/*

 File: SOAPClient.m

 Abstract: Implementation file for a basic SOAP client.

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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 */ 

#import "SOAPClient.h"

#include <netinet/in.h>

#include <arpa/inet.h>

@implementation SOAPClient

- (id)initWithServerName:(NSString *)name {

    // Find one of the named services, then extract the port number and address.

    // We need to do this because we need to use an NSURL to make the requests.

    NSNetService *service = [[[NSNetService alloc] initWithDomain:@"local." type:@"_http._tcp." name:name] autorelease];

    if (!service) {

        [self release];

        return nil;

    }

    [service scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:@"PrivateSOAPMode"];

    [service resolveWithTimeout:8.0];

    CFAbsoluteTime deadline = CFAbsoluteTimeGetCurrent() + 8.0;

    CFTimeInterval remaining;

    while ((remaining = (deadline - CFAbsoluteTimeGetCurrent())) > 0 && [[service addresses] count] == 0) {

        CFRunLoopRunInMode((CFStringRef)@"PrivateSOAPMode", remaining, true);

    }

    [service stop];

    NSArray *addresses = [service addresses];

    if (0 == [addresses count]) {

        [self release];

        return nil;

    }

    NSData *address = [addresses objectAtIndex:0];

    struct sockaddr_in *address_sin = (struct sockaddr_in *)[address bytes];

    struct sockaddr_in6 *address_sin6 = (struct sockaddr_in6 *)[address bytes];

    const char *formatted;

    char buffer[1024];

    in_port_t port = 0;

    if (AF_INET == address_sin->sin_family) {

        formatted = inet_ntop(AF_INET, &(address_sin->sin_addr), buffer, sizeof(buffer));

        port = ntohs(address_sin->sin_port);

        url = [[NSURL alloc] initWithString:[NSString stringWithFormat:@"http://%s:%d/", formatted, port]];

    } else if (AF_INET6 == address_sin6->sin6_family) {

        formatted = inet_ntop(AF_INET6, &(address_sin6->sin6_addr), buffer, sizeof(buffer));

        port = ntohs(address_sin6->sin6_port);

        url = [[NSURL alloc] initWithString:[NSString stringWithFormat:@"http://[%s]:%d/", (0 ? formatted : "::1"), port]];

    }

    // Note that using an IPv6 address in the URL seems to not work, unless

    // the address is the trivial loopback address (that is, localhost). Even

    // using the address of the local machine seems not to work -- no data

    // will get to the server, but no exception gets raised.

    if (!url) {

        [self release];

        return nil;

    }

    return self;

}

- (void)dealloc {

    [url release];

    [super dealloc];

}

- (NSXMLDocument *)sendMessage:(NSXMLDocument *)xml waitForReply:(BOOL)b {

    NSData *data = [xml XMLData];

    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60.0] autorelease];

    [request setHTTPMethod:@"POST"];

    [request setHTTPBody:data];

    [request setValue:[NSString stringWithFormat:@"%d", [data length]] forHTTPHeaderField:@"Content-Length"];

    MyURLConnection *conn = [[[MyURLConnection alloc] initWithRequest:request delegate:self] autorelease];

    xml = nil;

    if (b) {

        while (![conn isFinished]) {

            [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];

        }

        NSError *error = nil;

        xml = [[[NSXMLDocument alloc] initWithData:[conn data] options:NSXMLNodeOptionsNone error:&error] autorelease];

    }

    return xml;

}

- (void)connection:(MyURLConnection *)urlconn didReceiveResponse:(NSURLResponse *)response {

NSLog(@"getting response");

    [urlconn setResponse:response];

}

- (void)connection:(MyURLConnection *)urlconn didReceiveData:(NSData *)data {

    [urlconn appendData:data];

}

- (void)connectionDidFinishLoading:(MyURLConnection *)urlconn {

    [urlconn setFinished:YES];

}

@end