diff --git a/doc/protocols.texi b/doc/protocols.texi index 21ae6181a0..b3fad55591 100644 --- a/doc/protocols.texi +++ b/doc/protocols.texi @@ -1882,6 +1882,12 @@ The list of supported options follows. Listen for an incoming connection. 0 disables listen, 1 enables listen in single client mode, 2 enables listen in multi-client mode. Default value is 0. +@item local_addr=@var{addr} +Local IP address of a network interface used for tcp socket connect. + +@item local_port=@var{port} +Local port used for tcp socket connect. + @item timeout=@var{microseconds} Set raise error timeout, expressed in microseconds. diff --git a/libavformat/network.c b/libavformat/network.c index 21e20b3e9a..f752efc411 100644 --- a/libavformat/network.c +++ b/libavformat/network.c @@ -356,7 +356,7 @@ struct ConnectionAttempt { static int start_connect_attempt(struct ConnectionAttempt *attempt, struct addrinfo **ptr, int timeout_ms, URLContext *h, - void (*customize_fd)(void *, int), void *customize_ctx) + int (*customize_fd)(void *, int, int), void *customize_ctx) { struct addrinfo *ai = *ptr; int ret; @@ -371,8 +371,14 @@ static int start_connect_attempt(struct ConnectionAttempt *attempt, ff_socket_nonblock(attempt->fd, 1); - if (customize_fd) - customize_fd(customize_ctx, attempt->fd); + if (customize_fd) { + ret = customize_fd(customize_ctx, attempt->fd, ai->ai_family); + if (ret) { + closesocket(attempt->fd); + attempt->fd = -1; + return ret; + } + } while ((ret = connect(attempt->fd, ai->ai_addr, ai->ai_addrlen))) { ret = ff_neterrno(); @@ -402,7 +408,7 @@ static int start_connect_attempt(struct ConnectionAttempt *attempt, 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) + int (*customize_fd)(void *, int, int), void *customize_ctx) { struct ConnectionAttempt attempts[3]; struct pollfd pfd[3]; diff --git a/libavformat/network.h b/libavformat/network.h index 71c49a73fb..ca214087fc 100644 --- a/libavformat/network.h +++ b/libavformat/network.h @@ -336,6 +336,6 @@ 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); + int (*customize_fd)(void *, int, int), void *customize_ctx); #endif /* AVFORMAT_NETWORK_H */ diff --git a/libavformat/tcp.c b/libavformat/tcp.c index a11ccbb913..a889633457 100644 --- a/libavformat/tcp.c +++ b/libavformat/tcp.c @@ -36,6 +36,8 @@ typedef struct TCPContext { const AVClass *class; int fd; int listen; + char *local_port; + char *local_addr; int open_timeout; int rw_timeout; int listen_timeout; @@ -52,6 +54,8 @@ typedef struct TCPContext { #define E AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, .flags = D|E }, + { "local_port", "Local port", OFFSET(local_port), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, .flags = D|E }, + { "local_addr", "Local address", OFFSET(local_addr), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, .flags = D|E }, { "timeout", "set timeout (in microseconds) of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, { "listen_timeout", "Connection awaiting timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, { "send_buffer_size", "Socket send buffer size (in bytes)", OFFSET(send_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, @@ -70,9 +74,40 @@ static const AVClass tcp_class = { .version = LIBAVUTIL_VERSION_INT, }; -static void customize_fd(void *ctx, int fd) +static int customize_fd(void *ctx, int fd, int family) { TCPContext *s = ctx; + + if (s->local_addr || s->local_port) { + struct addrinfo hints = { 0 }, *ai, *cur_ai; + int ret; + + hints.ai_family = family; + hints.ai_socktype = SOCK_STREAM; + + ret = getaddrinfo(s->local_addr, s->local_port, &hints, &ai); + if (ret) { + av_log(ctx, AV_LOG_ERROR, + "Failed to getaddrinfo local addr: %s port: %s err: %s\n", + s->local_addr, s->local_port, gai_strerror(ret)); + return ret; + } + + cur_ai = ai; + while (cur_ai) { + ret = bind(fd, (struct sockaddr *)cur_ai->ai_addr, (int)cur_ai->ai_addrlen); + if (ret) + cur_ai = cur_ai->ai_next; + else + break; + } + freeaddrinfo(ai); + + if (ret) { + ff_log_net_error(ctx, AV_LOG_ERROR, "bind local failed"); + return ret; + } + } /* Set the socket's send or receive buffer sizes, if specified. If unspecified or setting fails, system default is used. */ if (s->recv_buffer_size > 0) { @@ -97,6 +132,8 @@ static void customize_fd(void *ctx, int fd) } } #endif /* !HAVE_WINSOCK2_H */ + + return 0; } /* return non zero if error */ @@ -129,6 +166,18 @@ static int tcp_open(URLContext *h, const char *uri, int flags) if (buf == endptr) s->listen = 1; } + if (av_find_info_tag(buf, sizeof(buf), "local_port", p)) { + av_freep(&s->local_port); + s->local_port = av_strdup(buf); + if (!s->local_addr) + return AVERROR(ENOMEM); + } + if (av_find_info_tag(buf, sizeof(buf), "local_addr", p)) { + av_freep(&s->local_addr); + s->local_addr = av_strdup(buf); + if (!s->local_addr) + return AVERROR(ENOMEM); + } if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { s->rw_timeout = strtol(buf, NULL, 10); } @@ -183,7 +232,7 @@ static int tcp_open(URLContext *h, const char *uri, int flags) } if (fd < 0) goto fail1; - customize_fd(s, fd); + customize_fd(s, fd, cur_ai->ai_family); } if (s->listen == 2) { diff --git a/libavformat/version.h b/libavformat/version.h index af7d0a1024..cc56b7cf5c 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,7 +32,7 @@ #include "version_major.h" #define LIBAVFORMAT_VERSION_MINOR 4 -#define LIBAVFORMAT_VERSION_MICRO 100 +#define LIBAVFORMAT_VERSION_MICRO 101 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \