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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@536 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2010-03-24 15:26:48 +00:00
parent 7606f6d952
commit cd039a8b49
6 changed files with 300 additions and 245 deletions
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examples/network/tcpclient.c
+71 -57
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@@ -1,81 +1,95 @@
#include <rtthread.h>
#include <lwip/netdb.h>
#include <lwip/sockets.h>
#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */
#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
static const char send_data[] = "This is TCP Client from RT-Thread.";
static const char send_data[] = "This is TCP Client from RT-Thread."; /* 发送用到的数据 */
void tcpclient(const char* url, int port)
{
char *recv_data;
struct hostent *host;
int sock, bytes_received;
struct sockaddr_in server_addr;
char *recv_data;
struct hostent *host;
int sock, bytes_received;
struct sockaddr_in server_addr;
host = gethostbyname(url);
/* 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);
recv_data = rt_malloc(1024);
if (recv_data == RT_NULL)
{
rt_kprintf("No memory\n");
return;
}
/* 分配用于存放接收数据的缓冲 */
recv_data = rt_malloc(1024);
if (recv_data == RT_NULL)
{
rt_kprintf("No memory\n");
return;
}
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
/* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
/* 创建socket失败 */
rt_kprintf("Socket error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/* 释放接收缓冲 */
rt_free(recv_data);
return;
}
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));
/* 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));
if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
{
rt_kprintf("Connect error\n");
/* 连接到服务端 */
if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
{
/* 连接失败 */
rt_kprintf("Connect error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/*释放接收缓冲 */
rt_free(recv_data);
return;
}
while(1)
{
bytes_received = recv(sock, recv_data, 1024, 0);
if (bytes_received < 0)
{
lwip_close(sock);
while(1)
{
/* 从sock连接中接收最大1024字节数据 */
bytes_received = recv(sock, recv_data, 1024, 0);
if (bytes_received < 0)
{
/* 接收失败，关闭这个连接 */
lwip_close(sock);
/* release recv buffer */
rt_free(recv_data);
break;
}
/* 释放接收缓冲 */
rt_free(recv_data);
break;
}
recv_data[bytes_received] = '\0';
/* 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)
{
lwip_close(sock);
if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)
{
/* 如果是首字母是q或Q，关闭这个连接 */
lwip_close(sock);
/* release recv buffer */
rt_free(recv_data);
break;
}
else
{
rt_kprintf("\nRecieved data = %s " , recv_data);
}
/* 释放接收缓冲 */
rt_free(recv_data);
break;
}
else
{
/* 在控制终端显示收到的数据 */
rt_kprintf("\nRecieved data = %s " , recv_data);
}
send(sock,send_data,strlen(send_data), 0);
}
/* 发送数据到sock连接 */
send(sock,send_data,strlen(send_data), 0);
}
return;
return;
}
#ifdef RT_USING_FINSH
#include <finsh.h>
/* 输出tcpclient函数到finsh shell中 */
FINSH_FUNCTION_EXPORT(tcpclient, startup tcp client);
#endif
examples/network/tcpserver.c
+95 -82
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File diff suppressed because it is too large Load Diff
examples/network/udpclient.c
+33 -25
View File
@@ -1,42 +1,50 @@
#include <rtthread.h>
#include <lwip/netdb.h>
#include <lwip/sockets.h>
#include <lwip/netdb.h> /* 为了解析主机名，需要包含netdb.h头文件 */
#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
const char send_data[] = "This is UDP Client from RT-Thread.\n";
const char send_data[] = "This is UDP Client from RT-Thread.\n"; /* 发送用到的数据 */
void udpclient(const char* url, int port, int count)
{
int sock;
struct hostent *host;
struct sockaddr_in server_addr;
int sock;
