Don't send if not open.

StefanFabian · StefanFabian · commit ead6c49c615f · 2025-08-04T15:43:36.000+02:00
diff --git a/src/async_port/async_can.cpp b/src/async_port/async_can.cpp
@@ -124,6 +124,9 @@ void AsyncCAN::ReadFromPort(struct can_frame &rec_frame,
 }
 
 void AsyncCAN::SendFrame(const struct can_frame &frame) {
+  if (!socketcan_stream_.is_open()) {
+    return;
+  }
   socketcan_stream_.async_write_some(
       asio::buffer(&frame, sizeof(frame)),
       [](asio::error_code error, size_t bytes_transferred) {

Original file line number	Diff line number	Diff line change
`@@ -124,6 +124,9 @@ void AsyncCAN::ReadFromPort(struct can_frame &rec_frame,`
`124`	`124`	`}`
`125`	`125`
`126`	`126`	`void AsyncCAN::SendFrame(const struct can_frame &frame) {`
	`127`	`+ if (!socketcan_stream_.is_open()) {`
	`128`	`+ return;`
	`129`	`+ }`
`127`	`130`	`socketcan_stream_.async_write_some(`
`128`	`131`	`asio::buffer(&frame, sizeof(frame)),`
`129`	`132`	`[](asio::error_code error, size_t bytes_transferred) {`