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Commit4fd6ad0

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committed
new: check for client IP address also in X-Forwarded-For header
1 parent75f1486 commit4fd6ad0

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1 file changed

+18
-7
lines changed
  • server/api-service/lowcoder-infra/src/main/java/org/lowcoder/infra/util

1 file changed

+18
-7
lines changed

‎server/api-service/lowcoder-infra/src/main/java/org/lowcoder/infra/util/NetworkUtils.java‎

Lines changed: 18 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -10,26 +10,37 @@
1010
importjava.net.InetAddress;
1111
importjava.net.InetSocketAddress;
1212
importjava.util.Optional;
13+
importjava.util.Set;
1314

1415
@Slf4j
1516
publicclassNetworkUtils {
1617

18+
privatestaticfinalString[]CLIENT_IP_HEADERS = {"X-Forwarded-For","X-Real-IP" };
1719
publicstaticStringgetRemoteIp(ServerWebExchangeserverWebExchange) {
1820
ServerHttpRequestrequest =serverWebExchange.getRequest();
1921
HttpHeadersheaders =request.getHeaders();
20-
StringxRealIp =headers.getFirst("X-Real-IP");
21-
if (StringUtils.isNotBlank(xRealIp)) {
22-
returnxRealIp;
23-
}
24-
StringremoteIp =headers.getFirst("RemoteIp");
25-
if (StringUtils.isNotBlank(remoteIp)) {
26-
returnremoteIp;
22+
23+
/** Try to find remote id in headers **/
24+
StringfoundHeader;
25+
for (Stringheader :CLIENT_IP_HEADERS) {
26+
foundHeader =getMatchingKey(header,headers.keySet());
27+
if (foundHeader !=null) {
28+
log.debug("Found client IP in header: {}",foundHeader);
29+
returnheaders.getFirst(foundHeader);
30+
}
2731
}
32+
2833
log.debug("get remote ip from remoteAddress , header {}",JsonUtils.toJson(headers));
2934
returnOptional.ofNullable(serverWebExchange.getRequest().getRemoteAddress())
3035
.map(InetSocketAddress::getAddress)
3136
.map(InetAddress::getHostAddress)
3237
.orElse("");
3338
}
3439

40+
privatestaticStringgetMatchingKey(Stringkey,Set<String>keys) {
41+
returnkeys.stream()
42+
.filter(headerKey ->StringUtils.equalsIgnoreCase(key,headerKey))
43+
.findFirst()
44+
.orElse(null);
45+
}
3546
}

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