40 lines
1,020 B
C++
40 lines
1,020 B
C++
#include <netdb.h>
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#include <arpa/inet.h>
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#include <trantor/utils/Logger.h>
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#include "config.h"
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#include <helpers.h>
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#include <unistd.h>
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int
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helpers::send_udp_broadcast(const char *addr, uint16_t port, const char* message)
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{
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struct sockaddr_in their_addr{};
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int fd;
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if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
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{
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LOG_ERROR << "Error creating socket";
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return -1;
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}
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int broadcast = 1;
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if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof broadcast) < 0)
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{
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LOG_ERROR << "Error setting broadcast";
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return -1;
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}
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memset(&their_addr, 0, sizeof(their_addr));
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their_addr.sin_family = AF_INET;
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their_addr.sin_port = htons(port);
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their_addr.sin_addr.s_addr = inet_addr(addr);
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if(sendto(fd, message, strlen(message), 0, (struct sockaddr *)&their_addr, sizeof(their_addr)) < 0)
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{
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LOG_ERROR << "Error sending broadcast " << errno << " " << strerror(errno);
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return -1;
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}
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close(fd);
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return 0;
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}
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