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https://github.com/bytecodealliance/wasm-micro-runtime.git
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78b5c5b484
Implement more socket APIs, refer to #1336 and below PRs: - Implement wasi_addr_resolve function (#1319) - Fix socket-api byte order issue when host/network order are the same (#1327) - Enhance sock_addr_local syscall (#1320) - Implement sock_addr_remote syscall (#1360) - Add support for IPv6 in WAMR (#1411) - Implement ns lookup allowlist (#1420) - Implement sock_send_to and sock_recv_from system calls (#1457) - Added http downloader and multicast socket options (#1467) - Fix `bind()` calls to receive the correct size of `sockaddr` structure (#1490) - Assert on correct parameters (#1505) - Copy only received bytes from socket recv buffer into the app buffer (#1497) Co-authored-by: Marcin Kolny <mkolny@amazon.com> Co-authored-by: Marcin Kolny <marcin.kolny@gmail.com> Co-authored-by: Callum Macmillan <callumimacmillan@gmail.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
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* Copyright (C) 2022 Amazon.com, Inc. or its affiliates. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <arpa/inet.h>
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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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#ifdef __wasi__
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#include <wasi_socket_ext.h>
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#else
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#include <netdb.h>
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#endif
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int
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lookup_host(const char *host)
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{
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struct addrinfo hints, *res, *result;
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int errcode;
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char addrstr[100];
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void *ptr;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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errcode = getaddrinfo(host, NULL, &hints, &result);
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if (errcode != 0) {
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perror("getaddrinfo");
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return -1;
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}
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res = result;
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printf("Host: %s\n", host);
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while (res) {
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switch (res->ai_family) {
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case AF_INET:
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ptr = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
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break;
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case AF_INET6:
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ptr = &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
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break;
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default:
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printf("Unsupported address family: %d\n", res->ai_family);
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continue;
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}
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inet_ntop(res->ai_family, ptr, addrstr, 100);
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printf("IPv%d address: %s (%s)\n", res->ai_family == AF_INET6 ? 6 : 4,
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addrstr, res->ai_socktype == SOCK_STREAM ? "TCP" : "UDP");
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res = res->ai_next;
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}
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freeaddrinfo(result);
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return EXIT_SUCCESS;
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}
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int
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main(int argc, char *argv[])
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{
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if (argc < 2) {
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printf("Usage: %s DOMAIN\n", argv[0]);
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return EXIT_FAILURE;
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}
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return lookup_host(argv[1]);
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}
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