initial

main.c

@@ -0,0 +1,82 @@
+#define WIN32_LEAN_AND_MEAN  // Say this...
+
+#include <windows.h> 
+#include <winsock2.h>
+#include <stdio.h>
+#include <stdint.h>
+
+
+#pragma comment(lib, "Ws2_32.lib")
+
+
+/*
+Address info
+
+- ai_flag: address info flag
+- ai_family: addres info family AF_INET (ipv4) or AF_INET6 (ipv6)
+- ai_socktype: socket type SOCK_STREAM or SOCK_DGRAM
+- ai_protocol: use 0 for any
+- ai_addrlen: size of the ai_addr (below)
+- ai_addr: pointer sockaddr struct
+- ai_canonname: canonical hostname
+- ai_next: linked list to next node
+
+*/
+typedef struct addrinfo {
+    int ai_flag; // address info flags
+    int ai_family; // address info famitly ipv4/6
+    int ai_socktype;
+    int ai_protocol;
+    size_t ai_addrlen;
+    sockaddr *ai_addr;
+    char *ai_canonname;
+
+    addrinfo *ai_next;
+} addrinfo;
+
+/*
+Socket address info
+
+- sa_family: AF_XX (e.g AF_INET)
+- sa_data: 14 bytes of protocol address
+*/
+typedef struct sockaddr {
+    unsigned short sa_family;
+    char *sa_data[14];
+
+} sockaddr;
+
+
+
+typedef sockaddr_in {
+    short int sin_family;
+    unsigned short int sin_port;
+    struct in_addr sin_addr;
+    unsigned char sin_zero[8];
+} sockaddr_in;
+
+
+int main() 
+{
+
+    {
+        WSADATA wsaData;
+
+        if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+            fprintf(stderr, "WSAStartup failed.\n");
+            exit(1);
+        }
+
+        if (LOBYTE(wsaData.wVersion) != 2 ||
+            HIBYTE(wsaData.wVersion) != 2)
+        {
+            fprintf(stderr,"Versiion 2.2 of Winsock is not available.\n");
+            WSACleanup();
+            exit(2); 
+        }
+    }
+
+    printf("hellow world!");
+    return(0);
+}
+