SoupServer *server);

Starts `server`, causing it to listen for and process incoming connections.

The server actually runs in `server`'s GMainContext. It will not actually perform any processing unless the appropriate main loop is running. In the simple case where you did not set the server's `SOUP_SERVER_ASYNC_CONTEXT` property, this means the server will run whenever the glib main loop is running.

`server` : | a SoupServer

### soup_server_quit ()

    void                soup_server_quit                    (SoupServer *server);

Stops processing for `server`. Call this to clean up after `soup_server_run_async()`, or to terminate a call to `soup_server_run()`.

`server` is still in a working state after this call; you can start and stop a server as many times as you want.

`server` : | a SoupServer

### soup_server_get_async_context ()

    GMainContext *      soup_server_get_async_context       (SoupServer *server);

Gets `server`'s async_context. This does not add a ref to the context, so you will need to ref it yourself if you want it to outlive its server.

`server` : | a SoupServer
Returns : | `server`'s GMainContext, which may be `NULL`. [transfer none]

### SoupServerCallback ()

    void                (*SoupServerCallback)               (SoupServer *server,
                                                             SoupMessage *msg,
                                                             const char *path,
                                                             GHashTable *query,
                                                             SoupClientContext *client,
                                                             gpointer user_data);

A callback used to handle requests to a SoupServer. The callback will be invoked after receiving the request body; `msg`'s `method`, `request_headers`, and `request_body` fields will be filled in.

`path` and `query` contain the likewise-named components of the Request-URI, subject to certain assumptions. By default, SoupServer decodes all percent-encoding in the URI path, such that "/foo%2Fbar" is treated the same as "/foo/bar". If your server is serving resources in some non-POSIX-filesystem namespace, you may want to distinguish those as two distinct paths. In that case, you can set the `SOUP_SERVER_RAW_PATHS` property when creating the SoupServer, and it will leave those characters undecoded. (You may want to call `soup_uri_normalize()` to decode any percent-encoded characters that you aren't handling specially.)

`query` contains the query component of the Request-URI parsed according to the rules for HTML form handling. Although this is the only commonly-used query string format in HTTP, there is nothing that actually requires that HTTP URIs use that format; if your server needs to use some other format, you can just ignore `query`, and call `soup_message_get_uri()` and parse the URI's query field yourself.

After determining what to do with the request, the callback must at a minimum call `soup_message_set_status()` (or `soup_message_set_status_full()`) on `msg` to set the response status code. Additionally, it may set response headers and/or fill in the response body.

If the callback cannot fully fill in the response before returning (eg, if it needs to wait for information from a database, or another network server), it should call `soup_server_pause_message()` to tell SoupServer to not send the response right away. When the response is ready, call `soup_server_unpause_message()` to cause it to be sent.

To send the response body a bit at a time using "chunked" encoding, first call `soup_message_headers_set_encoding()` to set `SOUP_ENCODING_CHUNKED` on the `response_headers`. Then call `soup_message_body_append()` (or `soup_message_body_append_buffer()`) to append each chunk as it becomes ready, and `soup_server_unpause_message()` to make sure it's running. (The server will automatically pause the message if it is using chunked encoding but no more chunks are available.) When you are done, call `soup_message_body_complete()` to indicate that no more chunks are coming.

`server` : | the SoupServer
`msg` : | the message being processed
`path` : | the path component of `msg`'s Request-URI
`query` : | the parsed query component of `msg`'s Request-URI. [element-type utf8 utf8][allow-none]
`client` : | additional contextual information about the client
`user_data` : | the data passed to `soup_server_add_handler`

### soup_server_add_handler ()

    void                soup_server_add_handler             (SoupServer *server,
                                                             const char *path,
                                                             SoupServerCallback callback,
                                                             gpointer user_data,
                                                             GDestroyNotify destroy);

Adds a handler to `server` for requests under `path`. See the documentation for SoupServerCallback for information about how callbacks should behave.

If `path` is `NULL` or "/", then this will be the default handler for all requests that don't have a more specific handler. Note though that if you want to handle requests to the special "*" URI, you must explicitly register a handler for "*"; the default handler will not be used for that case.

`server` : | a SoupServer
`path` : | the toplevel path for the handler. [allow-none]
`callback` : | callback to invoke for requests under `path`
`user_data` : | data for `callback`
`destroy` : | destroy notifier to free `user_data`

### soup_server_remove_handler ()

    void                soup_server_remove_handler          (SoupServer *server,
                                                             const char *path);

Removes the handler registered at `path`.

`server` : | a SoupServer
`path` : | the toplevel path for the handler

### SoupClientContext

    typedef struct SoupClientContext SoupClientContext;

A SoupClientContext provides additional information about the client making a particular request. In particular, you can use `soup_client_context_get_auth_domain()` and `soup_client_context_get_auth_user()` to determine if HTTP authentication was used successfully.

