static cmyth_conn_t
cmyth_conn_connect(char *server, unsigned short port, unsigned buflen,
int tcp_rcvbuf, int event)
{
cmyth_conn_t conn;
char announcement[256];
unsigned long tmp_ver;
int attempt = 0;
top:
conn = cmyth_connect(server, port, buflen, tcp_rcvbuf);
if (!conn) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_connect(%s, %d, %d) failed\n",
__FUNCTION__, server, port, buflen);
return NULL;
}
/*
* Find out what the Myth Protocol Version is for this connection.
* Loop around until we get agreement from the server.
*/
if (attempt == 0)
tmp_ver = conn->conn_version;
conn->conn_version = tmp_ver;
if (tmp_ver >= 62) {
myth_protomap_t *map = protomap;
while (map->version != 0 && map->version != tmp_ver)
map++;
if (map->version == 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: failed to connect with any version\n",
__FUNCTION__);
goto shut;
}
sprintf(announcement, "MYTH_PROTO_VERSION %ld %04X", conn->conn_version, map->token);
} else {
sprintf(announcement, "MYTH_PROTO_VERSION %ld", conn->conn_version);
}
if (cmyth_send_message(conn, announcement) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_send_message('%s') failed\n",
__FUNCTION__, announcement);
goto shut;
}
if (cmyth_rcv_version(conn, &tmp_ver) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_rcv_version() failed\n",
__FUNCTION__);
goto shut;
}
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: asked for version %ld, got version %ld\n",
__FUNCTION__, conn->conn_version, tmp_ver);
if (conn->conn_version != tmp_ver) {
if (attempt == 1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: failed to connect with any version\n",
__FUNCTION__);
goto shut;
}
attempt = 1;
ref_release(conn);
goto top;
}
cmyth_dbg(CMYTH_DBG_PROTO, "%s: agreed on Version %ld protocol\n",
__FUNCTION__, conn->conn_version);
sprintf(announcement, "ANN Playback %s %d", my_hostname, event);
if (cmyth_send_message(conn, announcement) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_send_message('%s') failed\n",
__FUNCTION__, announcement);
goto shut;
}
if (cmyth_rcv_okay(conn, "OK") < 0) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: cmyth_rcv_okay() failed\n",
__FUNCTION__);
goto shut;
}
return conn;
shut:
ref_release(conn);
return NULL;
}
static cmyth_conn_t
cmyth_conn_connect(char *server, unsigned short port, unsigned buflen,
int tcp_rcvbuf, int event)
{
cmyth_conn_t conn;
char announcement[256];
unsigned long tmp_ver;
int attempt = 0;
top:
conn = cmyth_connect(server, port, buflen, tcp_rcvbuf);
if (!conn) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_connect(%s, %d, %d) failed\n",
__FUNCTION__, server, port, buflen);
return NULL;
}
/*
* Find out what the Myth Protocol Version is for this connection.
* Loop around until we get agreement from the server.
*/
if (attempt == 0)
tmp_ver = conn->conn_version;
conn->conn_version = tmp_ver;
/*
* Myth 0.23.1 (Myth 0.23 + fixes) introduced an out of sequence protocol version number (23056)
* due to the next protocol version number having already been bumped in trunk.
*
* http://www.mythtv.org/wiki/Myth_Protocol
*/
if (tmp_ver >= 62 && tmp_ver != 23056) { // Treat protocol version number 23056 the same as protocol 56
myth_protomap_t *map = protomap;
while (map->version != 0 && map->version != tmp_ver)
map++;
if (map->version == 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: failed to connect with any version\n",
__FUNCTION__);
goto shut;
}
sprintf(announcement, "MYTH_PROTO_VERSION %ld %s", conn->conn_version, map->token);
} else {
sprintf(announcement, "MYTH_PROTO_VERSION %ld", conn->conn_version);
}
if (cmyth_send_message(conn, announcement) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_send_message('%s') failed\n",
__FUNCTION__, announcement);
goto shut;
}
if (cmyth_rcv_version(conn, &tmp_ver) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_rcv_version() failed\n",
__FUNCTION__);
goto shut;
}
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: asked for version %ld, got version %ld\n",
__FUNCTION__, conn->conn_version, tmp_ver);
if (conn->conn_version != tmp_ver) {
if (attempt == 1) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: failed to connect with any version\n",
__FUNCTION__);
goto shut;
}
attempt = 1;
ref_release(conn);
goto top;
}
cmyth_dbg(CMYTH_DBG_PROTO, "%s: agreed on Version %ld protocol\n",
__FUNCTION__, conn->conn_version);
sprintf(announcement, "ANN Playback %s %d", my_hostname, event);
if (cmyth_send_message(conn, announcement) < 0) {
cmyth_dbg(CMYTH_DBG_ERROR,
"%s: cmyth_send_message('%s') failed\n",
__FUNCTION__, announcement);
goto shut;
}
if (cmyth_rcv_okay(conn, "OK") < 0) {
cmyth_dbg(CMYTH_DBG_ERROR, "%s: cmyth_rcv_okay() failed\n",
__FUNCTION__);
goto shut;
}
/*
* All of the downstream code in libcmyth assumes a monotonically increasing version number.
* This was not the case for Myth 0.23.1 (0.23 + fixes) where protocol version number 23056
* was used since 57 had already been used in trunk.
*
* Convert from protocol version number 23056 to version number 56 so subsequent code within
* libcmyth uses the same logic for the 23056 protocol as would be used for protocol version 56.
*/
if (conn->conn_version == 23056) {
conn->conn_version = 56;
}
return conn;
shut:
ref_release(conn);
return NULL;
}