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import RT-Thread@9217865c without bsp, libcpu and components/net

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This commit is contained in:
Zihao Yu 2023-05-20 16:23:33 +08:00
commit e2376a3709
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244
examples/network/chargen.c Normal file
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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include <sys/socket.h>
#ifdef SAL_USING_POSIX
#include <sys/select.h> // only dfs_net
#include <dfs_file.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#else
#define read lwip_read
#define write lwip_write
#endif /* SAL_USING_POSIX */
#include "netdb.h"
#define MAX_SERV 32 /* Maximum number of chargen services. Don't need too many */
#define CHARGEN_THREAD_NAME "chargen"
#if RT_THREAD_PRIORITY_MAX == 32
#define CHARGEN_PRIORITY 20 /* Really low priority */
#else
#define CHARGEN_PRIORITY 200 /* Really low priority */
#endif
#define CHARGEN_THREAD_STACKSIZE 1024
struct charcb
{
struct charcb *next;
int socket;
struct sockaddr_in cliaddr;
socklen_t clilen;
char nextchar;
};
static struct charcb *charcb_list = 0;
static int do_read(struct charcb *p_charcb);
static void close_chargen(struct charcb *p_charcb);
extern int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
/**************************************************************
* void chargen_thread(void *arg)
*
* chargen task. This server will wait for connections on well
* known TCP port number: 19. For every connection, the server will
* write as much data as possible to the tcp port.
**************************************************************/
static void chargen_thread(void *arg)
{
int listenfd;
struct sockaddr_in chargen_saddr;
fd_set readset;
fd_set writeset;
int i, maxfdp1;
struct charcb *p_charcb;
/* First acquire our socket for listening for connections */
listenfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
LWIP_ASSERT("chargen_thread(): Socket create failed.", listenfd >= 0);
memset(&chargen_saddr, 0, sizeof(chargen_saddr));
chargen_saddr.sin_family = AF_INET;
chargen_saddr.sin_addr.s_addr = htonl(INADDR_ANY);
chargen_saddr.sin_port = htons(19); // Chargen server port
if (bind(listenfd, (struct sockaddr *) &chargen_saddr, sizeof(chargen_saddr)) == -1)
LWIP_ASSERT("chargen_thread(): Socket bind failed.", 0);
/* Put socket into listening mode */
if (listen(listenfd, MAX_SERV) == -1)
LWIP_ASSERT("chargen_thread(): Listen failed.", 0);
/* Wait forever for network input: This could be connections or data */
for (;;)
{
maxfdp1 = listenfd + 1;
/* Determine what sockets need to be in readset */
FD_ZERO(&readset);
FD_ZERO(&writeset);
FD_SET(listenfd, &readset);
for (p_charcb = charcb_list; p_charcb; p_charcb = p_charcb->next)
{
if (maxfdp1 < p_charcb->socket + 1)
maxfdp1 = p_charcb->socket + 1;
FD_SET(p_charcb->socket, &readset);
FD_SET(p_charcb->socket, &writeset);
}
/* Wait for data or a new connection */
i = select(maxfdp1, &readset, &writeset, 0, 0);
if (i == 0) continue;
/* At least one descriptor is ready */
if (FD_ISSET(listenfd, &readset))
{
/* We have a new connection request!!! */
/* Lets create a new control block */
p_charcb = (struct charcb *)rt_calloc(1, sizeof(struct charcb));
if (p_charcb)
{
p_charcb->socket = accept(listenfd,
(struct sockaddr *) &p_charcb->cliaddr,
&p_charcb->clilen);
if (p_charcb->socket < 0)
rt_free(p_charcb);
else
{
/* Keep this tecb in our list */
p_charcb->next = charcb_list;
charcb_list = p_charcb;
p_charcb->nextchar = 0x21;
}
}
else
{
/* No memory to accept connection. Just accept and then close */
int sock;
struct sockaddr cliaddr;
socklen_t clilen;
sock = accept(listenfd, &cliaddr, &clilen);
if (sock >= 0)
closesocket(sock);
}
}
/* Go through list of connected clients and process data */
for (p_charcb = charcb_list; p_charcb; p_charcb = p_charcb->next)
{
if (FD_ISSET(p_charcb->socket, &readset))
{
/* This socket is ready for reading. This could be because someone typed
* some characters or it could be because the socket is now closed. Try reading
* some data to see. */
if (do_read(p_charcb) < 0)
break;
}
if (FD_ISSET(p_charcb->socket, &writeset))
{
char line[80];
char setchar = p_charcb->nextchar;
for (i = 0; i < 59; i++)
{
line[i] = setchar;
if (++setchar == 0x7f)
setchar = 0x21;
}
line[i] = 0;
strcat(line, "\n\r");
if (write(p_charcb->socket, line, strlen(line)) < 0)
{
close_chargen(p_charcb);
break;
}
if (++p_charcb->nextchar == 0x7f)
p_charcb->nextchar = 0x21;
}
}
}
}
/**************************************************************
* void close_chargen(struct charcb *p_charcb)
*
* Close the socket and remove this charcb from the list.
