sendto

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This issue suggests that the @SendTo annotation supports property placeholders, but I can't get it to work. Here's some simplified code snippets of what I'm trying to do (easier than trying to explain with words). I'm on spring-cloud-aws version 1.2.1. This works: @Component public class InputQueueListener { @Value("${replyQueueProperty}") private String replyQueue; @Autowired private QueueMessagingTemplate messagingTemplate; @SqsListener(value = "${inputQueueProperty}", deletionPolicy = SqsMessageDeletionPolicy.NEVER) private void

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: We are trying to apply a UDP based protocol and having some problem with sendto() function. when we try to response to the write-request with ack we get "invalid argument" from the sendto() function this is our code: int sock; // Socket sockaddr_in_t echoServAddr; // Local address sockaddr_in_t echoClntAddr; // Client address unsigned int cliAddrLen; // Length of incoming message data_packet_t echoBuffer; wrq_packet_t wrqBuffer; unsigned short echoServPort; // Server port int recvMsgSize; // Size of received message ack_packet_t Ack; struct

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I write a program using udp broadcast.Code segment as follows: struct sockaddr_in broadcast_addr; socklen_t sock_len=sizeof(broadcast_addr); bzero(&broadcast_addr,sock_len); broadcast_addr.sin_family=AF_INET; broadcast_addr.sin_port=12345; broadcast_addr.sin_addr.s_addr=inet_addr("255.255.255.255"); int fd=socket(AF_INET,SOCK_DGRAM,0); int broadcast_enable=1; setsockopt(fd,SOL_SOCKET,SO_BROADCAST,&broadcast_enable,sizeof(broadcast_enable)); uint8_t send_buf[100]; int ret=sendto(fd,send_buf,sizeof(send_buf),0, (struct sockaddr*)&broadcast

UDP doesnot sends any ack back, but will it send any response? I have set up client server UDP program. If I give client to send data to non existent server then will client receive any response? My assumption is as; Client -->Broadcast server address (ARP) Server --> Reply to client with its mac address(ARP) Client sends data to server (UDP) In any case Client will only receive ARP response. If server exists or not it will not get any UDP response? Client is using sendto function to send data. We can get error information after sendto call. So my question is how this info is available when

I am always getting no bytes sent, with an errno of 22 (EINVAL, Invalid Argument) with this code. The destination_host is set elsewhere and known to be valid, so I really don't see what is going on. MAXMSGSIZE is 1000. No errors, or warnings. I am compiling with -Wall -Werror -pedantic char *data_rec; u_int data_len; int sockfd; uint16_t *ns; struct sockaddr_in address; struct sockaddr *addr; char *ip; int i; int errno; int bytes_sent; data_len = MAXMSGSIZE; data_rec = malloc(sizeof(char)*MAXMSGSIZE); ns = malloc(MAXMSGSIZE*sizeof(uint16_t)); ip = malloc(MAXMSGSIZE*sizeof(char)); data_rec =

ping恶作剧 Mac的ping 打开terminal ping -s datasize ip 比如 ping -s 8192 192.168.1.111 向ip为192.168.1.111的ip每次发送8192字节的数据，即1MB的数据 192.168.1其实就是本地局域网 而111是本地局域网里的子ip 192.168.1是网络ip 那么192.168.1.111就是某台电脑的ip 我可怜的室友，电脑现在卡的一批，哈哈哈 Last login: Sun Aug 25 20:39:38 on ttys000 (base) localhost:~ i$ ping -s 8192 192.168.1.111 PING 192.168.1.111 (192.168.1.111): 8192 data bytes ping: sendto: Message too long ping: sendto: Message too long Request timeout for icmp_seq 0 ping: sendto: Message too long Request timeout for icmp_seq 1 ping: sendto: Message too long Request timeout for icmp_seq 2 ping: sendto: Message

本文转载自： http://blog.sina.com.cn/s/blog_640531380102wmzb.html 在我的板子上ping路由上的IP的时候可以ping通，但是ping外网的IP的时候提示“ping: sendto: Network is unreachable” 后来使用route命令看了一下 # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 rausb0 发现网关（Gateway），是空着的没有设置，于是执行一下命令设置了网关： # route add default gw 192.168.1.1 # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 rausb0 default 192.168.1.1 0.0.0.0 UG 0 0 0 rausb0 最后终于可以ping通外网了 # ping 119.75.217.56 PING 119.75.217.56 (119.75

简单实用的重写URL(URLRewriter.dll),URLrewriter.dll可以微软官方网站下载,比较旧的东西了 大概记录一下实现的方法 修改web.cofing 在<configuration>节点内加入引用程序集 < section name ="RewriterConfig" type ="URLRewriter.Config.RewriterConfigSerializerSectionHandler, URLRewriter" /> </ configSections > 重写URL < RewriterConfig > < Rules > <!-- 重写按年查询地址 --> < RewriterRule > < LookFor > ~/content_list_year,(\d{1,9}),(\d{1,9}),(\d{4})\.aspx </ LookFor > < SendTo > <![CDATA[ ~/Test.aspx?bigtypeid=$1&smalltypeid=$2&postyear=$3 ]]> </ SendTo > </ RewriterRule > <!-- 重写评论地址 --> < RewriterRule > < LookFor > ~/comment,(\d{1,9})\.aspx </ LookFor > < SendTo >