`soup_client_context_get_address()` and/or `soup_client_context_get_host()` can be used to get information for logging or debugging purposes. `soup_client_context_get_socket()` may also be of use in some situations (eg, tracking when multiple requests are made on the same connection).

### soup_client_context_get_socket ()

    SoupSocket *        soup_client_context_get_socket      (SoupClientContext *client);

Retrieves the SoupSocket that `client` is associated with.

If you are using this method to observe when multiple requests are made on the same persistent HTTP connection (eg, as the ntlm-test test program does), you will need to pay attention to socket destruction as well (either by using weak references, or by connecting to the "disconnected" signal), so that you do not get fooled when the allocator reuses the memory address of a previously-destroyed socket to represent a new socket.

`client` : | a SoupClientContext
Returns : | the SoupSocket that `client` is associated with. [transfer none]

### soup_client_context_get_address ()

    SoupAddress *       soup_client_context_get_address     (SoupClientContext *client);

Retrieves the SoupAddress associated with the remote end of a connection.

`client` : | a SoupClientContext
Returns : | the SoupAddress associated with the remote end of a connection. [transfer none]

### soup_client_context_get_host ()

    const char *        soup_client_context_get_host        (SoupClientContext *client);

Retrieves the IP address associated with the remote end of a connection. (If you want the actual hostname, you'll have to call `soup_client_context_get_address()` and then call the appropriate SoupAddress method to resolve it.)

`client` : | a SoupClientContext
Returns : | the IP address associated with the remote end of a connection.

### soup_client_context_get_auth_domain ()

    SoupAuthDomain *    soup_client_context_get_auth_domain (SoupClientContext *client);

Checks whether the request associated with `client` has been authenticated, and if so returns the SoupAuthDomain that authenticated it.

`client` : | a SoupClientContext
Returns : | a SoupAuthDomain, or `NULL` if the request was not authenticated. [transfer none][allow-none]

### soup_client_context_get_auth_user ()

    const char *        soup_client_context_get_auth_user   (SoupClientContext *client);

Checks whether the request associated with `client` has been authenticated, and if so returns the username that the client authenticated as.

`client` : | a SoupClientContext
Returns : | the authenticated-as user, or `NULL` if the request was not authenticated.

### soup_server_add_auth_domain ()

    void                soup_server_add_auth_domain         (SoupServer *server,
                                                             SoupAuthDomain *auth_domain);

Adds an authentication domain to `server`. Each auth domain will have the chance to require authentication for each request that comes in; normally auth domains will require authentication for requests on certain paths that they have been set up to watch, or that meet other criteria set by the caller. If an auth domain determines that a request requires authentication (and the request doesn't contain authentication), `server` will automatically reject the request with an appropriate status (401 Unauthorized or 407 Proxy Authentication Required). If the request used the "100-continue" Expectation, `server` will reject it before the request body is sent.

`server` : | a SoupServer
`auth_domain` : | a SoupAuthDomain

### soup_server_remove_auth_domain ()

    void                soup_server_remove_auth_domain      (SoupServer *server,
                                                             SoupAuthDomain *auth_domain);

Removes `auth_domain` from `server`.

`server` : | a SoupServer
`auth_domain` : | a SoupAuthDomain

### soup_server_pause_message ()

    void                soup_server_pause_message           (SoupServer *server,
                                                             SoupMessage *msg);

Pauses I/O on `msg`. This can be used when you need to return from the server handler without having the full response ready yet. Use `soup_server_unpause_message()` to resume I/O.

`server` : | a SoupServer
`msg` : | a SoupMessage associated with `server`.

### soup_server_unpause_message ()

    void                soup_server_unpause_message         (SoupServer *server,
                                                             SoupMessage *msg);

Resumes I/O on `msg`. Use this to resume after calling `soup_server_pause_message()`, or after adding a new chunk to a chunked response.

I/O won't actually resume until you return to the main loop.

`server` : | a SoupServer
`msg` : | a SoupMessage associated with `server`.

### SOUP_SERVER_PORT

    #define SOUP_SERVER_PORT          "port"

Alias for the "port" property. (The port the server listens on.)

### SOUP_SERVER_INTERFACE

    #define SOUP_SERVER_INTERFACE     "interface"

Alias for the "interface" property. (The address of the network interface the server listens on.)

### SOUP_SERVER_SSL_CERT_FILE

    #define SOUP_SERVER_SSL_CERT_FILE "ssl-cert-file"

Alias for the "ssl-cert-file" property. (The file containing the SSL certificate for the server.)

### SOUP_SERVER_SSL_KEY_FILE

    #define SOUP_SERVER_SSL_KEY_FILE  "ssl-key-file"

Alias for the "ssl-key-file" property. (The file containing the SSL certificate key for the server.)