**************************************************************/
static void close_chargen(struct charcb *p_charcb)
{
struct charcb *p_search_charcb;
/* Either an error or tcp connection closed on other
* end. Close here */
closesocket(p_charcb->socket);
/* Free charcb */
if (charcb_list == p_charcb)
charcb_list = p_charcb->next;
else
for (p_search_charcb = charcb_list; p_search_charcb; p_search_charcb = p_search_charcb->next)
{
if (p_search_charcb->next == p_charcb)
{
p_search_charcb->next = p_charcb->next;
break;
}
}
rt_free(p_charcb);
}
/**************************************************************
* void do_read(struct charcb *p_charcb)
*
* Socket definitely is ready for reading. Read a buffer from the socket and
* discard the data. If no data is read, then the socket is closed and the
* charcb is removed from the list and freed.
**************************************************************/
static int do_read(struct charcb *p_charcb)
{
char buffer[80];
int readcount;
/* Read some data */
readcount = read(p_charcb->socket, &buffer, 80);
if (readcount <= 0)
{
close_chargen(p_charcb);
return -1;
}
return 0;
}
void chargen_init(void)
{
rt_thread_t chargen;
chargen = rt_thread_create(CHARGEN_THREAD_NAME,
chargen_thread, RT_NULL,
CHARGEN_THREAD_STACKSIZE,
CHARGEN_PRIORITY, 5);
if (chargen != RT_NULL) rt_thread_startup(chargen);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
void chargen()
{
chargen_init();
}
FINSH_FUNCTION_EXPORT(chargen, start chargen server);
#endif

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examples/network/tcp_client.py Normal file
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# -*- coding: utf-8 -*-
import socket
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect(('192.168.10.110',6001))
print s.recv(1024)
for data in ['rtt_nano','rtt_thread','rtt_bsp']:
s.send(data)
print s.recv(1024)
s.send('exit')
s.close()

34
examples/network/tcp_server.py Normal file
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# -*- coding: utf-8 -*-
#引入模块
import socket
import threading
import time
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 监听端口:
s.bind(('192.168.10.110', 6001))
s.listen(5)
print 'Waiting for connection...'
def tcp_link(sock,addr):
print 'Accept new connection from %s:%s...' % addr
sock.send('Welcome to RT-Thread!')
while True:
data=sock.recv(1024)
time.sleep(1)
if data=='exit' or not data:
break
print data
sock.send('Hello,%s!'%data)
sock.close()
print 'Connection from %s:%s closed.'%addr
while True:
#接受一个新连接
sock,addr=s.accept()
#创建新线程来处理TCP连接
t=threading.Thread(target=tcp_link(sock,addr))

260
examples/network/tcpclient.c Normal file
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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-01-24 ChungHsuan improve code comments
*/
#include <rtthread.h>
#include <string.h>
#if !defined(SAL_USING_POSIX)
#error "Please enable SAL_USING_POSIX!"
