Network

lwip1.4.1连接经常会断开无法连接上，可以ping通

发布于 2014-11-13 08:23:40
描述：改自realtouch的代码，用作服务器端，使用tcpip通信，上位机连接一段时间后，会自动断开，无法收发数据，上位机报错the network connection was closed by the peer，下位机报错-12或者-13，此时可以ping通。这是什么原因？
服务器端代码如下：

static void tcpserv_thread_entry(void* parameter)
{
	char *recv_data_buf,*send_data_buf; //
	rt_uint32_t sin_size;
	int sock, connected;
	struct sockaddr_in server_addr, client_addr;
	rt_uint16_t received_len,send_len;

	recv_data_buf = (char *)rt_malloc(RECV_BUF_SIZE); //
	send_data_buf = (char *)rt_malloc(SEND_BUF_SIZE);
	if (NULL == recv_data_buf || NULL == send_data_buf)
	{
		rt_kprintf("No memory
");
		goto TCP_SERVER_QUIT;
	}

	rt_memset(recv_data_buf,0x0,RECV_BUF_SIZE);
	rt_memset(send_data_buf,0x0,SEND_BUF_SIZE);

	//
	if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
	{
		//
		rt_kprintf("Socket error
");
		goto TCP_SERVER_QUIT;
	}

	//
	server_addr.sin_family = AF_INET;
	server_addr.sin_port = htons(SERVER_PORT); //
	server_addr.sin_addr.s_addr = INADDR_ANY;
	rt_memset(&(server_addr.sin_zero),8, sizeof(server_addr.sin_zero));

	//
	if (bind(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
	{
		//
		rt_kprintf("Unable to bind
");
		goto TCP_SERVER_QUIT;
	}

	//
	if (listen(sock, 5) == -1)
	{
		rt_kprintf("Listen error
");
		goto TCP_SERVER_QUIT;
	}

	rt_kprintf("TCPServer Waiting for client on port %d...
",SERVER_PORT);

	sin_size = sizeof(struct sockaddr_in);
	while(1)
	{
		//
		connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);

		//
		received_len = recv(connected,recv_data_buf, RECV_BUF_SIZE, 0);
		if (received_len > 0)
		{
			//ATE_LinkComing(ATE_LINK_ETH);
			//recv_data_buf[received_len] = '';

			TCP_data_process(recv_data_buf,received_len,send_data_buf,&send_len);
			//rt_uint16_t temp = SHORT_little_endian_TO_big_endian(send_len);
			send(connected, &send_len, sizeof(send_len), 0); //
			send(connected, send_data_buf, send_len, 0);//

			//rt_memset(send_data_buf,0x0,send_len);
		}
		/* 关闭这个connected socket */
		lwip_close(connected);
	}
TCP_SERVER_QUIT:
   rt_kprintf("error,TCP Server quit 
");
   //
   lwip_close(sock);

   //
   rt_free(recv_data_buf);
   rt_free(send_data_buf);

   RT_ASSERT(0);
   return ;
}

无法连接后，lwip的log就停住了
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=48014
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=0, netbuf=200178b0
lwip_recvfrom: buflen=8 len=2048 off=0 sock->lastoffset=0
lwip_recvfrom(1): addr=192.168.1.20 port=48014 len=8
lwip_recvfrom: deleting netbuf=200178b0
lwip_send(1, data=2000e290, size=2, flags=0x0)
lwip_send(1) err=0 written=2
lwip_send(1, data=2001197c, size=8, flags=0x0)
lwip_send(1) err=0 written=8
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=48015
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=0, netbuf=200178b0
lwip_recvfrom: buflen=8 len=2048 off=0 sock->lastoffset=0
lwip_recvfrom(1): addr=192.168.1.20 port=48015 len=8
lwip_recvfrom: deleting netbuf=200178b0
lwip_send(1, data=2000e290, size=2, flags=0x0)
lwip_send(1) err=0 written=2
lwip_send(1, data=2001197c, size=8, flags=0x0)
lwip_send(1) err=0 written=8
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=47757
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=47758
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=47759
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=48017
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=0, netbuf=200178b0
lwip_recvfrom: buflen=8 len=2048 off=0 sock->lastoffset=0
lwip_recvfrom(1): addr=192.168.1.20 port=48017 len=8
lwip_recvfrom: deleting netbuf=200178b0
lwip_send(1, data=2000e290, size=2, flags=0x0)
lwip_send(1) err=0 written=2
lwip_send(1, data=2001197c, size=8, flags=0x0)
lwip_send(1) err=0 written=8
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=47760
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000

