ObjXMPP  Check-in [960467b47f]

		if ((candidate = [enumerator nextObject]) != nil) {
			do {
				@try {
					[_socket
					    connectToHost: [candidate target]
						     port: [candidate port]];
					break;
				} @catch (OFAddressTranslationFailedException
				} @catch (OFResolveHostFailedException *e) {
				    *e) {
				} @catch (OFConnectionFailedException *e) {
				}
			} while ((candidate = [enumerator nextObject]) != nil);
		} else
			/* No SRV records -> fall back to A / AAAA record */
			[_socket connectToHost: _domainToASCII
					  port: _port];

#include <arpa/inet.h>
#include <netdb.h>
#include <sys/types.h>
#include <openssl/rand.h>

#import "XMPPSRVLookup.h"

#import <ObjFW/OFLocalization.h>
#import <ObjFW/OFLocale.h>

OF_ASSUME_NONNULL_BEGIN

@interface XMPPSRVLookup ()
- (void)XMPP_lookup;
- (void)XMPP_addEntry: (XMPPSRVEntry *)item;
@end

		if (dn_expand(ns_msg_base(handle), ns_msg_end(handle),
		    (uint8_t *)&rdata[3], buffer, NS_MAXDNAME) < 1)
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];

		_target = [[OFString alloc]
		    initWithCString: buffer
			   encoding: [OFLocalization encoding]];
			   encoding: [OFLocale encoding]];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

	@try {
		int answerLen, resourceRecordCount, i;
		ns_rr resourceRecord;
		ns_msg handle;

		if (res_ninit(&_resState))
			@throw [OFAddressTranslationFailedException
			    exceptionWithHost: _domain];
			@throw [OFResolveHostFailedException
			    exceptionWithHost: _domain
				  recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
				   recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
					error: OF_DNS_RESOLVER_ERROR_UNKNOWN];

		answer = [self allocMemoryWithSize: pageSize];
		answerLen = res_nsearch(&_resState, [request
		    cStringWithEncoding: [OFLocalization encoding]],
		answerLen = res_nsearch(&_resState,
		    [request cStringWithEncoding: [OFLocale encoding]],
		    ns_c_in, ns_t_srv, answer, (int)pageSize);

		if ((answerLen == -1) && ((h_errno == HOST_NOT_FOUND) ||
		    (h_errno == NO_DATA)))
			return;

		if (answerLen < 1 || answerLen > pageSize)
			@throw [OFAddressTranslationFailedException
			    exceptionWithHost: _domain];
			@throw [OFResolveHostFailedException
			    exceptionWithHost: _domain
				  recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
				   recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
					error: OF_DNS_RESOLVER_ERROR_UNKNOWN];

		if (ns_initparse(answer, answerLen, &handle))
			@throw [OFAddressTranslationFailedException
			    exceptionWithHost: _domain];
			@throw [OFResolveHostFailedException
			    exceptionWithHost: _domain
				  recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
				   recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
					error: OF_DNS_RESOLVER_ERROR_UNKNOWN];

		resourceRecordCount = ns_msg_count(handle, ns_s_an);
		for (i = 0; i < resourceRecordCount; i++) {
			if (ns_parserr(&handle, ns_s_an, i, &resourceRecord))
				continue;

			if (ns_rr_type(resourceRecord) != ns_t_srv ||