#else
#include <sys/time.h>
#include <sys/select.h>
#endif
#include <sys/socket.h> /* socket.h header file is needed when using BSD socket */ /* 使用BSD socket，需要包含socket.h头文件 */
#include "netdb.h"
#define DEBUG_TCP_CLIENT
#define DBG_TAG "TCP"
#ifdef DEBUG_TCP_CLIENT
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO /* DBG_ERROR */
#endif
#include <rtdbg.h>
#define BUFSZ 1024
static int started = 0;
static int is_running = 0;
static char url[256];
static int port = 8080;
static const char send_data[] = "This is TCP Client from RT-Thread."; /* The message be sent */ /* 发送用到的数据 */
/**
* @brief This function is for creating a tcp client on RT-Thread
*/
static void tcpclient(void *arg)
{
int ret;
char *recv_data;
int bytes_received;
int sock = -1;
struct hostent *host = RT_NULL;
struct sockaddr_in server_addr;
struct timeval timeout;
fd_set readset;
/* Get host address by parameter url(Domain name resolution if input domain) */
/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
host = gethostbyname(url);
if (host == RT_NULL)
{
LOG_E("Get host by name failed!");
return;
}
/* Allocate space for recv_data */
/* 分配用于存放接收数据的缓冲 */
recv_data = rt_malloc(BUFSZ);
if (recv_data == RT_NULL)
{
LOG_E("No memory");
return;
}
/* Create a socket and set it to SOCK_STREAM(TCP) */
/* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
/* Failed on creating socket */
/* 创建socket失败 */
LOG_E("Create socket error");
goto __exit;
}
/* Initialize server side address */
/* 初始化预连接的服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
/* Connect to server */
/* 连接到服务端 */
if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
{
/* Failed on connecting to server */
/* 连接失败 */
LOG_E("Connect fail!");
goto __exit;
}
started = 1;
is_running = 1;
timeout.tv_sec = 3;
timeout.tv_usec = 0;
while (is_running)
{
FD_ZERO(&readset);
FD_SET(sock, &readset);
/* Wait for read */
if (select(sock + 1, &readset, RT_NULL, RT_NULL, &timeout) == 0)
continue;
/* Receive the maximum size 1024 bytes from socket */
/* 从sock连接中接收最大BUFSZ - 1字节数据 */
bytes_received = recv(sock, recv_data, BUFSZ - 1, 0);
if (bytes_received < 0)
{
/* Receive failed and close the connection */
/* 接收失败，关闭这个连接 */
LOG_E("Received error, close the socket.");
goto __exit;
}
else if (bytes_received == 0)
{
/* Print warning message when recv function returns 0 */
/* 打印recv函数返回值为0的警告信息 */
LOG_W("Received warning, recv function returns 0.");
continue;
}
else
{
/* Receive data successfully and append '\0' at the end of message */
/* 有接收到数据，把末端清零 */
recv_data[bytes_received] = '\0';
if (rt_strcmp(recv_data, "q") == 0 || rt_strcmp(recv_data, "Q") == 0)
{
/* If the first letter is 'q' or 'Q', close the connection */
/* 如果是首字母是q或Q，关闭这个连接 */
LOG_I("Got a 'q' or 'Q', close the socket.");
goto __exit;
}
else
{
/* Show the message in terminal */
/* 在控制终端显示收到的数据 */
LOG_D("Received data = %s", recv_data);
}
}
/* Send message to connected socket */
/* 发送数据到sock连接 */
ret = send(sock, send_data, rt_strlen(send_data), 0);
if (ret < 0)
{
/* Send failed, close the connection */
/* 发送失败，关闭这个连接 */
LOG_I("send error, close the socket.");
goto __exit;
}
else if (ret == 0)
{
/* Print warning message when send function returns 0 */
/* 打印send函数返回值为0的警告信息 */
LOG_W("Send warning, send function returns 0.");
}
}
__exit:
if (recv_data)
{
rt_free(recv_data);
recv_data = RT_NULL;
}
if (sock >= 0)
{
closesocket(sock);
sock = -1;
}
started = 0;
is_running = 0;
return;
}
/**
* @brief The usage description of tcp client on rt-Thread
*/
static void usage(void)
{
rt_kprintf("Usage: tcpclient -h <host> -p <port>\n");
rt_kprintf(" tcpclient --stop\n");
