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elinks/src/network/connection.h
Witold Filipczyk 5dc479386e [xhr] Handle timeout. Also hexify post body
Timeout is silent now.
2022-09-28 21:07:31 +02:00

133 lines
4.1 KiB
C

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