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Implement sock_send_to and sock_recv_from system calls (#1457)

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This commit is contained in:
Marcin Kolny
2022-09-13 02:00:05 +01:00
committed by GitHub
parent 56b4a8bd4c
commit b731ca4668
16 changed files with 844 additions and 254 deletions
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2
samples/socket-api/wasm-src/CMakeLists.txt
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@ -81,3 +81,5 @@ compile_with_clang(tcp_client.c)
compile_with_clang(send_recv.c)
compile_with_clang(addr_resolve.c)
compile_with_clang(socket_opts.c)
compile_with_clang(udp_client.c)
compile_with_clang(udp_server.c)

0
samples/socket-api/wasm-src/tcp_utils.h → samples/socket-api/wasm-src/socket_utils.h
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2
samples/socket-api/wasm-src/tcp_client.c
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@ -2,7 +2,7 @@
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "tcp_utils.h"
#include "socket_utils.h"
#include <arpa/inet.h>
#include <netinet/in.h>

2
samples/socket-api/wasm-src/tcp_server.c
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@ -2,7 +2,7 @@
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "tcp_utils.h"
#include "socket_utils.h"
#include <arpa/inet.h>
#include <netinet/in.h>

82
samples/socket-api/wasm-src/udp_client.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright (C) 2022 Amazon.com Inc. or its affiliates. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#ifdef __wasi__
#include <wasi_socket_ext.h>
#endif
static void
init_sockaddr_inet(struct sockaddr_in *addr)
{
/* 127.0.0.1:1234 */
addr->sin_family = AF_INET;
addr->sin_port = htons(1234);
addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
}
static void
init_sockaddr_inet6(struct sockaddr_in6 *addr)
{
/* [::1]:1234 */
addr->sin6_family = AF_INET6;
addr->sin6_port = htons(1234);
addr->sin6_addr = in6addr_loopback;
}
int
main(int argc, char *argv[])
{
int socket_fd, ret, af;
char buffer[1024] = { 0 };
socklen_t serverlen;
struct sockaddr_storage server_address = { 0 };
const char *message = "Hello from client";
if (argc > 1 && strcmp(argv[1], "inet6") == 0) {
af = AF_INET6;
init_sockaddr_inet6((struct sockaddr_in6 *)&server_address);
serverlen = sizeof(struct sockaddr_in6);
}
else {
af = AF_INET;
init_sockaddr_inet((struct sockaddr_in *)&server_address);
serverlen = sizeof(struct sockaddr_in);
}
printf("[Client] Create socket\n");
socket_fd = socket(af, SOCK_DGRAM, 0);
if (socket_fd == -1) {
perror("Create socket failed");
return EXIT_FAILURE;
}
printf("[Client] Client send\n");
ret = sendto(socket_fd, message, strlen(message), 0,
(struct sockaddr *)&server_address, serverlen);
if (ret < 0) {
close(socket_fd);
perror("Send failed");
return EXIT_FAILURE;
}
printf("[Client] Client receive\n");
serverlen = sizeof(server_address);
ret = recvfrom(socket_fd, buffer, sizeof(buffer), 0,
(struct sockaddr *)&server_address, &serverlen);
if (ret > 0) {
printf("[Client] Buffer recieved: %s\n", buffer);
}
close(socket_fd);
printf("[Client] BYE \n");
return EXIT_SUCCESS;
}

118
samples/socket-api/wasm-src/udp_server.c Normal file
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@ -0,0 +1,118 @@
/*
* Copyright (C) 2022 Amazon.com Inc. or its affiliates. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "socket_utils.h"
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#ifdef __wasi__
#include <wasi_socket_ext.h>
#endif
#define MAX_CONNECTIONS_COUNT 5
static void
init_sockaddr_inet(struct sockaddr_in *addr)
{
/* 0.0.0.0:1234 */
addr->sin_family = AF_INET;
addr->sin_port = htons(1234);
addr->sin_addr.s_addr = htonl(INADDR_ANY);
}
static void
init_sockaddr_inet6(struct sockaddr_in6 *addr)
{
/* [::]:1234 */
addr->sin6_family = AF_INET6;
addr->sin6_port = htons(1234);
addr->sin6_addr = in6addr_any;
}
int
main(int argc, char *argv[])
{
int socket_fd = -1, af;
socklen_t addrlen = 0;
struct sockaddr_storage addr = { 0 };
char *reply_message = "Hello from server";
unsigned connections = 0;
char ip_string[64];
char buffer[1024];
if (argc > 1 && strcmp(argv[1], "inet6") == 0) {
af = AF_INET6;
init_sockaddr_inet6((struct sockaddr_in6 *)&addr);
}
else {
af = AF_INET;
init_sockaddr_inet((struct sockaddr_in *)&addr);
}
printf("[Server] Create socket\n");
socket_fd = socket(af, SOCK_DGRAM, 0);
if (socket_fd < 0) {
perror("Create socket failed");
goto fail;
}
printf("[Server] Bind socket\n");
addrlen = sizeof(addr);
if (bind(socket_fd, (struct sockaddr *)&addr, addrlen) < 0) {
perror("Bind failed");
goto fail;
}
printf("[Server] Wait for clients to connect ..\n");
while (connections < MAX_CONNECTIONS_COUNT) {
int ret = recvfrom(socket_fd, buffer, sizeof(buffer), 0,
(struct sockaddr *)&addr, &addrlen);
if (ret < 0) {
perror("Read failed");
goto fail;
}
if (sockaddr_to_string((struct sockaddr *)&addr, ip_string,
sizeof(ip_string) / sizeof(ip_string[0]))
!= 0) {
printf("[Server] failed to parse client address\n");
goto fail;
}
printf("[Server] received %d bytes from %s: %s\n", ret, ip_string,
buffer);
if (sendto(socket_fd, reply_message, strlen(reply_message), 0,
(struct sockaddr *)&addr, addrlen)
< 0) {
perror("Send failed");
break;
}
connections++;
}
if (connections == MAX_CONNECTIONS_COUNT) {
printf("[Server] Achieve maximum amount of connections\n");
}
printf("[Server] Shuting down ..\n");
shutdown(socket_fd, SHUT_RDWR);
close(socket_fd);
sleep(3);
printf("[Server] BYE \n");
return EXIT_SUCCESS;
fail:
printf("[Server] Shuting down ..\n");
if (socket_fd >= 0)
close(socket_fd);
sleep(3);
return EXIT_FAILURE;
}