rt_kprintf(" tcpclient --help\n");
rt_kprintf("\n");
rt_kprintf("Miscellaneous:\n");
rt_kprintf(" -h Specify host address\n");
rt_kprintf(" -p Specify the host port number\n");
rt_kprintf(" --stop Stop tcpclient program\n");
rt_kprintf(" --help Print help information\n");
}
/**
* @brief This function is for testing tcp client on rt-Thread
*/
static void tcpclient_test(int argc, char** argv)
{
rt_thread_t tid;
if (argc == 1 || argc > 5)
{
LOG_I("Please check the command you entered!\n");
goto __usage;
}
else
{
if (rt_strcmp(argv[1], "--help") == 0)
{
goto __usage;
}
else if (rt_strcmp(argv[1], "--stop") == 0)
{
is_running = 0;
return;
}
else if (rt_strcmp(argv[1], "-h") == 0 && rt_strcmp(argv[3], "-p") == 0)
{
if (started)
{
LOG_I("The tcpclient has started!");
LOG_I("Please stop tcpclient firstly, by: tcpclient --stop");
return;
}
if (rt_strlen(argv[2]) > sizeof(url))
{
LOG_E("The input url is too long, max %d bytes!", sizeof(url));
return;
}
rt_memset(url, 0x0, sizeof(url));
rt_strncpy(url, argv[2], rt_strlen(argv[2]));
port = atoi(argv[4]);
}
else
{
goto __usage;
}
}
tid = rt_thread_create("tcp_client",
tcpclient, RT_NULL,
2048, RT_THREAD_PRIORITY_MAX/3, 20);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
return;
__usage:
usage();
}
#ifdef RT_USING_FINSH
MSH_CMD_EXPORT_ALIAS(tcpclient_test, tcpclient,
Start a tcp client. Help: tcpclient --help);
#endif

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examples/network/tcpsendpacket.c Normal file
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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include <netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */
#include <sys/socket.h> /* 使用BSD socket，需要包含socket.h头文件 */
void tcp_senddata(const char *url, int port, int length)
{
struct hostent *host;
int sock, err, result, timeout, index;
struct sockaddr_in server_addr;
rt_uint8_t *buffer_ptr;
/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
host = gethostbyname(url);
/* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
/* 创建socket失败 */
rt_kprintf("Socket error\n");
return;
}
/* 申请内存 */
buffer_ptr = rt_malloc(length);
if(RT_NULL == buffer_ptr)
{
/* 申请内存失败 */
rt_kprintf("No memory\n");
return;
}
/* 构造发送数据 */
for (index = 0; index < length; index ++)
buffer_ptr[index] = index & 0xff;
timeout = 100;
/* 设置发送超时时间100ms */
setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
/* 初始化预连接的服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
/* 连接到服务端 */
err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
rt_kprintf("TCP thread connect error code: %d\n", err);
while (1)
{
/* 发送数据到sock连接 */
result = send(sock, buffer_ptr, length, MSG_DONTWAIT);
if (result < 0) //数据发送错误处理
{
rt_kprintf("TCP thread send error: %d\n", result);
closesocket(sock);
/* 关闭连接，重新创建连接 */
rt_thread_delay(10);
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
rt_kprintf("TCP Socket error:%d\n", sock);
err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
rt_kprintf("TCP thread connect error code: %d\n", err);
}
else if (result == 0)
{
/* 打印send函数返回值为0的警告信息 */
rt_kprintf("\n Send warning,send function returns 0.\r\n");
}
}
}
#ifdef RT_USING_FINSH
#include <finsh.h>
/* 输出tcpclient函数到finsh shell中 */
FINSH_FUNCTION_EXPORT(tcp_senddata, send a packet through tcp connection);
#endif

286
examples/network/tcpserver.c Normal file
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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-01-24 ChungHsuan improve code comments
*/
#include <rtthread.h>
#include <string.h>
#if !defined(SAL_USING_POSIX)
#error "Please enable SAL_USING_POSIX!"
