| ... | ... |
@@ -23,4 +23,6 @@ Utilities to check NTP resolution |
| 23 | 23 |
- Kerlink iFemto Legacy |
| 24 | 24 |
- riscv64 |
| 25 | 25 |
- Lichee Nano RV |
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+- win64 |
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+ - ntpprint only Windows 10 & Windows 11 |
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| 26 | 28 |
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| ... | ... |
@@ -0,0 +1,6 @@ |
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+#!/bin/bash |
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+OUTPUTDIR="win64" |
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+mkdir -p $OUTPUTDIR |
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+x86_64-w64-mingw32-gcc-posix -O2 -o $OUTPUTDIR/ntpprint ntpprint-win.c -lws2_32 -Wl,-subsystem,console |
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+x86_64-w64-mingw32-strip $OUTPUTDIR/* |
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+ |
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@@ -0,0 +1,109 @@ |
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+#include <stdio.h> |
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+#include <stdlib.h> |
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+#include <string.h> |
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+#include <winsock2.h> |
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+#include <windows.h> |
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+#include <time.h> |
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+ |
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+#pragma comment(lib, "ws2_32.lib") |
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+ |
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+#define NTP_TIMESTAMP_DELTA 2208988800ull |
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+ |
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+typedef struct {
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+ unsigned char li_vn_mode; // Eight bits. li, vn, and mode. |
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+ unsigned char stratum; // Stratum level of the local clock. |
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+ unsigned char poll; // Maximum interval between successive messages. |
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+ unsigned char precision; // Precision of the local clock. |
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+ |
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+ unsigned int rootDelay; |
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+ unsigned int rootDispersion; |
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+ unsigned int refId; |
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+ |
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+ unsigned int refTm_s; |
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+ unsigned int refTm_f; |
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+ |
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+ unsigned int origTm_s; |
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+ unsigned int origTm_f; |
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+ |
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+ unsigned int rxTm_s; |
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+ unsigned int rxTm_f; |
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+ |
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+ unsigned int txTm_s; |
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+ unsigned int txTm_f; |
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+} NTPPacket; |
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+ |
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+int main(int argc, char *argv[]) {
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+ if (argc < 2) {
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+ printf("Usage: %s <ntp_server>\n", argv[0]);
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+ return 1; |
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+ } |
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+ |
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+ const char* ntp_server = argv[1]; |
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+ WSADATA wsaData; |
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+ SOCKET sock; |
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+ struct sockaddr_in serverAddr; |
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+ NTPPacket packet; |
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+ |
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+ WSAStartup(MAKEWORD(2, 2), &wsaData); |
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+ |
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+ memset(&packet, 0, sizeof(NTPPacket)); |
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+ packet.li_vn_mode = 0x1B; // LI = 0, VN = 3 (version), Mode = 3 (client) |
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+ |
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+ sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
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+ if (sock == INVALID_SOCKET) {
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+ perror("socket");
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+ return 1; |
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+ } |
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+ |
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+ struct timeval timeout; |
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+ timeout.tv_sec = 5; |
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+ timeout.tv_usec = 0; |
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+ setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeout, sizeof(timeout)); |
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+ |
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+ struct hostent* server = gethostbyname(ntp_server); |
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+ if (!server) {
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+ printf("Error: Cannot resolve hostname %s\n", ntp_server);
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+ closesocket(sock); |
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+ WSACleanup(); |
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+ return 1; |
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+ } |
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+ |
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+ memset(&serverAddr, 0, sizeof(serverAddr)); |
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+ serverAddr.sin_family = AF_INET; |
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+ serverAddr.sin_port = htons(123); // NTP port |
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+ memcpy(&serverAddr.sin_addr, server->h_addr, server->h_length); |
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+ |
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+ int sent = sendto(sock, (char*)&packet, sizeof(NTPPacket), 0, |
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+ (struct sockaddr*)&serverAddr, sizeof(serverAddr)); |
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+ if (sent == SOCKET_ERROR) {
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+ perror("sendto");
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+ closesocket(sock); |
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+ WSACleanup(); |
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+ return 1; |
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+ } |
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+ |
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+ struct sockaddr_in recvAddr; |
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+ int recvAddrLen = sizeof(recvAddr); |
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+ int recvLen = recvfrom(sock, (char*)&packet, sizeof(NTPPacket), 0, |
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+ (struct sockaddr*)&recvAddr, &recvAddrLen); |
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+ if (recvLen == SOCKET_ERROR) {
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+ //perror("recvfrom");
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+ if (WSAGetLastError() == WSAETIMEDOUT) {
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+ printf("Timeout: No response from NTP server within 5 seconds.\n");
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+ } else {
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+ perror("recvfrom");
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+ } |
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+ closesocket(sock); |
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+ WSACleanup(); |
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+ return 1; |
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+ } |
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+ |
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+ packet.txTm_s = ntohl(packet.txTm_s); // Convert from network byte order |
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+ time_t txTime = (time_t)(packet.txTm_s - NTP_TIMESTAMP_DELTA); |
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+ |
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+ printf("Received time: %s", ctime(&txTime));
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+ |
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+ closesocket(sock); |
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+ WSACleanup(); |
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+ return 0; |
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+} |