Ensure output from external transport applications is shown line by l…

…ine.

transport/external_transport.ts

@@ -82,11 +82,21 @@ abstract class ExternalTransport implements Transport {
     );
 
     this.process.stdout.on("data", (data) => {
-      logger.debug("SFU", this.id, "stdout:", data);
+      const lines = data.toString().split(/[\r\n]+/)
+      for(const line of lines) {
+        if(line.length > 0) { // Don't include empty new lines created by e.g. println
+          logger.debug("SFU", this.id, "stdout:", line);
+        }
+      }
     });
 
     this.process.stderr.on("data", (data) => {
-      logger.debug("SFU", this.id, "stderr:", data);
+      const lines = data.toString().split(/[\r\n]+/)
+      for(const line of lines) {
+        if(line.length > 0) { // Don't include empty new lines created by e.g. println
+          logger.debug("SFU", this.id, "stderr:", line);
+        }
+      }
     });
 
     this.process.on("error", (err) => {