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123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
#ifndef EL__NETWORK_CONNECTION_H
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#define EL__NETWORK_CONNECTION_H
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#include "cache/cache.h"
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#include "encoding/encoding.h"
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#include "main/timer.h" /* timer_id_T */
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#include "network/state.h"
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#include "util/lists.h"
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#include <stdio.h>
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struct download;
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struct socket;
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struct uri;
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struct connection {
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LIST_HEAD(struct connection);
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LIST_OF(struct download) downloads;
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struct progress *progress;
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/** Progress of sending the request and attached files to the
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* server. This happens before any download.
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*
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* Currently, ELinks supports file uploads only in HTTP and
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* local CGI. Therefore, upload_stat_timer() in connection.c
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* assumes that #info points to struct http_connection_info
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* whenever @c http_upload_progress is not NULL. */
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struct progress *http_upload_progress;
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/* If no proxy is used uri and proxied_uri are the same. */
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struct uri *uri;
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struct uri *proxied_uri;
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struct uri *referrer;
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/* Cache information. */
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enum cache_mode cache_mode;
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struct cache_entry *cached;
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off_t from; /* Position for new data in the cache entry. */
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off_t received; /* The number of received bytes. */
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off_t est_length; /* Estimated number of bytes to transfer. */
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enum stream_encoding content_encoding;
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struct stream_encoded *stream;
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/* Called if non NULL when shutting down a connection. */
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void (*done)(struct connection *);
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unsigned int id;
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struct connection_state state;
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struct connection_state prev_error;
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/* The communication socket with the other side. */
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struct socket *socket;
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/* The data socket. It is used, when @socket is used for the control,
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* and the actual data is transmitted through a different channel. */
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/* The only users now are FTP, FSP, and SMB. */
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struct socket *data_socket;
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int tries;
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timer_id_T timer;
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unsigned int running:1;
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unsigned int unrestartable:1;
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unsigned int detached:1;
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unsigned int cgi:1;
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/* Each document is downloaded with some priority. When downloading a
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* document, the existing connections are checked to see if a
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* connection to the host already exists before creating a new one. If
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* it finds out that something had that idea earlier and connection for
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* download of the very same URL is active already, it just attaches
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* the struct download it got to the connection, _and_ updates its @pri
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* array by the priority it has thus, sum of values in all fields of
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* @pri is also kinda refcount of the connection. */
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int pri[PRIORITIES];
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/* Private protocol specific info. If non-NULL it is free()d when
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* stopping the connection. */
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void *info;
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};
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int register_check_queue(void);
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int get_connections_count(void);
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int get_keepalive_connections_count(void);
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int get_connections_connecting_count(void);
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int get_connections_transfering_count(void);
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void set_connection_state(struct connection *, struct connection_state);
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int has_keepalive_connection(struct connection *);
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void add_keepalive_connection(struct connection *conn, long timeout_in_seconds,
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void (*done)(struct connection *));
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void abort_connection(struct connection *, struct connection_state);
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void retry_connection(struct connection *, struct connection_state);
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void cancel_download(struct download *download, int interrupt);
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void move_download(struct download *old, struct download *new_,
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enum connection_priority newpri);
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void detach_connection(struct download *, off_t);
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void abort_all_connections(void);
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void abort_background_connections(void);
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void set_connection_timeout(struct connection *);
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void shutdown_connection_stream(struct connection *conn);
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/* Initiates a connection to get the given @uri. */
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/* Note that stat's data _MUST_ be struct file_download * if start > 0! Yes,
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* that should be probably something else than data, but... ;-) */
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/* Returns 0 on success and -1 on failure. */
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int load_uri(struct uri *uri, struct uri *referrer, struct download *download,
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enum connection_priority pri, enum cache_mode cache_mode, off_t start);
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int is_entry_used(struct cache_entry *cached);
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#endif
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