1、函数原型: #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> const char *gai_strerror(int errcode); 2、函数描述: getaddrinfo出错会返回的非0错误值,gai_strerror以这些值为它的唯一参数,返回一个指向对应的出错信息串的指针。 ✨3.2freeaddrinfo函数介绍 1、函数原型: #includ...
printf("inet_ntop() failed: %s ", gai_strerror(s)); continue; } printf("IP Address: %s ", ip); } } freeifaddrs(ifaddr); return 0; } Q2: 在Windows系统中,如何使用C语言获取IP地址? A2: 在Windows系统中,可以使用gethostbyname()函数来获取IP地址,这个函数需要包含winsock2.h头文件,具体实现...
= 0){ printf("getaddrinfo %s\n", gai_strerror(err)); return 1; } sock0 = socket(res->ai_family, res->ai_socktype, 0); setsockopt(sock0, SOL_SOCKET, SO_REUSEADDR, (const char*)&yes, sizeof(yes)); bind(sock0, res->ai_addr, res->ai_addrlen); listen(sock0, 5); ...
func(db *DB)Lookup(ipstring)(*LookupResult, error){vargaiError, status C.intresult := C.MMDB_lookup_string(&db.mmdb, C.CString(ip), &gaiError, &status)ifgaiError !=0{returnnil, fmt.Errorf(C.GoString(C.gai_strerror(gaiError))) }ifstatus != C.int(StatusSuccess) {returnnil, fm...
gai_strerror(n)); return -1; } ressave=res; /* Try open socket with each address getaddrinfo returned, until getting a valid listening socket. */ sockfd=-1; while (res) { sockfd = socket(res->ai_family, res->ai_socktype,
(char*)gai_strerror(errno));46printf("str_error = %s", str_error);47return0;48}49if(ailist ==NULL)50{51printf("sorry not find the IP address,please try again \n");52}53for(aip = ailist; aip != NULL; aip = aip->ai_next)//显示获取的信息54{55aip->ai_family ==AF_INET6...
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv)); return 1; } // loop through all the results and bind to the first we can for(p = servinfo; p != NULL; p = p->ai_next) { if ((sockfd = socket(p->ai_family, p->ai_socktype, ...
(structsockaddr*)&peer_addr,peer_addr_len,host,NI_MAXHOST,service,NI_MAXSERV,NI_NUMERICSERV);if(s==0){printf("receive %zd bytes: \"%s\" from %s:%s\n",num_read,buf,host,service);}else{fprintf(stderr,"getnameinfo: %s\n",gai_strerror(s));}sendto(sfd,buf,(size_t)num_read,0,(...
/home/swarming/.swarming/w/ir/x/w/goroot/src/net/cgo_unix.go:33:52: undefined: _C_gai_strerror /home/swarming/.swarming/w/ir/x/w/goroot/src/net/cgo_unix.go:33:68: undefined: _C_int ... /home/swarming/.swarming/w/ir/x/w/goroot/src/net/cgo_unix.go:345:11: undefined: _...
gai_strerror(n)); return(res); /* return pointer to first on linked list */ } /* return: -3 on timeout -2 on ICMP time exceeded in transit (caller keeps going) -1 on ICMP port unreachable (caller is done) >= return value is some other ICMP unreachable code ...