#else
#include <sys/time.h>
#include <sys/select.h>
#endif
#include <sys/socket.h> /* socket.h header file is needed when using BSD socket */ /* 使用BSD socket，需要包含socket.h头文件 */
#include "netdb.h"
#define DEBUG_TCP_SERVER
#define DBG_TAG "TCP"
#ifdef DEBUG_TCP_SERVER
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO /* DBG_ERROR */
#endif
#include <rtdbg.h>
#define BUFSZ (1024)
static int started = 0;
static int is_running = 0;
static int port = 5000;
static const char send_data[] = "This is TCP Server from RT-Thread."; /* The message be sent */ /* 发送用到的数据 */
/**
* @brief This function is for creating a tcp server on RT-Thread
*/
static void tcpserv(void *arg)
{
int ret;
char *recv_data; /* recv_data is a pointer used to receive data */ /* 用于接收的指针，后面会做一次动态分配以请求可用内存 */
int sock, connected, bytes_received;
struct sockaddr_in server_addr, client_addr;
struct timeval timeout;
fd_set readset, readset_c;
socklen_t sin_size = sizeof(struct sockaddr_in);
recv_data = rt_malloc(BUFSZ + 1);/* Allocate space for recv_data */ /* 分配接收用的数据缓冲 */
if (recv_data == RT_NULL)
{
LOG_E("No memory");
return;
}
/* Before making use of socket, socket should be created first and set the socket created to SOCK_STREAM(TCP) */
/* 一个socket在使用前，需要预先创建出来，指定SOCK_STREAM为TCP的socket */
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
LOG_E("Create socket error");
goto __exit;
}
/* Initialize server side address */
/* 初始化服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port); /*Server side port number*//* 服务端工作的端口 */
server_addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(server_addr.sin_zero), 0x0, sizeof(server_addr.sin_zero));
/* Bind socket to server side address */
/* 绑定socket到服务端地址 */
if (bind(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
{
LOG_E("Unable to bind");
goto __exit;
}
/* Listen on socket */
/* 在socket上进行监听 */
if (listen(sock, 10) == -1)
{
LOG_E("Listen error");
goto __exit;
}
LOG_I("\nTCPServer Waiting for client on port %d...\n", port);
started = 1;
is_running = 1;
timeout.tv_sec = 3;
timeout.tv_usec = 0;
while (is_running)
{
FD_ZERO(&readset);
FD_SET(sock, &readset);
LOG_I("Waiting for a new connection...");
/* Wait for read or write */
if (select(sock + 1, &readset, RT_NULL, RT_NULL, &timeout) == 0)
continue;
/* Accept a request from client and the function is blocking */
/* 接受一个客户端连接socket的请求，这个函数调用是阻塞式的 */
connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);
/* Return the socket connected successfully */
/* 返回的是连接成功的socket */
if (connected < 0)
{
LOG_E("accept connection failed! errno = %d", errno);
continue;
}
/* Accept the message which points by client address */
/* 接受返回的client_addr指向了客户端的地址信息 */
LOG_I("I got a connection from (%s , %d)\n",
inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
/* Handle method of client connection */
/* 客户端连接的处理 */
while (is_running)
{
FD_ZERO(&readset_c);
FD_SET(connected, &readset_c);
/* Wait for read or write */
if (select(connected + 1, &readset_c, RT_NULL, RT_NULL, &timeout) == 0)
continue;
/* Receive message from connected socket. Buffer size is 1024 bytes,but it's not guranteed to receive size exactly 1024 */
/* 从connected socket中接收数据，接收buffer是1024大小，但并不一定能够收到1024大小的数据 */
bytes_received = recv(connected, recv_data, BUFSZ, 0);
if (bytes_received < 0)
{
LOG_E("Received error, close the connect.");
closesocket(connected);
connected = -1;
break;
}
else if (bytes_received == 0)
