FFmpeg
Data Structures | Macros | Functions
network.h File Reference
#include <errno.h>
#include <stdint.h>
#include "config.h"
#include "libavutil/error.h"
#include "os_support.h"
#include "avio.h"
#include "url.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>

Go to the source code of this file.

Data Structures

struct  sockaddr_storage
 
union  sockaddr_union
 
struct  addrinfo
 

Macros

#define ff_neterrno()   AVERROR(errno)
 
#define MSG_NOSIGNAL   0
 
#define EAI_AGAIN   2
 
#define EAI_BADFLAGS   3
 
#define EAI_FAIL   4
 
#define EAI_FAMILY   5
 
#define EAI_MEMORY   6
 
#define EAI_NODATA   7
 
#define EAI_NONAME   8
 
#define EAI_SERVICE   9
 
#define EAI_SOCKTYPE   10
 
#define AI_PASSIVE   1
 
#define AI_CANONNAME   2
 
#define AI_NUMERICHOST   4
 
#define NI_NOFQDN   1
 
#define NI_NUMERICHOST   2
 
#define NI_NAMERQD   4
 
#define NI_NUMERICSERV   8
 
#define NI_DGRAM   16
 
#define getaddrinfo   ff_getaddrinfo
 
#define freeaddrinfo   ff_freeaddrinfo
 
#define getnameinfo   ff_getnameinfo
 
#define gai_strerror   ff_gai_strerror
 
#define INADDR_LOOPBACK   0x7f000001
 
#define INET_ADDRSTRLEN   16
 
#define INET6_ADDRSTRLEN   INET_ADDRSTRLEN
 
#define IN_MULTICAST(a)   ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
 
#define IN6_IS_ADDR_MULTICAST(a)   (((uint8_t *) (a))[0] == 0xff)
 
#define POLLING_TIME   100
 

Functions

int ff_socket_nonblock (int socket, int enable)
 
int ff_network_init (void)
 
void ff_network_close (void)
 
int ff_tls_init (void)
 
void ff_tls_deinit (void)
 
int ff_network_wait_fd (int fd, int write)
 
int ff_network_wait_fd_timeout (int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb)
 This works similarly to ff_network_wait_fd, but waits up to 'timeout' microseconds Uses ff_network_wait_fd in a loop. More...
 
int ff_network_sleep_interruptible (int64_t timeout, AVIOInterruptCB *int_cb)
 Waits for up to 'timeout' microseconds. More...
 
int ff_getaddrinfo (const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res)
 
void ff_freeaddrinfo (struct addrinfo *res)
 
int ff_getnameinfo (const struct sockaddr *sa, int salen, char *host, int hostlen, char *serv, int servlen, int flags)
 
const char * ff_gai_strerror (int ecode)
 
int ff_is_multicast_address (struct sockaddr *addr)
 
int ff_listen_bind (int fd, const struct sockaddr *addr, socklen_t addrlen, int timeout, URLContext *h)
 Bind to a file descriptor and poll for a connection. More...
 
int ff_listen (int fd, const struct sockaddr *addr, socklen_t addrlen)
 Bind to a file descriptor to an address without accepting connections. More...
 
int ff_accept (int fd, int timeout, URLContext *h)
 Poll for a single connection on the passed file descriptor. More...
 
int ff_listen_connect (int fd, const struct sockaddr *addr, socklen_t addrlen, int timeout, URLContext *h, int will_try_next)
 Connect to a file descriptor and poll for result. More...
 
int ff_http_match_no_proxy (const char *no_proxy, const char *hostname)
 
int ff_socket (int domain, int type, int protocol)
 
void ff_log_net_error (void *ctx, int level, const char *prefix)
 
int ff_connect_parallel (struct addrinfo *addrs, int timeout_ms_per_address, int parallel, URLContext *h, int *fd, void(*customize_fd)(void *, int), void *customize_ctx)
 Connect to any of the given addrinfo addresses, with multiple attempts running in parallel. More...
 

Macro Definition Documentation

#define ff_neterrno ( )    AVERROR(errno)
#define MSG_NOSIGNAL   0

Definition at line 130 of file network.h.

Referenced by ff_sctp_send(), sctp_write(), tcp_write(), and unix_write().

#define EAI_AGAIN   2

Definition at line 148 of file network.h.