finsh />
finsh />
finsh />
此时，ping是正常的
1.JPG

查看更多

关注者
0
被浏览
8k
关注问题 我来回答 分享 收藏 感谢 举报
8 个回答
cris8259
cris8259 2014-11-13
log2：
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43217
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=0, netbuf=200178b0
lwip_recvfrom: buflen=8 len=2048 off=0 sock->lastoffset=0
lwip_recvfrom(1): addr=192.168.1.20 port=43217 len=8
lwip_recvfrom: deleting netbuf=200178b0
lwip_send(1, data=2000e290, size=2, flags=0x0)
lwip_send(1) err=0 written=2
lwip_send(1, data=2001197c, size=8, flags=0x0)
lwip_send(1) err=0 written=8
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43120
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43121
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43122
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=-12, netbuf=00000000
lwip_recvfrom(1): buf == NULL, error is "Connection closed."!
lwip_close(1)
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43219
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000
lwip_recvfrom: netconn_recv err=0, netbuf=200178b0
lwip_recvfrom: buflen=8 len=2048 off=0 sock->lastoffset=0
lwip_recvfrom(1): addr=192.168.1.20 port=43219 len=8
lwip_recvfrom: deleting netbuf=200178b0
lwip_send(1, data=2000e290, size=2, flags=0x0)
lwip_send(1) err=0 written=2
lwip_send(1, data=2001197c, size=8, flags=0x0)
lwip_send(1) err=0 written=8
lwip_close(1)
lwip_accept(0)...
lwip_accept(0): netconn_peer failed, err=-13
lwip_recvfrom(-1, 20011170, 2048, 0x0, ..)
get_socket(-1): invalid
lwip_send(-1, data=2000e290, size=2, flags=0x0)
get_socket(-1): invalid
lwip_send(-1, data=2001197c, size=8, flags=0x0)
get_socket(-1): invalid
lwip_close(-1)
get_socket(-1): invalid
lwip_accept(0)...
lwip_accept(0) returning new sock=1 addr=192.168.1.20 port=43124
lwip_recvfrom(1, 20011170, 2048, 0x0, ..)
lwip_recvfrom: top while sock->lastdata=00000000