{
/* Print warning message when recv function returns 0 */
/* 打印recv函数返回值为0的警告信息 */
LOG_W("Received warning, recv function returns 0.");
continue;
}
else
{ /* Receive data successfully and append '\0' at the end of message */
/* 有接收到数据，把末端清零 */
recv_data[bytes_received] = '\0';
if (strcmp(recv_data, "q") == 0 || strcmp(recv_data, "Q") == 0)
{
/* If the first letter is 'q' or 'Q', close the connection */
/* 如果是首字母是q或Q，关闭这个连接 */
LOG_I("Got a 'q' or 'Q', close the connect.");
closesocket(connected);
connected = -1;
break;
}
else if (strcmp(recv_data, "exit") == 0)
{
/* If the message received is 'exit', close the whole server side. */
/* 如果接收的是exit，则关闭整个服务端 */
closesocket(connected);
connected = -1;
goto __exit;
}
else
{
/* Show the message in terminal */
/* 在控制终端显示收到的数据 */
LOG_D("Received data = %s", recv_data);
}
}
/* Send message to connected socket */
/* 发送数据到connected socket */
ret = send(connected, send_data, rt_strlen(send_data), 0);
if (ret < 0)
{
LOG_E("send error, close the connect.");
closesocket(connected);
connected = -1;
break;
}
else if (ret == 0)
{
/* Print warning message when send function returns 0 */
/* 打印send函数返回值为0的警告信息 */
LOG_W("Send warning, send function returns 0.");
}
}
}
__exit:
if (recv_data)
{
rt_free(recv_data);
recv_data = RT_NULL;
}
if (connected >= 0)
{
closesocket(connected);
connected = -1;
}
if (sock >= 0)
{
closesocket(sock);
sock = -1;
}
started = 0;
is_running = 0;
return;
}
/**
* @brief The usage description of tcp server on rt-Thread
*/
static void usage(void)
{
rt_kprintf("Usage: tcpserver -p <port>\n");
rt_kprintf(" tcpserver --stop\n");
rt_kprintf(" tcpserver --help\n");
rt_kprintf("\n");
rt_kprintf("Miscellaneous:\n");
rt_kprintf(" -p Specify the host port number\n");
rt_kprintf(" --stop Stop tcpserver program\n");
rt_kprintf(" --help Print help information\n");
}
/**
* @brief This function is for testing tcp server on rt-Thread
*/
static void tcpserver_test(int argc, char** argv)
{
rt_thread_t tid;
if (argc == 1 || argc > 3)
{
LOG_I("Please check the command you entered!\n");
goto __usage;
}
else
{
if (rt_strcmp(argv[1], "--help") == 0)
{
goto __usage;
}
else if (rt_strcmp(argv[1], "--stop") == 0)
{
is_running = 0;
return;
}
else if (rt_strcmp(argv[1], "-p") == 0)
{
if (started)
{
LOG_I("The tcpserver has started!");
LOG_I("Please stop tcpserver firstly, by: tcpserver --stop");
return;
}
port = atoi(argv[2]);
}
else
{
goto __usage;
}
}
tid = rt_thread_create("tcp_serv",
tcpserv, RT_NULL,
2048, RT_THREAD_PRIORITY_MAX/3, 20);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
return;
__usage:
usage();
}
#ifdef RT_USING_FINSH
MSH_CMD_EXPORT_ALIAS(tcpserver_test, tcpserver,
Start a tcp server. Help: tcpserver --help);
#endif

182
examples/network/udpclient.c Normal file
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@ -0,0 +1,182 @@
/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-01-24 ChungHsuan improve code comments
*/
#include <rtthread.h>
#include <sys/socket.h> /* socket.h header file is needed when using BSD socket */ /* 使用BSD socket，需要包含sockets.h头文件 */
#include "netdb.h"
#define DEBUG_UDP_CLIENT
#define DBG_TAG "UDP"
#ifdef DEBUG_UDP_CLIENT
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO /* DBG_ERROR */
#endif
#include <rtdbg.h>
static int started = 0;
static int is_running = 0;
static char url[256];
static int port = 8080;
static int count = 10;
