c-ipfs/core/ping.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <arpa/inet.h>
#include "libp2p/net/p2pnet.h"
#include "libp2p/net/multistream.h"
#include "libp2p/record/message.h"
#define BUF_SIZE 4096
int ipfs_ping (int argc, char **argv)
{
char* results = NULL;
size_t results_size = 0;
//TODO: handle multiaddress
// the way using multistream
//TODO: Error checking
char* ip = argv[2];
int port = atoi(argv[3]);
int socket_fd = libp2p_net_multistream_connect(ip, port);
if (socket_fd < 0) {
fprintf(stderr, "Unable to connect to %s on port %s", ip, argv[3]);
}
// prepare the PING message
struct Libp2pMessage* msg = libp2p_message_new();
msg->message_type = MESSAGE_TYPE_PING;
size_t protobuf_size = libp2p_message_protobuf_encode_size(msg);
unsigned char protobuf[protobuf_size];
libp2p_message_protobuf_encode(msg, &protobuf[0], protobuf_size, &protobuf_size);
libp2p_net_multistream_send(socket_fd, protobuf, protobuf_size);
libp2p_net_multistream_receive(socket_fd, &results, &results_size);
if (results_size != protobuf_size) {
fprintf(stderr, "PING unsuccessful. Original size: %lu, returned size: %lu\n", protobuf_size, results_size);
return 0;
}
if (memcmp(results, protobuf, protobuf_size) != 0) {
fprintf(stderr, "PING unsuccessful. Results do not match.\n");
return 0;
}
if (msg != NULL)
libp2p_message_free(msg);
fprintf(stdout, "Ping of %s:%s successful.\n", ip, argv[3]);
return 0;
// the old way
/*
int socketfd, i, count=10, tcount = 0;
uint32_t ipv4;
uint16_t port;
char b[BUF_SIZE];
size_t len;
struct timeval time;
long cur_time, old_time;
double ms, total = 0;
if (inet_pton (AF_INET, argv[2], &ipv4) == 0) {
fprintf(stderr, "Unable to use '%s' as an IP address.\n", argv[1]);
return 1;
}
if ((port = atoi(argv[3])) == 0) {
fprintf(stderr, "Unable to use '%s' port.\n", argv[2]);
return 1;
}
if ((socketfd = socket_tcp4()) <= 0) {
perror("can't create socket");
return 1;
}
if (socket_connect4(socketfd, ipv4, port) < 0) {
perror("fail to connect");
return 1;
}
fprintf(stderr, "PING %s.\n", argv[2]);
for (i=0 ; i < count ; i++) {
if (gettimeofday (&time, 0)) return -1;
old_time = 1000000 * time.tv_sec + time.tv_usec;
socket_write(socketfd, "ping", 4, 0);
len = socket_read(socketfd, b, sizeof(b), 0);
if (len == 4 && memcmp(b, "pong", 4) == 0) {
if (gettimeofday (&time, 0)) return -1;
cur_time = 1000000 * time.tv_sec + time.tv_usec;
ms = (cur_time - old_time) / 1000.0;
total += ms; tcount++;
fprintf(stderr, "Pong received: time=%.2f ms\n", ms);
}
sleep (1);
}
fprintf(stderr, "Average latency: %.2fms\n", total / tcount);
return 0;
*/
}