finsh />
finsh />
赞同 0 添加回复 收藏 感谢 举报
pangwei
pangwei 2014-11-14
received_len =0后会怎么样，分析下程序逻辑。
赞同 0 添加回复 收藏 感谢 举报
cris8259
cris8259 2014-11-14
如果把下位机lwip的log打开，更容易出现这个现象，像是下位机反应比较慢，上位机连接频繁的时候，更容易出现。不知道下位机发送的过程中，上位机断掉连接会怎么样？好像是上位机提前断掉连接造成的
赞同 0 添加回复 收藏 感谢 举报
cris8259
cris8259 2014-11-14 
finsh />list_tcps()
Active PCB states:
#0 192.168.1.30:8259 <==> 192.168.1.20:9478 snd_nxt 0x00001996 rcv_nxt 0x91CF872A state: ESTABLISHED
#1 192.168.1.30:8259 <==> 192.168.1.20:9425 snd_nxt 0x00001991 rcv_nxt 0xD4BF749B state: ESTABLISHED
#2 192.168.1.30:8259 <==> 192.168.1.20:9424 snd_nxt 0x00001990 rcv_nxt 0x18D0CA05 state: ESTABLISHED
Listen PCB states:
#0 local port 8259 state: LISTEN
#1 local port 8258 state: LISTEN
TIME-WAIT PCB states:
#0 192.168.1.30:8259 <==> 192.168.1.20:9476 snd_nxt 0x00001ACE rcv_nxt 0x587BF184 state: TIME_WAIT
#1 192.168.1.30:8259 <==> 192.168.1.20:9474 snd_nxt 0x00001AC9 rcv_nxt 0xF8DA7249 state: TIME_WAIT
#2 192.168.1.30:8259 <==> 192.168.1.20:9472 snd_nxt 0x00001AC4 rcv_nxt 0xE6C2E03B state: TIME_WAIT
#3 192.168.1.30:8259 <==> 192.168.1.20:9470 snd_nxt 0x00001ABF rcv_nxt 0xA72865F4 state: TIME_WAIT
#4 192.168.1.30:8259 <==> 192.168.1.20:9469 snd_nxt 0x00001ABD rcv_nxt 0x77A2AC4B state: TIME_WAIT
#5 192.168.1.30:8259 <==> 192.168.1.20:9468 snd_nxt 0x00001ABC rcv_nxt 0x725C3CE9 state: TIME_WAIT
#6 192.168.1.30:8259 <==> 192.168.1.20:9467 snd_nxt 0x00001ABB rcv_nxt 0x336F4EE0 state: TIME_WAIT
#7 192.168.1.30:8259 <==> 192.168.1.20:9466 snd_nxt 0x00001ABA rcv_nxt 0xB844F9AA state: TIME_WAIT
#8 192.168.1.30:8259 <==> 192.168.1.20:9465 snd_nxt 0x00001AB9 rcv_nxt 0x22C1365B state: TIME_WAIT
#9 192.168.1.30:8259 <==> 192.168.1.20:9464 snd_nxt 0x00001AB8 rcv_nxt 0x4FD807FD state: TIME_WAIT
#10 192.168.1.30:8259 <==> 192.168.1.20:9463 snd_nxt 0x00001AB7 rcv_nxt 0xF7C5DC7E state: TIME_WAIT
#11 192.168.1.30:8259 <==> 192.168.1.20:9462 snd_nxt 0x00001AB6 rcv_nxt 0x967F9497 state: TIME_WAIT
#12 192.168.1.30:8259 <==> 192.168.1.20:9461 snd_nxt 0x00001AB5 rcv_nxt 0xFB08EDBB state: TIME_WAIT
#13 192.168.1.30:8259 <==> 192.168.1.20:9460 snd_nxt 0x00001AB4 rcv_nxt 0x7BAE068E state: TIME_WAIT
#14 192.168.1.30:8259 <==> 192.168.1.20:9459 snd_nxt 0x00001AB3 rcv_nxt 0xF957ACD1 state: TIME_WAIT
#15 192.168.1.30:8259 <==> 192.168.1.20:9458 snd_nxt 0x00001AB2 rcv_nxt 0x6F136874 state: TIME_WAIT
#16 192.168.1.30:8259 <==> 192.168.1.20:9457 snd_nxt 0x00001AB1 rcv_nxt 0x801398C5 state: TIME_WAIT
#17 192.168.1.30:8259 <==> 192.168.1.20:9456 snd_nxt 0x00001AB0 rcv_nxt 0xE35FF6AD state: TIME_WAIT
#18 192.168.1.30:8259 <==> 192.168.1.20:9455 snd_nxt 0x00001AAF rcv_nxt 0x353D635B state: TIME_WAIT
#19 192.168.1.30:8259 <==> 192.168.1.20:9454 snd_nxt 0x00001AAE rcv_nxt 0x8EA1F9D4 state: TIME_WAIT
#20 192.168.1.30:8259 <==> 192.168.1.20:9453 snd_nxt 0x00001AAE rcv_nxt 0x3C005A71 state: TIME_WAIT
#21 192.168.1.30:8259 <==> 192.168.1.20:9452 snd_nxt 0x00001AAE rcv_nxt 0xFBC2A967 state: TIME_WAIT
#22 192.168.1.30:8259 <==> 192.168.1.20:9451 snd_nxt 0x00001AAE rcv_nxt 0xEC83FD22 state: TIME_WAIT
#23 192.168.1.30:8259 <==> 192.168.1.20:9449 snd_nxt 0x00001AAE rcv_nxt 0xDE5D53D8 state: TIME_WAIT
#24 192.168.1.30:8259 <==> 192.168.1.20:9448 snd_nxt 0x00001AAE rcv_nxt 0xCD98303F state: TIME_WAIT
#25 192.168.1.30:8259 <==> 192.168.1.20:9447 snd_nxt 0x00001AAE rcv_nxt 0x8E43C3DD state: TIME_WAIT
#26 192.168.1.30:8259 <==> 192.168.1.20:9446 snd_nxt 0x00001AAE rcv_nxt 0xBBCF57CC state: TIME_WAIT
#27 192.168.1.30:8259 <==> 192.168.1.20:9445 snd_nxt 0x00001AAE rcv_nxt 0x8E183D2C state: TIME_WAIT
#28 192.168.1.30:8259 <==> 192.168.1.20:9444 snd_nxt 0x00001AAE rcv_nxt 0x7DFAD1DD state: TIME_WAIT
#29 192.168.1.30:8259 <==> 192.168.1.20:9443 snd_nxt 0x00001AAE rcv_nxt 0xA7089B8F state: TIME_WAIT
#30 192.168.1.30:8259 <==> 192.168.1.20:9442 snd_nxt 0x00001AAE rcv_nxt 0x441EC083 state: TIME_WAIT
#31 192.168.1.30:8259 <==> 192.168.1.20:9441 snd_nxt 0x00001AAE rcv_nxt 0x51ACFC8F state: TIME_WAIT
#32 192.168.1.30:8259 <==> 192.168.1.20:9440 snd_nxt 0x00001AAE rcv_nxt 0x590B31E9 state: TIME_WAIT
#33 192.168.1.30:8259 <==> 192.168.1.20:9439 snd_nxt 0x00001AAE rcv_nxt 0xE475F1D2 state: TIME_WAIT
#34 192.168.1.30:8259 <==> 192.168.1.20:9438 snd_nxt 0x00001AAE rcv_nxt 0x3C4A763E state: TIME_WAIT
#35 192.168.1.30:8259 <==> 192.168.1.20:9437 snd_nxt 0x00001AAE rcv_nxt 0x294EAAA5 state: TIME_WAIT
        0, 0x00000000
赞同 0 添加回复 收藏 感谢 举报
cris8259
cris8259 2014-11-14
无法连接时出现多个time_wait
赞同 0 添加回复 收藏 感谢 举报
bernard
bernard 2014-11-14
lwIP这边不要使用RT的内存管理，不打补丁会造成多个TIME_WAIT状态的TCP连接。
赞同 0 添加回复 收藏 感谢 举报
cris8259
cris8259 2014-11-14
没有打开宏RT_LWIP_USING_RT_MEM。不打补丁是什么意思？问题大概出在哪里？之前没出现过？
赞同 0 添加回复 收藏 感谢 举报