const char send_data[] = "This is UDP Client from RT-Thread.\n";/* The message be sent */ /* 发送用到的数据 */
/**
* @brief This function is for creating a udp client on RT-Thread
*/
static void udpclient(void *arg)
{
int sock;
struct hostent *host;
struct sockaddr_in server_addr;
/* Get host address by parameter URL (domain name resolution if input domain) */
/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
host = (struct hostent *) gethostbyname(url);
if (host == RT_NULL)
{
LOG_E("Get host by name failed!");
return;
}
/* Create a socket and set it to SOCK_DGRAM(UDP) */
/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
{
/* Failed on creating socket */
LOG_E("Create socket error");
return;
}
/* Initialize server side address */
/* 初始化预连接的服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
started = 1;
is_running = 1;
/* The total sending number(count) */
/* 总计发送count次数据 */
while (count && is_running)
{
/* Send message to server side */
/* 发送数据到服务远端 */
sendto(sock, send_data, rt_strlen(send_data), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
/* Thread sleep for 1 second */
/* 线程休眠一段时间 */
rt_thread_mdelay(1000);
/* count decrease 1 */
/* 计数值减一 */
count --;
}
if (count == 0)
{
LOG_I("UDP client send data finished!");
}
/* Close the socket */
/* 关闭这个socket */
if (sock >= 0)
{
closesocket(sock);
sock = -1;
}
started = 0;
is_running = 0;
}
/**
* @brief The usage description of udp client on rt-Thread
*/
static void usage(void)
{
rt_kprintf("Usage: udpclient -h <host> -p <port> [--cnt] [count]\n");
rt_kprintf(" udpclient --stop\n");
rt_kprintf(" udpclient --help\n");
rt_kprintf("\n");
rt_kprintf("Miscellaneous:\n");
rt_kprintf(" -h Specify host address\n");
rt_kprintf(" -p Specify the host port number\n");
rt_kprintf(" --cnt Specify the send data count\n");
rt_kprintf(" --stop Stop udpclient program\n");
rt_kprintf(" --help Print help information\n");
}
/**
* @brief This function is for testing udp client on rt-Thread
*/
static void udpclient_test(int argc, char** argv)
{
rt_thread_t tid;
if (argc == 1 || argc > 7)
{
LOG_I("Please check the command you entered!\n");
goto __usage;
}
else
{
if (rt_strcmp(argv[1], "--help") == 0)
{
goto __usage;
}
else if (rt_strcmp(argv[1], "--stop") == 0)
{
is_running = 0;
return;
}
else if (rt_strcmp(argv[1], "-h") == 0 && rt_strcmp(argv[3], "-p") == 0)
{
if (started)
{
LOG_I("The udpclient has started!");
LOG_I("Please stop udpclient firstly, by: udpclient --stop");
return;
}
if (argc == 7 && rt_strcmp(argv[6], "--cnt") == 0)
{
count = atoi(argv[7]);
}
if (rt_strlen(argv[2]) > sizeof(url))
{
LOG_E("The input url is too long, max %d bytes!", sizeof(url));
return;
}
rt_memset(url, 0x0, sizeof(url));
rt_strncpy(url, argv[2], rt_strlen(argv[2]));
port = atoi(argv[4]);
}
else
{
goto __usage;
}
}
tid = rt_thread_create("udp_client",
udpclient, RT_NULL,
2048, RT_THREAD_PRIORITY_MAX/3, 20);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
return;
__usage:
usage();
}
#ifdef RT_USING_FINSH
MSH_CMD_EXPORT_ALIAS(udpclient_test, udpclient,
Start a udp client. Help: udpclient --help);
#endif

214
examples/network/udpserver.c Normal file
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@ -0,0 +1,214 @@
/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-01-24 ChungHsuan improve code comments
*/
#include <rtthread.h>
#include <string.h>
#if !defined(SAL_USING_POSIX)
#error "Please enable SAL_USING_POSIX!"
