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check ipv6 valid

This commit is contained in:
zhangxiaoyu.york 2024-09-04 19:54:15 +08:00
parent 49a31df3da
commit fa589ba60a
1 changed files with 15 additions and 3 deletions
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18
src/SyncClient.cpp
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@ -8,6 +8,7 @@
#include <netinet/in.h>
#endif
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
@ -112,10 +113,11 @@ static bool dns_resolve(std::string const& target,
}
std::string host(target.substr(0,rindex));
// check target is '[ipv6]:port'
// host format is [ipv6]
if(!ipv4 && !host.empty() && host[0] == '[' && host[host.size()-1] == ']') {
endpoints.emplace_back(target);
return true;
host = target.substr(1, rindex - 2);
ipv6_url = true;
}
target_parts.push_back(host);
@ -140,6 +142,16 @@ static bool dns_resolve(std::string const& target,
}
#endif
if (ipv6_url) {
// check valid ipv6
struct sockaddr_in6 sa6;
if (inet_pton(AF_INET6, target_parts[0].c_str(), &(sa6.sin6_addr)) == 1) {
endpoints.emplace_back(target);
return true;
}
return false;
}
struct addrinfo hints = {}, *addrs;
hints.ai_family = ipv4 ? AF_INET : AF_INET6;
hints.ai_socktype = SOCK_STREAM;