我试图在c中为DCCP协议创建套接字,它符合out错误但是当我运行程序时出现错误“sendto:Broken pipe”
我已经包含了necesseray标头定义。
#define SOCK_DCCP 6
#define IPPROTO_DCCP 33
#define SOL_DCCP 269
并且在我想要创建套接字的函数中
int dccp_sockfd,port_num,addr_len,yes = 1;
struct sockaddr_in PMU_addr,their_addr;
struct Lower_Layer_Details *temp_pmu = (struct Lower_Layer_Details *) temp;
unsigned char *dccp_BUF,*ptr,length[2];
unsigned int flen;
uint16_t cal_crc,frame_crc;
port_num = temp_pmu->port;
struct Lower_Layer_Details *t ;
if ((dccp_sockfd = socket(AF_INET, SOCK_DCCP, IPPROTO_DCCP)) == -1) {
perror("socket");
exit(1);
}
if (setsockopt(dccp_sockfd,SOL_DCCP,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
perror("setsockopt");
exit(1);
dccp_BUF = malloc(MAXBUFLEN* sizeof(unsigned char));
addr_len = sizeof(struct sockaddr);
int n,bytes_read;
unsigned char *cmdframe = malloc(19);
cmdframe[18] = '\0';
create_command_frame(1,temp_pmu->pmuid,(char *)cmdframe);
if ((n = sendto(dccp_sockfd,cmdframe, 18, 0, (struct sockaddr *)&PMU_addr,sizeof(PMU_addr)) == -1)) {
perror("sendto");
} else {
答案 0 :(得分:3)
您是否致电connect()
或bind()
和listen()
?当前的代码片段不显示那些。如果缺少这些,请尝试添加它们。为了让我们能够更好地为您提供帮助,请提出问题SSCCE。
如果您的平台是Linux,请阅读http://www.linuxfoundation.org/collaborate/workgroups/networking/dccp,尤其是“DCCP的C应用程序编程接口”部分。