Refactored project structure, added multithreaded echo server and prime checking server, updated tests.

server00.c

@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <winsock2.h>
+#include <pthread.h>
+#include "server00.h"
+#include "data.h"
+
+#define PORT 40000
+#define BUFFER_SIZE 1024
+
+
+
+int main()
+{
+    // load_file();
+
+    WSADATA WSAData;
+
+    SOCKET client;
+
+    SOCKADDR_IN serverAddr, clientAddr;
+
+    WSAStartup(MAKEWORD(2,0), &WSAData);
+    SOCKET server = socket(AF_INET, SOCK_STREAM, 0);
+
+    serverAddr.sin_addr.s_addr = INADDR_ANY;
+    serverAddr.sin_family = AF_INET;
+    serverAddr.sin_port = htons(PORT);
+
+    bind(server, (SOCKADDR *)&serverAddr, sizeof(serverAddr));
+    listen(server, 0);
+
+    printf("Listening for incoming connections...\n");
+
+    int clientAddrSize = sizeof(clientAddr);
+    int connection_number = 0;
+    char_array_t *reply = char_array_create(1024);
+    while((client = accept(server, (SOCKADDR *)&clientAddr, &clientAddrSize)) != INVALID_SOCKET)
+    {
+        struct EchoArgs *args = malloc(sizeof(struct EchoArgs));
+        args->client = client;
+        args->connection = connection_number++;
+        pthread_t thread;
+        pthread_create(&thread, nullptr, echo,(void *) args);
+    }
+}
+
+void *echo(void *args) {
+    const auto echoArgs = (struct EchoArgs *) args;
+    char buffer[BUFFER_SIZE] = {0};
+    char_array_t *reply = char_array_create(BUFFER_SIZE);
+    int bytesReceived;
+    int bytesTotal = 0;
+    while ((bytesReceived = recv(echoArgs->client, buffer, sizeof(buffer), 0)) > 0) {
+        // printf("            Client {%d} says: |%.1024s|\n", echoArgs->connection ,buffer);
+        printf("Client sent {%d}: |%d| \n", echoArgs->connection, bytesReceived);
+
+        char_array_append(reply, buffer, bytesReceived);
+        bytesTotal += bytesReceived;
+        memset(buffer, 0, sizeof(buffer));
+        Sleep(20);
+    }
+    printf("Total bytes received {%d}: %d\n", echoArgs->connection, bytesTotal);
+    printf("Sending back {%d}: |%llu| \n", echoArgs->connection, reply->size);
+    send(echoArgs->client, reply->data,reply->size,0);
+    closesocket(echoArgs->client);
+    free(echoArgs);
+    return NULL;
+}