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Basic sockets (0.21.0)

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This commit is contained in:
Johannes Findeisen 2025-10-04 02:52:30 +02:00
commit d546632cd4
19 changed files with 667 additions and 4 deletions
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src/vm/os/socket_tcp_connect.c Normal file
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/**
* This file is part of the Fun programming language.
* https://hanez.org/project/fun/
*
* Copyright 2025 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the Apache-2.0 license.
* https://opensource.org/license/apache-2-0
*
* Added: 2025-10-04
*/
#include <stdlib.h>
#include <string.h>
#ifdef __unix__
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#endif
case OP_SOCK_TCP_CONNECT: {
/* Pops port, host; pushes fd (>0) or 0 */
Value portv = pop_value(vm);
Value hostv = pop_value(vm);
int fd = 0;
#ifdef __unix__
if (hostv.type != VAL_STRING || portv.type != VAL_INT) {
fprintf(stderr, "Runtime type error: tcp_connect expects (string host, int port)\n");
free_value(portv);
free_value(hostv);
push_value(vm, make_int(0));
break;
}
char *host = value_to_string_alloc(&hostv);
int port = (int)portv.i;
if (host) {
char portstr[16];
snprintf(portstr, sizeof(portstr), "%d", port);
struct addrinfo hints, *res = NULL, *rp;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if (getaddrinfo(host, portstr, &hints, &res) == 0) {
for (rp = res; rp != NULL; rp = rp->ai_next) {
int s = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (s < 0) continue;
if (connect(s, rp->ai_addr, rp->ai_addrlen) == 0) { fd = s; break; }
close(s);
}
if (res) freeaddrinfo(res);
}
free(host);
}
#endif
free_value(portv);
free_value(hostv);
push_value(vm, make_int(fd > 0 ? fd : 0));
break;
}