### SOUP_SERVER_ASYNC_CONTEXT

    #define SOUP_SERVER_ASYNC_CONTEXT "async-context"

Alias for the "async-context" property. (The server's GMainContext.)

### SOUP_SERVER_RAW_PATHS

    #define SOUP_SERVER_RAW_PATHS     "raw-paths"

Alias for the "raw-paths" property. (If `TRUE`, percent-encoding in the Request-URI path will not be automatically decoded.)

### SOUP_SERVER_SERVER_HEADER

    #define SOUP_SERVER_SERVER_HEADER "server-header"

Alias for the "server-header" property, qv.

## Property Details

### The `"async-context"` property

      "async-context"            gpointer              : Read / Write / Construct Only

The GMainContext to dispatch async I/O in.

### The `"interface"` property

      "interface"                SoupAddress*          : Read / Write / Construct Only

Address of interface to listen on.

### The `"port"` property

      "port"                     guint                 : Read / Write / Construct Only

Port to listen on.

Allowed values: <= 65536

Default value: 0

### The `"raw-paths"` property

      "raw-paths"                gboolean              : Read / Write / Construct Only

If %TRUE, percent-encoding in the Request-URI path will not be automatically decoded.

Default value: FALSE

### The `"server-header"` property

      "server-header"            gchar*                : Read / Write / Construct

If non-`NULL`, the value to use for the "Server" header on SoupMessages processed by this server.

The Server header is the server equivalent of the User-Agent header, and provides information about the server and its components. It contains a list of one or more product tokens, separated by whitespace, with the most significant product token coming first. The tokens must be brief, ASCII, and mostly alphanumeric (although "-", "_", and "." are also allowed), and may optionally include a "/" followed by a version string. You may also put comments, enclosed in parentheses, between or after the tokens.

Some HTTP server implementations intentionally do not use version numbers in their Server header, so that installations running older versions of the server don't end up advertising their vulnerability to specific security holes.

As with "user_agent", if you set a `server_header` property that has trailing whitespace, SoupServer will append its own product token (eg, "`libsoup/2.3.2`") to the end of the header for you.

Default value: NULL

### The `"ssl-cert-file"` property

      "ssl-cert-file"            gchar*                : Read / Write / Construct Only

File containing server SSL certificate.

Default value: NULL

### The `"ssl-key-file"` property

      "ssl-key-file"             gchar*                : Read / Write / Construct Only

File containing server SSL key.

Default value: NULL

## Signal Details

### The `"request-aborted"` signal

    void                user_function                      (SoupServer        *server,
                                                            SoupMessage       *message,
                                                            SoupClientContext *client,
                                                            gpointer           user_data)      : Run First

Emitted when processing has failed for a message; this could mean either that it could not be read (if "request_read" has not been emitted for it yet), or that the response could not be written back (if "request_read" has been emitted but "request_finished" has not been).

`message` is in an undefined state when this signal is emitted; the signal exists primarily to allow the server to free any state that it may have allocated in "request_started".

`server` : | the server
`message` : | the message
`client` : | the client context
`user_data` : | user data set when the signal handler was connected.

### The `"request-finished"` signal

    void                user_function                      (SoupServer        *server,
                                                            SoupMessage       *message,
                                                            SoupClientContext *client,
                                                            gpointer           user_data)      : Run First

Emitted when the server has finished writing a response to a request.

`server` : | the server
`message` : | the message
`client` : | the client context
`user_data` : | user data set when the signal handler was connected.

### The `"request-read"` signal

    void                user_function                      (SoupServer        *server,
                                                            SoupMessage       *message,
                                                            SoupClientContext *client,
                                                            gpointer           user_data)      : Run First

Emitted when the server has successfully read a request. `message` will have all of its request-side information filled in, and if the message was authenticated, `client` will have information about that. This signal is emitted before any handlers are called for the message, and if it sets the message's status_code, then normal handler processing will be skipped.

`server` : | the server
`message` : | the message
`client` : | the client context
`user_data` : | user data set when the signal handler was connected.

### The `"request-started"` signal

    void                user_function                      (SoupServer        *server,
                                                            SoupMessage       *message,
                                                            SoupClientContext *client,
                                                            gpointer           user_data)      : Run First

Emitted when the server has started reading a new request. `message` will be completely blank; not even the Request-Line will have been read yet. About the only thing you can usefully do with it is connect to its signals.

If the request is read successfully, this will eventually be followed by a "request_read" signal. If a response is then sent, the request processing will end with a "request_finished" signal. If a network error occurs, the processing will instead end with "request_aborted".

`server` : | the server
`message` : | the new message
`client` : | the client context
`user_data` : | user data set when the signal handler was connected.

## See Also

SoupAuthDomain