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[examples] code cleanup.

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This commit is contained in:
Bernard Xiong
2017-08-10 14:09:57 +08:00
parent f6b6a5cf22
commit 5f4bcfa3e1
3 changed files with 99 additions and 83 deletions
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103
examples/network/tcpsendpacket.c
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@@ -1,62 +1,67 @@
#include <rtthread.h>
#include <lwip/netdb.h> /* Ϊ<>˽<EFBFBD><CBBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>netdb.hͷ<68>ļ<EFBFBD> */
#include <lwip/netdb.h> /* Ϊ<>˽<EFBFBD><CBBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>netdb.hͷ<68>ļ<EFBFBD> */
#include <lwip/sockets.h> /* ʹ<><CAB9>BSD socket<65><74><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>sockets.hͷ<68>ļ<EFBFBD> */
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;
struct hostent *host;
int sock, err, result, timeout, index;
struct sockaddr_in server_addr;
rt_uint8_t *buffer_ptr;
/* ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>url<72><6C><EFBFBD><EFBFBD>host<73><74>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
host = gethostbyname(url);
/* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>socket<65><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SOCKET_STREAM<41><4D>TCP<43><50><EFBFBD><EFBFBD> */
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
/* <20><><EFBFBD><EFBFBD>socketʧ<74><CAA7> */
rt_kprintf("Socket error\n");
return;
}
/* ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>url<72><6C><EFBFBD><EFBFBD>host<73><74>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
host = gethostbyname(url);
/* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>socket<65><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SOCKET_STREAM<41><4D>TCP<43><50><EFBFBD><EFBFBD> */
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
/* <20><><EFBFBD><EFBFBD>socketʧ<74><CAA7> */
rt_kprintf("Socket error\n");
return;
}
/* <20><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD> */
buffer_ptr = rt_malloc(length);
/* <20><><EFBFBD>췢<EFBFBD><ECB7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
for (index = 0; index < length; index ++)
buffer_ptr[index] = index & 0xff;
/* <20><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD> */
buffer_ptr = rt_malloc(length);
/* <20><><EFBFBD>췢<EFBFBD><ECB7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
for (index = 0; index < length; index ++)
buffer_ptr[index] = index & 0xff;
timeout = 100;
/* <20><><EFBFBD>÷<EFBFBD><C3B7>ͳ<EFBFBD>ʱʱ<CAB1><CAB1>100ms */
lwip_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
/* <20><>ʼ<EFBFBD><CABC>Ԥ<EFBFBD><D4A4><EFBFBD>ӵķ<D3B5><C4B7><EFBFBD><EFBFBD>˵<EFBFBD>ַ */
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));
timeout = 100;
/* <20><><EFBFBD>÷<EFBFBD><C3B7>ͳ<EFBFBD>ʱʱ<CAB1><CAB1>100ms */
lwip_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
/* <20><>ʼ<EFBFBD><CABC>Ԥ<EFBFBD><D4A4><EFBFBD>ӵķ<D3B5><C4B7><EFBFBD><EFBFBD>˵<EFBFBD>ַ */
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));
/* <20><><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
rt_kprintf("TCP thread connect error code: %d\n", err);
/* <20><><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
err = connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
rt_kprintf("TCP thread connect error code: %d\n", err);
while(1)
{
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>sock<63><6B><EFBFBD><EFBFBD> */
result = send(sock, buffer_ptr, length, MSG_DONTWAIT);
if(result == -1) //<2F><><EFBFBD>ݷ<EFBFBD><DDB7>ʹ<EFBFBD><CDB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
rt_kprintf("TCP thread send error: %d\n", result);
lwip_close(sock); //<2F>ر<EFBFBD><D8B1><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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)
{
/* <20><>ӡsend<6E><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵΪ0<CEAA>ľ<EFBFBD><C4BE><EFBFBD><EFBFBD><EFBFBD>Ϣ */
rt_kprintf("\n Send warning,send function return 0.\r\n");
}
}
while(1)
{
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>sock<63><6B><EFBFBD><EFBFBD> */
result = send(sock, buffer_ptr, length, MSG_DONTWAIT);
if(result < 0) //<2F><><EFBFBD>ݷ<EFBFBD><DDB7>ʹ<EFBFBD><CDB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
rt_kprintf("TCP thread send error: %d\n", result);
lwip_close(sock);
/* <20>ر<EFBFBD><D8B1><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
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)
{
/* <20><>ӡsend<6E><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵΪ0<CEAA>ľ<EFBFBD><C4BE><EFBFBD><EFBFBD><EFBFBD>Ϣ */
rt_kprintf("\n Send warning,send function return 0.\r\n");
}
}
}
#ifdef RT_USING_FINSH