#else
#include <sys/time.h>
#include <sys/select.h>
#endif
#include <sys/socket.h> /* socket.h header file is needed when using BSD socket */ /* 使用BSD socket，需要包含socket.h头文件 */
#include "netdb.h"
#define DEBUG_UDP_SERVER
#define DBG_TAG "UDP"
#ifdef DEBUG_UDP_SERVER
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO /* DBG_ERROR */
#endif
#include <rtdbg.h>
#define BUFSZ 1024
static int started = 0;
static int is_running = 0;
static int port = 5000;
/**
* @brief This function is for creating a udp server on RT-Thread
*/
static void udpserv(void *paramemter)
{
int sock;
int bytes_read;
char *recv_data;
socklen_t addr_len;
struct sockaddr_in server_addr, client_addr;
struct timeval timeout;
fd_set readset;
/* Allocate space for recv_data */
/* 分配接收用的数据缓冲 */
recv_data = rt_malloc(BUFSZ);
if (recv_data == RT_NULL)
{
LOG_E("No memory");
return;
}
/* Create a socket and set it to SOCK_DGRAM(UDP) */
/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
LOG_E("Create socket error");
goto __exit;
}
/* Initialize server side address */
/* 初始化服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
/* Bind socket to server side address */
/* 绑定socket到服务端地址 */
if (bind(sock, (struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1)
{
LOG_E("Unable to bind");
goto __exit;
}
addr_len = sizeof(struct sockaddr);
LOG_I("UDPServer Waiting for client on port %d...", port);
started = 1;
is_running = 1;
timeout.tv_sec = 3;
timeout.tv_usec = 0;
while (is_running)
{
FD_ZERO(&readset);
FD_SET(sock, &readset);
/* Wait for read or write */
if (select(sock + 1, &readset, RT_NULL, RT_NULL, &timeout) == 0)
continue;
/* The maximum size received from sock is BUFSZ-1 bytes*/
/* 从sock中收取最大BUFSZ - 1字节数据 */
bytes_read = recvfrom(sock, recv_data, BUFSZ - 1, 0,
(struct sockaddr *)&client_addr, &addr_len);
if (bytes_read < 0)
{
LOG_E("Received error, close the connect.");
goto __exit;
}
else if (bytes_read == 0)
{
LOG_W("Received warning, recv function returns 0.");
continue;
}
else
{
recv_data[bytes_read] = '\0'; /* Append '\0' at the end of message *//* 把末端清零 */
/* Output received message */
/* 输出接收的数据 */
LOG_D("Received data = %s", recv_data);
/* If the message received is 'exit', quit. */
/* 如果接收数据是exit，退出 */
if (strcmp(recv_data, "exit") == 0)
{
goto __exit;
}
}
}
__exit:
if (recv_data)
{
rt_free(recv_data);
recv_data = RT_NULL;
}
if (sock >= 0)
{
closesocket(sock);
sock = -1;
}
started = 0;
is_running = 0;
}
/**
* @brief The usage description of udp server on rt-Thread
*/
static void usage(void)
{
rt_kprintf("Usage: udpserver -p <port>\n");
rt_kprintf(" udpserver --stop\n");
rt_kprintf(" udpserver --help\n");
rt_kprintf("\n");
rt_kprintf("Miscellaneous:\n");
rt_kprintf(" -p Specify the host port number\n");
rt_kprintf(" --stop Stop udpserver program\n");
rt_kprintf(" --help Print help information\n");
}
/**
* @brief This function is for testing udp server on rt-Thread
*/
static void udpserver_test(int argc, char** argv)
{
rt_thread_t tid;
if (argc == 1 || argc > 3)
{
LOG_I("Please check the command you entered!\n");
goto __usage;
}
else
{
if (rt_strcmp(argv[1], "--help") == 0)
{
goto __usage;
}
else if (rt_strcmp(argv[1], "--stop") == 0)
{
is_running = 0;
return;
}
else if (rt_strcmp(argv[1], "-p") == 0)
{
if (started)
{
LOG_I("The udpserver has started!");
LOG_I("Please stop udpserver firstly, by: udpserver --stop");
return;
}
port = atoi(argv[2]);
}
else
{
goto __usage;
}
}
tid = rt_thread_create("udp_serv",
udpserv, RT_NULL,
2048, RT_THREAD_PRIORITY_MAX/3, 20);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
return;
__usage:
usage();
}
#ifdef RT_USING_FINSH
MSH_CMD_EXPORT_ALIAS(udpserver_test, udpserver,
Start a udp server. Help: udpserver --help);
#endif