56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h> // gettimeofday
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#include <sys/stat.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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extern void rec_off(void);
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int init_tx_port(int port, struct sockaddr_in *paddr)
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{
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int socket_descriptor;
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bzero(paddr,sizeof(struct sockaddr_in));
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paddr->sin_family=AF_INET;
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paddr->sin_addr.s_addr=inet_addr("127.0.0.1");
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paddr->sin_port=htons(port);
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socket_descriptor=socket(AF_INET,SOCK_DGRAM,0);//IPV4
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return socket_descriptor;
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}
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int init_rx_port(int port, struct sockaddr_in *paddr)
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{
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int socket_descriptor;
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int ret;
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bzero(paddr,sizeof(struct sockaddr_in));
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paddr->sin_family=AF_INET;
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paddr->sin_addr.s_addr=htonl(INADDR_ANY);
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paddr->sin_port=htons(port);
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do {
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socket_descriptor=socket(AF_INET,SOCK_DGRAM,0);//IPV4
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if(socket_descriptor <=0)
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printf("open rx port failed!\n");
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} while( socket_descriptor <= 0);
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do {
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ret = bind(socket_descriptor, (struct sockaddr *)paddr, sizeof(struct sockaddr));
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if(ret < 0) {
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perror("bind failed...\r\n");
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socket_descriptor=socket(AF_INET,SOCK_DGRAM,0);
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rec_off();
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}
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//exit(1);
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} while(ret < 0);
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return socket_descriptor;
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}
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