tsdwl: add socket udp client/server

1 files changed, 37 insertions, 0 deletions

diff --git a/Year_3/TSDWL/socket_udp/client.c b/Year_3/TSDWL/socket_udp/client.c
new file mode 100644
index 0000000..8748db5
--- /dev/null
+++ b/Year_3/TSDWL/socket_udp/client.c
@@ -0,0 +1,37 @@
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int
+main(int argc, char* argv[])
+{
+    int sockfd;
+    struct sockaddr_in addr;
+    socklen_t addrlen;
+
+    if ((sockfd = socket(PF_INET, SOCK_DGRAM, 0)) == -1) {
+        perror("Error with socket");
+        exit(1);
+    }
+
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(atoi(argv[1]));
+    if (inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr) == -1) {
+        perror("Can't convert IP in bytes");
+        exit(1);
+    }
+    addrlen = sizeof(addr);
+
+    if (sendto(sockfd, argv[2], strlen(argv[2]), 0, (struct sockaddr*)&addr, addrlen) == -1) {
+        perror("Message not sent");
+    }
+
+    close(sockfd);
+
+    return 0;
+}