撰写答案

请登录后再发布答案，点击登录
登录 注册新账号

相关问题

1
LPC1768:RTT+LWIP+webserver用IE刷网页出现硬件中断错误（已经解决）
2
求一些LWIP开发的经验，目前ping一直不稳定。
3
stm32f207+dp83848无法ping通
4
RTT下的LWIP传递机制
5
rtt内lwip的socket是否是线程安全？
6
Lwip+enc28j60无法ping通
7
坑爹的rtconfig.h lwip关掉了checksum
8
花了一个晚上，把RT2.0的LWIP、网卡驱动、文件系统整合起来了，发现一点小问题
9
lwip例程中udp发送时如何指定源端口发送到指定目的地端口
10
【已解决】CME-M7芯片RTT+LWIP求助[遗留一个8小时固定死机问题]

热门文章

1
RT-Thread交流社区中发贴的Markdown语法介绍
2
转载 - 基于 RT-Thread 实现 USB 虚拟串口
3
五分钟玩转RT-Thread新社区
4
RT-Thread操作系统μC/OS-III兼容层 发布啦
5
RT-Thread Studio V1.1.2 Release Note
6
向大家推荐一个快捷易用的led驱动包
7
熊谱翔：变化的RT-Thread 不变的初心
8
Linus Torvalds：我们都老了，但Linux维护后继无人
9
[编译链接]单片机分散加载机制、地址无关编译的分析（一）
10
手把手教你用STM32发送带附件的邮件 （一）

热门问题

1
面向 RTOS 初学者的例程和文档汇总
2
菜鸟也想出把力 RT-Thread + STM32 + CanOpen(开源的CanFestival)
3
【网络编程学习】+Mculover666+qemu和网络编程
4
这里是BUG回报板块!
5
RT-Thread 1.1.0 正式版本发布
6
RealTouch预定贴--报名截止--已开始现货销售
7
论坛功能公告
8
开源实时操作系统RT-Thread 0.3.0正式版发布
9
RT-Thread精华索引
10
ART_work 0094版本发布

热门标签

RT-Thread Studio USB SPI 串口 Nano AT Bootloader CAN FinSH DMA stm32 RT-Thread一般讨论 BSP flash 移植 SD UART usb转串口 文件系统 RT-Thread LWIP W5500 at_device SDIO Env ESP8266 freemodbus C++ 线程 shell memheap 代码逻辑结构 SCons ADC PM MDK PWM 虚拟u盘 FAL 外部flash timer 读写 ota RT-Studio BC26 软件包 Jlink Fat nfs STM32H743

等待解答

问
格式化usb虚拟u盘（slave）失败，无法使用
问
使用CmBacktrace定位错误异常，请教分析原因
问
关于tftp64的传输路径问题
问
rt-thread studio关于项目空间，不能通过图标直接打开
问
文件系统挂载断言机制，只能在 系统APP里初始化并要延时500ms才能挂载系统
问
aarch64有计划支持SMP吗
问
关于.init段和.fini段
问
`scons --dist` 之后,缺少.s文件
问
点更新软件包后， 软件包并没有被下载
问
更新软件包 没有自动下载软件包

推荐专家

清晨的光明
清晨的光明
0个答案 0次被采纳
sgf201
sgf201
7个答案 0次被采纳
答案在风中飘
答案在风中飘
2个答案 1次被采纳
lt6210925
lt6210925
2个答案 0次被采纳
Aladdin-Wang
Aladdin-Wang
5个答案 1次被采纳

发布
问题

分享
好友