first version of client

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": []
+}

client/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.19)
+project(qotd C)
+
+message("STATIC_BUILD=${STATIC_BUILD}")
+
+set(CMAKE_C_STANDARD 99)
+
+add_executable(qotd_c main.c)
+
+if ( STATIC_BUILD ) 
+    target_link_libraries(qotd -static)
+endif()

client/client.c

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+#include "client.h"

client/client.h

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>

client/config.h

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+../server/config.h

client/main.c

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+#include <arpa/inet.h> // inet_addr()
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h> // bzero()
+#include <sys/socket.h>
+#include <unistd.h> // read(), write(), close()
+#include <errno.h>
+#include "config.h"
+#define MAX 80
+#define PORT 17
+#define SA struct sockaddr
+
+int main()
+{
+    int sockfd, connfd;
+    struct sockaddr_in servaddr4, cli;
+
+    unsigned int servaddrlength;
+    // socket create and verification
+    sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    if (sockfd == -1)
+    {
+        printf("socket creation failed...\n");
+        exit(0);
+    }
+    else
+        printf("Socket successfully created..\n");
+
+    // assign IP, PORT
+    servaddr4.sin_family = AF_INET;
+    servaddr4.sin_addr.s_addr = inet_addr("127.0.0.1");
+    servaddr4.sin_port = htons(PORT);
+
+    int status = connect(sockfd, (SA *)&servaddr4, sizeof servaddr4);
+    // connect the client socket to server socket
+    if (status != 0)
+    {
+        printf("%i\n", errno);
+        printf("connection with the server failed...\n");
+
+        exit(0);
+    }
+    else
+        printf("connected to the server..\n");
+
+    struct sockaddr *servaddr = (SA *)&servaddr4;
+    unsigned int ss = sizeof servaddr;
+    // function for chat
+    char clientMessage[MESSAGE_STRING_LENGTH] = {0};
+    recvfrom(sockfd, clientMessage, MESSAGE_STRING_LENGTH, 0, servaddr, &ss);
+    printf("From Server : %s", clientMessage);
+
+    // close the socket
+    close(sockfd);
+}