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[FIX] fix InetAddress compile, and use getaddrinfo instead of gethostbyname_r #709

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[FIX] fix InetAddress compile, and use getaddrinfo instead of gethostbyname_r #709

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b763f23
[FIX] compile: forget to add stddef.h, compile error in gcc-11.4.0
Simonhancrew May 31, 2024
c6574b6
[FIX] InetAddress::resolve: we should use getaddrinfo now
Simonhancrew Jun 3, 2024
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44 changes: 23 additions & 21 deletions muduo/net/InetAddress.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,9 @@
#include <muduo/net/SocketsOps.h>

#include <netdb.h>
#include <stddef.h>
#include <netinet/in.h>
#include <sys/socket.h>

// INADDR_ANY use (type)value casting.
#pragma GCC diagnostic ignored "-Wold-style-cast"
Expand Down Expand Up @@ -113,29 +115,29 @@ uint16_t InetAddress::toPort() const
return sockets::networkToHost16(portNetEndian());
}

static __thread char t_resolveBuffer[64 * 1024];

bool InetAddress::resolve(StringArg hostname, InetAddress* out)
{
bool InetAddress::resolve(StringArg hostname, InetAddress *out) {
assert(out != NULL);
struct hostent hent;
struct hostent* he = NULL;
int herrno = 0;
memZero(&hent, sizeof(hent));

int ret = gethostbyname_r(hostname.c_str(), &hent, t_resolveBuffer, sizeof t_resolveBuffer, &he, &herrno);
if (ret == 0 && he != NULL)
{
assert(he->h_addrtype == AF_INET && he->h_length == sizeof(uint32_t));
out->addr_.sin_addr = *reinterpret_cast<struct in_addr*>(he->h_addr);
return true;
// NOTE: we only consider ipv4 addrs
struct addrinfo hints {};
struct addrinfo *res{};
struct addrinfo *p{};
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;

int ret = getaddrinfo(hostname.c_str(), nullptr, &hints, &res);
if (ret != 0) {
LOG_SYSERR << "InetAddress::resolve" << gai_strerror(ret);
return false;
}
else
{
if (ret)
{
LOG_SYSERR << "InetAddress::resolve";

for (p = res; p != nullptr; p = p->ai_next) {
if (p->ai_family == AF_INET) {
struct sockaddr_in *ipv4 = reinterpret_cast<sockaddr_in *>(p->ai_addr);
out->addr_.sin_addr = ipv4->sin_addr;
freeaddrinfo(res);
return true;
}
return false;
}
freeaddrinfo(res);
return false;
}