#define EAI_BADFLAGS   3

Definition at line 151 of file network.h.

#define EAI_FAIL   4

Definition at line 154 of file network.h.

#define EAI_FAMILY   5

Definition at line 157 of file network.h.

#define EAI_MEMORY   6

Definition at line 160 of file network.h.

#define EAI_NODATA   7

Definition at line 163 of file network.h.

#define EAI_NONAME   8

Definition at line 166 of file network.h.

#define EAI_SERVICE   9

Definition at line 169 of file network.h.

#define EAI_SOCKTYPE   10

Definition at line 172 of file network.h.

#define AI_PASSIVE   1

Definition at line 176 of file network.h.

Referenced by libsrt_setup(), tcp_open(), and udp_socket_create().

#define AI_CANONNAME   2

Definition at line 180 of file network.h.

#define AI_NUMERICHOST   4

Definition at line 184 of file network.h.

Referenced by ff_tls_open_underlying(), ff_url_join(), and get_sockaddr().

#define NI_NOFQDN   1

Definition at line 188 of file network.h.

#define NI_NUMERICHOST   2

Definition at line 192 of file network.h.

Referenced by ff_connect_parallel(), ff_rtsp_open_transport_ctx(), and print_address_list().

#define NI_NAMERQD   4

Definition at line 196 of file network.h.

#define NI_NUMERICSERV   8

Definition at line 200 of file network.h.

Referenced by ff_connect_parallel(), print_address_list(), and udp_port().

#define NI_DGRAM   16

Definition at line 204 of file network.h.

#define getaddrinfo   ff_getaddrinfo
#define freeaddrinfo   ff_freeaddrinfo
#define getnameinfo   ff_getnameinfo
#define gai_strerror   ff_gai_strerror
#define INADDR_LOOPBACK   0x7f000001

Definition at line 226 of file network.h.

#define INET_ADDRSTRLEN   16

Definition at line 230 of file network.h.

#define INET6_ADDRSTRLEN   INET_ADDRSTRLEN

Definition at line 234 of file network.h.

#define IN_MULTICAST (   a)    ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)

Definition at line 238 of file network.h.

Referenced by ff_is_multicast_address().

#define IN6_IS_ADDR_MULTICAST (   a)    (((uint8_t *) (a))[0] == 0xff)

Definition at line 241 of file network.h.

Referenced by ff_is_multicast_address().

#define POLLING_TIME   100

Function Documentation

int ff_socket_nonblock ( int  socket,
int  enable 
)
int ff_network_init ( void  )
void ff_network_close ( void  )
int ff_tls_init ( void  )

Definition at line 31 of file network.c.

Referenced by avformat_network_init().

void ff_tls_deinit ( void  )

Definition at line 46 of file network.c.

Referenced by avformat_network_deinit().

int ff_network_wait_fd ( int  fd,
int  write 
)
int ff_network_wait_fd_timeout ( int  fd,
int  write,
int64_t  timeout,
AVIOInterruptCB int_cb 
)

This works similarly to ff_network_wait_fd, but waits up to 'timeout' microseconds Uses ff_network_wait_fd in a loop.

Parameters
fdSocket descriptor
writeSet 1 to wait for socket able to be read, 0 to be written
timeoutTimeout interval, in microseconds. Actual precision is 100000 mcs, due to ff_network_wait_fd usage
int_cbInterrupt callback, is checked before each ff_network_wait_fd call
Returns
0 if data can be read/written, AVERROR(ETIMEDOUT) if timeout expired, or negative error code

Definition at line 78 of file network.c.

Referenced by tcp_read(), and tcp_write().

int ff_network_sleep_interruptible ( int64_t  timeout,
AVIOInterruptCB int_cb 
)

Waits for up to 'timeout' microseconds.

If the usert's int_cb is set and triggered, return before that.

Parameters
timeoutTimeout in microseconds. Maybe have lower actual precision.
int_cbInterrupt callback, is checked regularly.
Returns
AVERROR(ETIMEDOUT) if timeout expirted, AVERROR_EXIT if interrupted by int_cb

Definition at line 98 of file network.c.

