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Socket/Client/inc/main.h

@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#define PORT 8080

Socket/Client/src/main.c

@@ -0,0 +1,35 @@
+#include "main.h"
+
+int main(int argc, char *argv[])
+{
+    int sock_1, v_read;
+    struct sockaddr_in address;
+    char buffer[1024] = {0};
+    char *hey = "Hey I am client!";
+
+    if ((sock_1 = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+    {
+        perror("socket creation failure!\n");
+        return -1;
+    }
+
+    address.sin_family = AF_INET;
+    address.sin_port = htons( PORT );
+
+    if (inet_pton(AF_INET, "127.0.0.1", &address.sin_addr) <= 0)
+    {
+        printf("Invalid IP Address\n");
+        return -1;
+    }
+
+    if (connect(sock_1, (struct sockaddr *)&address, sizeof(address)) < 0)
+    {
+        printf("connection failure!\n");
+        return -1;
+    }    
+    send(sock_1, hey, strlen(hey), 0);
+    printf("Hello msg is sent: \n");
+    v_read = read(sock_1, buffer, 1024);
+    printf("buffer content: %s\n", buffer);
+
+}

Socket/Server/inc/main.h

@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <netinet/in.h>
+#include <string.h>
+
+#define PORT 8080

Socket/Server/src/main.c

@@ -0,0 +1,53 @@
+#include "main.h"
+
+int main(int argc, char *argv[])
+{
+    int serv_fd, n_socket, v_read;
+    struct sockaddr_in address;
+
+    int opt = 1;
+    int addr_length = sizeof(address);
+    char buffer[1024] = {0};
+
+    char *hey = "Hey I am server!";
+
+    if ((serv_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+    {
+        perror("socket failure!\n");
+        exit(0);
+    }
+
+    if (setsockopt(serv_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)))
+    {
+        perror("setsockopt error\n");
+        exit(0);
+    }
+
+    address.sin_family = AF_INET;
+    address.sin_addr.s_addr = INADDR_ANY;
+    address.sin_port = htons( PORT );
+
+    if (bind(serv_fd, (struct sockaddr *)&address, sizeof(address)) < 0)
+    {
+        perror("bind failure\n");
+        exit(0);
+    }
+
+    if (listen(serv_fd, 3) < 0) 
+    {
+        perror("listen error\n");
+        exit(0);
+    }
+
+    if ((n_socket = accept(serv_fd, (struct sockaddr *)&address, (socklen_t *)&addr_length)) < 0)
+    {
+        perror("accept error\n");
+        exit(0);
+    }
+
+    v_read = read(n_socket, buffer, 1024);
+    printf("buffer content: %s\n", buffer);
+    send(n_socket, hey, strlen(hey), 0);
+    printf("Hello msg is sent: \n");
+
+}