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ftp: reconnect on tcp read error

This commit reconnect both connections and retries before ftp_read returns an error.
Practical use case: resume after lock screen on iOS devices.

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
This commit is contained in:
Lukasz Marek 2013-06-02 01:41:03 +02:00
parent 56abad0ee4
commit 23a76b71de

View File

@ -499,8 +499,10 @@ static int ftp_abort(URLContext *h)
{
int err;
ftp_close_both_connections(h->priv_data);
if ((err = ftp_connect_control_connection(h)) < 0)
if ((err = ftp_connect_control_connection(h)) < 0) {
av_log(h, AV_LOG_ERROR, "Reconnect failed.\n");
return err;
}
return 0;
}
@ -602,10 +604,14 @@ static int ftp_read(URLContext *h, unsigned char *buf, int size)
av_dlog(h, "ftp protocol read %d bytes\n", size);
retry:
if (s->state == DISCONNECTED) {
if (s->position >= s->filesize)
return 0;
if ((err = ftp_connect_data_connection(h)) < 0)
return err;
}
if (s->state == READY) {
if (s->position >= s->filesize)
return 0;
if ((err = ftp_retrieve(s)) < 0)
return err;
}
@ -618,15 +624,12 @@ static int ftp_read(URLContext *h, unsigned char *buf, int size)
return AVERROR(EIO);
}
}
if (!read && s->position < s->filesize && !h->is_streamed) {
if (read <= 0 && s->position < s->filesize && !h->is_streamed) {
/* Server closed connection. Probably due to inactivity */
/* TODO: Consider retry before reconnect */
int64_t pos = s->position;
av_log(h, AV_LOG_INFO, "Reconnect to FTP server.\n");
if ((err = ftp_abort(h)) < 0) {
av_log(h, AV_LOG_ERROR, "Reconnect failed.\n");
if ((err = ftp_abort(h)) < 0)
return err;
}
if ((err = ftp_seek(h, pos, SEEK_SET)) < 0) {
av_log(h, AV_LOG_ERROR, "Position cannot be restored.\n");
return err;