struct hostent *host;
struct sockaddr_in server_addr;
host= (struct hostent *) gethostbyname(url);
/* 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 ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
return;
}
/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
return;
}
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));
/* 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));
while (count)
{
sendto(sock, send_data, strlen(send_data), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
/* 总计发送count次数据 */
while (count)
{
/* 发送数据到服务远端 */
sendto(sock, send_data, strlen(send_data), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
rt_thread_delay(50);
/* 线程休眠一段时间 */
rt_thread_delay(50);
count --;
}
/* 计数值减一 */
count --;
}
/* close socket */
lwip_close(sock);
/* 关闭这个socket */
lwip_close(sock);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
/* 输出udpclient函数到finsh shell中 */
FINSH_FUNCTION_EXPORT(udpclient, startup udp client);
#endif
examples/network/udpserver.c
+62 -52
View File
@@ -1,74 +1,84 @@
#include <rtthread.h>
#include <lwip/sockets.h>
#include <lwip/sockets.h> /* 使用BSD socket，需要包含sockets.h头文件 */
void udpserv(void* paramemter)
{
int sock;
int bytes_read;
char *recv_data;
rt_uint32_t addr_len;
struct sockaddr_in server_addr , client_addr;
int sock;
int bytes_read;
char *recv_data;
rt_uint32_t addr_len;
struct sockaddr_in server_addr, client_addr;
recv_data = rt_malloc(1024);
if (recv_data == RT_NULL)
{
rt_kprintf("No memory\n");
return;
}
/* 分配接收用的数据缓冲 */
recv_data = rt_malloc(1024);
if (recv_data == RT_NULL)
{
/* 分配内存失败，返回 */
rt_kprintf("No memory\n");
return;
}
/* create socket */
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/* 释放接收用的数据缓冲 */
rt_free(recv_data);
return;
}
/* init server socket address */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(5000);
server_addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(server_addr.sin_zero),0, sizeof(server_addr.sin_zero));
/* 初始化服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(5000);
server_addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(server_addr.sin_zero),0, sizeof(server_addr.sin_zero));
if (bind(sock,(struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1)
{
rt_kprintf("Bind error\n");
/* 绑定socket到服务端地址 */
if (bind(sock,(struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1)
{
/* 绑定地址失败 */
rt_kprintf("Bind error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/* 释放接收用的数据缓冲 */
rt_free(recv_data);
return;
}
addr_len = sizeof(struct sockaddr);
addr_len = sizeof(struct sockaddr);
rt_kprintf("UDPServer Waiting for client on port 5000...\n");
rt_kprintf("UDPServer Waiting for client on port 5000...\n");
while (1)
{
/* 从sock中收取最大1024字节数据 */
bytes_read = recvfrom(sock, recv_data, 1024, 0,
(struct sockaddr *)&client_addr, &addr_len);
/* UDP不同于TCP，它基本不会出现收取的数据失败的情况，除非设置了超时等待 */
while (1)
{
bytes_read = recvfrom(sock, recv_data, 1024, 0,
(struct sockaddr *)&client_addr, &addr_len);
recv_data[bytes_read] = '\0';
rt_kprintf("\n(%s , %d) said : ",inet_ntoa(client_addr.sin_addr),
ntohs(client_addr.sin_port));
rt_kprintf("%s", recv_data);
recv_data[bytes_read] = '\0'; /* 把末端清零 */
if (strcmp(recv_data, "exit") == 0)
{
lwip_close(sock);
/* 输出接收的数据 */
rt_kprintf("\n(%s , %d) said : ",inet_ntoa(client_addr.sin_addr),
ntohs(client_addr.sin_port));
rt_kprintf("%s", recv_data);
/* release recv buffer */
rt_free(recv_data);
break;
}
}
/* 如果接收数据是exit，退出 */
if (strcmp(recv_data, "exit") == 0)
{
lwip_close(sock);
return;
/* 释放接收用的数据缓冲 */
rt_free(recv_data);
break;
}
}
return;
}
#ifdef RT_USING_FINSH
#include <finsh.h>
/* 输出udpserv函数到finsh shell中 */
FINSH_FUNCTION_EXPORT(udpserv, startup udp server);
#endif