Hizenberg/Event-Loop-in-C
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Hizenberg
2024-10-20 22:41:56 +05:30
parent 3ae6a02a3e
commit 2d364cfda5
7 changed files with 237 additions and 211 deletions
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36
asyncproject/network_utils.c
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@@ -35,7 +35,7 @@ _udp_server_create_and_start(void* arg) {
struct sockaddr_in server_addr;
server_addr.sin_family = AF_INET;
server_addr.sin_port = port_no;
server_addr.sin_port = htons(port_no);
server_addr.sin_addr.s_addr = INADDR_ANY;
if (bind(udp_sock_fd, (struct sockaddr*)&server_addr,
@@ -110,25 +110,37 @@ send_udp_msg(char* dest_ip_addr,
int sock_fd) {
struct sockaddr_in dest;
struct hostent* host;
// Clear the dest structure
memset(&dest, 0, sizeof(dest));
dest.sin_family = AF_INET;
dest.sin_port = dest_port_no;
struct hostent* host = (struct hostent*)gethostbyname(dest_ip_addr);
dest.sin_addr = *((struct in_addr*)host->h_addr_list);
int addr_len = sizeof(struct sockaddr);
dest.sin_port = htons(dest_port_no); // Convert port to network byte order
// Get the host by name
host = gethostbyname(dest_ip_addr);
if (host == NULL) {
printf("Error resolving hostname: %s\n", dest_ip_addr);
return -1;
}
dest.sin_addr = *((struct in_addr*)host->h_addr_list[0]); // Assign IP address
if (sock_fd < 0) {
sock_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
sock_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); // Create UDP socket
if (sock_fd < 0) {
printf("socket creation failed, errno = %d\n", errno);
printf("Socket creation failed, errno = %d\n", errno);
return -1;
}
}
sendto(sock_fd, msg, msg_size,
0, (struct sockaddr*)&dest,
sizeof(struct sockaddr));
// Send the message
int bytes_sent = sendto(sock_fd, msg, msg_size, 0, (struct sockaddr*)&dest, sizeof(dest));
if (bytes_sent < 0) {
printf("Sendto failed, errno = %d\n", errno);
return -1;
}
return sock_fd;
}