Referenced by http_read_stream().

int ff_getaddrinfo ( const char *  node,
const char *  service,
const struct addrinfo hints,
struct addrinfo **  res 
)
void ff_freeaddrinfo ( struct addrinfo res)
int ff_getnameinfo ( const struct sockaddr *  sa,
int  salen,
char *  host,
int  hostlen,
char *  serv,
int  servlen,
int  flags 
)
const char* ff_gai_strerror ( int  ecode)
int ff_is_multicast_address ( struct sockaddr *  addr)

Definition at line 145 of file network.c.

Referenced by ff_udp_set_remote_url().

int ff_listen_bind ( int  fd,
const struct sockaddr *  addr,
socklen_t  addrlen,
int  timeout,
URLContext h 
)

Bind to a file descriptor and poll for a connection.

Parameters
fdFirst argument of bind().
addrSecond argument of bind().
addrlenThird argument of bind().
timeoutPolling timeout in milliseconds.
hURLContext providing interrupt check callback and logging context.
Returns
A non-blocking file descriptor on success or an AVERROR on failure.

Definition at line 246 of file network.c.

Referenced by sctp_open(), tcp_open(), and unix_open().

int ff_listen ( int  fd,
const struct sockaddr *  addr,
socklen_t  addrlen 
)

Bind to a file descriptor to an address without accepting connections.

Parameters
fdFirst argument of bind().
addrSecond argument of bind().
addrlenThird argument of bind().
Returns
0 on success or an AVERROR on failure.

Definition at line 210 of file network.c.

Referenced by ff_listen_bind(), and tcp_open().

int ff_accept ( int  fd,
int  timeout,
URLContext h 
)

Poll for a single connection on the passed file descriptor.

Parameters
fdThe listening socket file descriptor.
timeoutPolling timeout in milliseconds.
hURLContext providing interrupt check callback and logging context.
Returns
A non-blocking file descriptor on success or an AVERROR on failure.

Definition at line 228 of file network.c.

Referenced by ff_listen_bind(), and tcp_accept().

int ff_listen_connect ( int  fd,
const struct sockaddr *  addr,
socklen_t  addrlen,
int  timeout,
URLContext h,
int  will_try_next 
)

Connect to a file descriptor and poll for result.

Parameters
fdFirst argument of connect(), will be set as non-blocking.
addrSecond argument of connect().
addrlenThird argument of connect().
timeoutPolling timeout in milliseconds.
hURLContext providing interrupt check callback and logging context.
will_try_nextWhether the caller will try to connect to another address for the same host name, affecting the form of logged errors.
Returns
0 on success, AVERROR on failure.

Definition at line 258 of file network.c.

Referenced by sctp_open(), and unix_open().

int ff_http_match_no_proxy ( const char *  no_proxy,
const char *  hostname 
)

Definition at line 551 of file network.c.

Referenced by ff_tls_open_underlying(), http_open_cnx_internal(), and test().

int ff_socket ( int  domain,
int  type,
int  protocol 
)

Definition at line 183 of file network.c.

Referenced by sctp_open(), start_connect_attempt(), tcp_open(), udp_socket_create(), and unix_open().

void ff_log_net_error ( void ctx,
int  level,
const char *  prefix 
)
int ff_connect_parallel ( struct addrinfo addrs,
int  timeout_ms_per_address,
int  parallel,
URLContext h,
int fd,
void(*)(void *, int customize_fd,
void customize_ctx 
)

Connect to any of the given addrinfo addresses, with multiple attempts running in parallel.

Parameters
addrsThe list of addresses to try to connect to. This list will be mutated internally, but the list head will remain as such, so this doesn't affect the caller freeing the list afterwards.
timeout_ms_per_addressThe number of milliseconds to wait for each connection attempt. Since multiple addresses are tried, some of them in parallel, the total run time will at most be timeout_ms_per_address*ceil(nb_addrs/parallel) + (parallel - 1) * NEXT_ATTEMPT_DELAY_MS.
parallelThe maximum number of connections to attempt in parallel. This is limited to an internal maximum capacity.
hURLContext providing interrupt check callback and logging context.
fdIf successful, the connected socket is returned here.
customize_fdFunction that will be called for each socket created, to allow the caller to set socket options before calling connect() on it, may be NULL.
customize_ctxContext parameter passed to customize_fd.
Returns
0 on success, AVERROR on failure.

Definition at line 403 of file network.c.

Referenced by tcp_open().