From: Stefan Knoblich <stkn@openisdn.net>
Date: Fri, 23 Mar 2012 00:00:26 +0000 (+0100)
Subject: ftmod_misdn: misdn_write() workaround for signalling drivers that do not use write... 
X-Git-Tag: v1.2-rc1~19^2^2~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2841e028044241c8a9c1e1cba047175329f42d0;p=thirdparty%2Ffreeswitch.git

ftmod_misdn: misdn_write() workaround for signalling drivers that do not use write polling.

Wait till the channel is actually ready to send data.

Signed-off-by: Stefan Knoblich <stkn@openisdn.net>
---

diff --git a/libs/freetdm/src/ftmod/ftmod_misdn/ftmod_misdn.c b/libs/freetdm/src/ftmod/ftmod_misdn/ftmod_misdn.c
index 3080de52f2..410722fd53 100644
--- a/libs/freetdm/src/ftmod/ftmod_misdn/ftmod_misdn.c
+++ b/libs/freetdm/src/ftmod/ftmod_misdn/ftmod_misdn.c
@@ -1261,6 +1261,7 @@ static FIO_WRITE_FUNCTION(misdn_write)
 	struct mISDNhead *hh = (struct mISDNhead *)wbuf;
 	int size = *datalen;
 	int retval = 0;
+	ftdm_wait_flag_t wflags;
 
 	assert(priv);
 
@@ -1284,6 +1285,15 @@ static FIO_WRITE_FUNCTION(misdn_write)
 	memcpy(wbuf + MISDN_HEADER_LEN, data, size);
 	size += MISDN_HEADER_LEN;
 
+	/* wait for channel to get ready */
+	wflags = FTDM_WRITE;
+	retval = misdn_wait(ftdmchan, &wflags, 20);
+	if (retval) {
+		/* timeout, io error */
+		*datalen = 0;
+		return FTDM_FAIL;
+	}
+
 #ifdef MISDN_DEBUG_IO
 	ftdm_log_chan(ftdmchan, FTDM_LOG_DEBUG, "mISDN writing %d bytes to channel socket %d [dev.ch: %d.%d]\n",
 		size, ftdmchan->sockfd, priv->addr.dev, priv->addr.channel);