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iOS Trying to connect to my server!

0

0maN

macrumors newbie
Original poster
Oct 8, 2008
3
0
Hi guys,
I am new to Objective-C, I was wondering if you guys can give me some examples or tutorials on how to connect to server. I am traditional OO (Java, .NET) coder.
This is the way I connect to my server using Java. I am looking for something similar to this.

Code: 
HttpConnection connection = (HttpConnection) javax.microedition.io.Connector.open(serviceURL, Connector.READ_WRITE, true);
    connection.setRequestProperty("User-Agent", userAgent);
    connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    connection.setRequestProperty("Connection", "keep-alive");
    connection.setRequestMethod(HttpConnection.POST);
    DataOutputStream outputStream = connection.openDataOutputStream();
    outputStream.writeByte(requestType);
    outputStream.writeUTF(value);
    int responseCode = connection.getResponseCode();
    if (responseCode == HttpConnection.HTTP_OK || responseCode == HttpConnection.HTTP_CREATED) {
      DataInputStream iStream = connection.openDataInputStream();
      int returnCode = iStream.readByte();
    } else if (responseCode == HttpConnection.HTTP_GATEWAY_TIMEOUT) {
      throw new SessionException("Invalid session");
    } else if (responseCode == HttpConnection.HTTP_INTERNAL_ERROR) {
      throw new ApplicationException(-1, "Application error. Please contact support");
    }
    byte method = inputStream.readByte();
    String name = inputStream.readUTF();
    int count = inputStream.readInt();
    boolean status = inputStream.readBoolean();
    if (outputStream != null) {
      try {
        outputStream.close();
      } catch (IOException ioe) {}
    }

    if (inputStream != null) {
      try {
        inputStream.close();
      } catch (IOException ioe) {}
    }

    if (connection != null) {
      try {
        connection.close();
      } catch (IOException ioe) {}
    }
 
X

xnakx

macrumors newbie
Oct 5, 2008
17
0
are you trying to get a simple response from the server?
check out the NSURL Classes.
 
0

0maN

macrumors newbie
Original poster
Oct 8, 2008
3
0
xnakx said:
are you trying to get a simple response from the server?
check out the NSURL Classes.
Click to expand...

I tried NSURL Classes, but I don't know how to open DataOutputStream/DataInputStream.
 
J

jablon10

macrumors newbie
Oct 8, 2008
5
0
Los Angeles, CA
0maN said:
I tried NSURL Classes, but I don't know how to open DataOutputStream/DataInputStream.
Click to expand...

Take a look at the ImageClient sample from Apple:

http://developer.apple.com/samplecode/ImageClient/index.html

Code: 
    // Start a fresh data to hold the downloaded image
    data = CFDataCreateMutable(NULL, 0);
    
    readStream = CFReadStreamCreateForHTTPRequest(NULL, request);
    
    if (CFReadStreamOpen(readStream)) {
        BOOL done = NO;
        do {
            UInt8 buf[BUFSIZE];
            int bytesRead = CFReadStreamRead(readStream, buf, BUFSIZE);
            if (bytesRead > 0) {
                CFDataAppendBytes(data, buf, bytesRead);
            } else if (bytesRead == 0) {
                // All done
                [imageClient setImageData:(NSData *)data];
                done = YES;
            } else {
                // Error occurred
                [imageClient errorOccurredLoadingImage];
                done = YES;
            }
        } while (!done);
    } else {
        [imageClient errorOccurredLoadingImage];
    }

    // Clean up
    CFReadStreamClose(readStream);
    CFRelease(readStream);
    readStream = nil;

    CFRelease(data);
    data = NULL;
 
0

0maN

macrumors newbie
Original poster
Oct 8, 2008
3
0
jablon10 said:
Take a look at the ImageClient sample from Apple:

http://developer.apple.com/samplecode/ImageClient/index.html

Code: 
    // Start a fresh data to hold the downloaded image
    data = CFDataCreateMutable(NULL, 0);
    
    readStream = CFReadStreamCreateForHTTPRequest(NULL, request);
    
    if (CFReadStreamOpen(readStream)) {
        BOOL done = NO;
        do {
            UInt8 buf[BUFSIZE];
            int bytesRead = CFReadStreamRead(readStream, buf, BUFSIZE);
            if (bytesRead > 0) {
                CFDataAppendBytes(data, buf, bytesRead);
            } else if (bytesRead == 0) {
                // All done
                [imageClient setImageData:(NSData *)data];
                done = YES;
            } else {
                // Error occurred
                [imageClient errorOccurredLoadingImage];
                done = YES;
            }
        } while (!done);
    } else {
        [imageClient errorOccurredLoadingImage];
    }

    // Clean up
    CFReadStreamClose(readStream);
    CFRelease(readStream);
    readStream = nil;

    CFRelease(data);
    data = NULL;
Click to expand...

Thank you,
But is there any functionality for writing primitives to output stream?
 
J

jablon10

macrumors newbie
Oct 8, 2008
5
0
Los Angeles, CA
0maN said:
Thank you,
But is there any functionality for writing primitives to output stream?
Click to expand...

I'm not sure what you want to do exactly, but normally sending data to a web site is done using an HTTP post.

All-Seeing Interactive has a nice library called ASIHTTPRequest to simplify some of this stuff. Look at the source and you should find what your looking for.
 
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