Mirror/ardupilot
5
0
Fork 0
mirror of https://github.com/ArduPilot/ardupilot synced 2025-02-22 15:53:56 -04:00
Code Issues Packages Projects Releases Wiki Activity

HAL_SITL: fixed multicast UDP on cygwin

Browse Source 
this will allow the SITL button on cygwin to work with multicast,
allowing for complex vehicle interactions between machines
This commit is contained in:
Andrew Tridgell 2023-06-21 15:22:32 +10:00
parent 0bad9451d5
commit 3bcceb9420
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
libraries/AP_HAL_SITL/UARTDriver.cpp
View File

@ -568,6 +568,14 @@ void UARTDriver::_udp_start_multicast(const char *address, uint16_t port)
// close on exec, to allow reboot // close on exec, to allow reboot
fcntl(_mc_fd, F_SETFD, FD_CLOEXEC); fcntl(_mc_fd, F_SETFD, FD_CLOEXEC);
#if defined(__CYGWIN__) || defined(__CYGWIN64__) || defined(CYGWIN_BUILD)
/*
on cygwin you need to bind to INADDR_ANY then use the multicast
IP_ADD_MEMBERSHIP to get on the right address
*/
sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);
#endif
ret = bind(_mc_fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); ret = bind(_mc_fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr));
if (ret == -1) { if (ret == -1) {
fprintf(stderr, "multicast bind failed on port %u - %s\n", fprintf(stderr, "multicast bind failed on port %u - %s\n",