Error: dereferencing pointer to incomplete type
hi ,
this is the error which i got when compiling a C pgm: con1.c:471: dereferencing pointer to incomplete type con1.c:473: dereferencing pointer to incomplete type this is the code lines which produced the error int main(int argc, char **argv) { char *dev = NULL; char errbuf[PCAP_ERRBUF_SIZE]; char *fname; int n; struct sockaddr_in serv_addr; struct hostent *server; pcap_t *handle; bpf_u_int32 mask; bpf_u_int32 net; struct pcap_pkthdr *h; const u_char *sp; struct pcap_pkthdr hdr; pcap_dumper_t *dumpfile; int num_packets = 5; front1=NULL; rear1=NULL; fname="dump"; // Establishing a connection to the server if (argc < 3) { fprintf(stderr,"usage %s hostname port\n", argv[0]); exit(0); } portno = atoi(argv[2]); sockfd = socket(AF_INET, SOCK_STREAM, 0); if (sockfd < 0) error("ERROR opening socket"); server = gethostbyname(argv[1]); if (server == NULL) { fprintf(stderr,"ERROR, no such host\n"); exit(0); } bzero((char *) &serv_addr, sizeof(serv_addr)); serv_addr.sin_family = AF_INET; // here is the error bcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length); // serv_addr.sin_port = htons(portno); if (connect(sockfd,&serv_addr,sizeof(serv_addr)) < 0) error("ERROR connecting"); ...... Any idea. thanks and regards cynthia thomas |
Quote:
The copy that you are attempting will not give you the result that you are hoping for, being a conversion from a character representation of the IP address to a numerical representation. Check out the function inet_aton() graeme. |
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