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  • Array.Copy: strange exception while concatenating two byte arrays

    - by robob
    In a application of mine that is developed in C# I have the following code: byte[] resb = new byte[Buffer.ByteLength(blockAr) + Buffer.ByteLength(previous)]; Array.Copy(blockAr, 0, resb,0, blockAr.Length); Array.Copy(previous, 0, resb, blockAr.Length, previous.Length); It's a very simple code to concatenate two byte arrays. The problem is that in some particular situation that I don't know I have that exception: ArgumentOutOfRangeException: sourceIndex is less than the lower bound of the first dimension of sourceArray. I cannot see any of strange in my code and I am not able to reproduce the exception. Could anyone help me to identify the problem? thanks

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  • Feedback on Optimizing C# NET Code Block

    - by Brett Powell
    I just spent quite a few hours reading up on TCP servers and my desired protocol I was trying to implement, and finally got everything working great. I noticed the code looks like absolute bollocks (is the the correct usage? Im not a brit) and would like some feedback on optimizing it, mostly for reuse and readability. The packet formats are always int, int, int, string, string. try { BinaryReader reader = new BinaryReader(clientStream); int packetsize = reader.ReadInt32(); int requestid = reader.ReadInt32(); int serverdata = reader.ReadInt32(); Console.WriteLine("Packet Size: {0} RequestID: {1} ServerData: {2}", packetsize, requestid, serverdata); List<byte> str = new List<byte>(); byte nextByte = reader.ReadByte(); while (nextByte != 0) { str.Add(nextByte); nextByte = reader.ReadByte(); } // Password Sent to be Authenticated string string1 = Encoding.UTF8.GetString(str.ToArray()); str.Clear(); nextByte = reader.ReadByte(); while (nextByte != 0) { str.Add(nextByte); nextByte = reader.ReadByte(); } // NULL string string string2 = Encoding.UTF8.GetString(str.ToArray()); Console.WriteLine("String1: {0} String2: {1}", string1, string2); // Reply to Authentication Request MemoryStream stream = new MemoryStream(); BinaryWriter writer = new BinaryWriter(stream); writer.Write((int)(1)); // Packet Size writer.Write((int)(requestid)); // Mirror RequestID if Authenticated, -1 if Failed byte[] buffer = stream.ToArray(); clientStream.Write(buffer, 0, buffer.Length); clientStream.Flush(); } I am going to be dealing with other packet types as well that are formatted the same (int/int/int/str/str), but different values. I could probably create a packet class, but this is a bit outside my scope of knowledge for how to apply it to this scenario. If it makes any difference, this is the Protocol I am implementing. http://developer.valvesoftware.com/wiki/Source_RCON_Protocol

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  • How to use CLEAR USB WiMax in Ubuntu (host) and Windows XP (guest) using VirtualBox

    - by bithacker
    I'm trying to use CLEAR Motorola WiMax USB in Ubuntu as there is no support for Linux as yet. I've installed Windows XP as guest in Ubuntu and the version I'm using is 3.2.2. USB is connecting fine in Windows XP but I can't use internet in Ubuntu. Can you please tell me how to do it. Here is the configuration that could help you guys. Thanks in advance. I'm using Two Network Adapters. Network Adapter 1: PCnet-FAST III (NAT) Adapter 2: PCnet-FAST III (Host-only adapter, 'vboxnet0') ipconfig [on Guest windowsXP] Windows IP Configuration Ethernet adapter Local Area Connection: PCnet-FAST III (NAT) Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 10.0.2.15 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.0.2.2 Ethernet adapter Local Area Connection 3: PCnet-FAST III (Host-only adapter, 'vboxnet0') Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 192.168.56.101 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : Ethernet adapter Local Area Connection 2: Connection-specific DNS Suffix . : CLEAR Motorola USB IP Address. . . . . . . . . . . . : 10.168.242.33 Subnet Mask . . . . . . . . . . . : 255.255.192.0 Default Gateway . . . . . . . . . : 10.168.192.2 IFCONFIG [on Host Ubuntu] (Ethernet) eth0 Link encap:Ethernet HWaddr 00:14:22:b9:9d:76 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:16 eth1 (Wireless) Link encap:Ethernet HWaddr 00:13:ce:f0:9b:0d inet6 addr: fe80::213:ceff:fef0:9b0d/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:1 errors:0 dropped:5 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:84 (84.0 B) Interrupt:17 Base address:0xe000 Memory:dfcff000-dfcfffff lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2292 errors:0 dropped:0 overruns:0 frame:0 TX packets:2292 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:171952 (171.9 KB) TX bytes:171952 (171.9 KB) vboxnet0 Link encap:Ethernet HWaddr 0a:00:27:00:00:00 inet addr:192.168.56.1 Bcast:192.168.56.255 Mask:255.255.255.0 inet6 addr: fe80::800:27ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:137 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:21174 (21.1 KB)

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  • vmware player - ubuntu can resolve hostname but ping fails

    - by recursive_acronym
    Using VMware players on Windows 7 with a Ubuntu 10.04 guest. When I ping it resolves the ip address but the ping fails. Hopefully this is a local issue as I don't have access to any of the network equipment (routers, etc). vmware tools is installed. Is there any other information I can provide to help resolve this? eth0 Link encap:Ethernet HWaddr 00:0c:29:83:4f:c0 inet addr:192.168.163.129 Bcast:192.168.163.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe83:4fc0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:475 errors:0 dropped:0 overruns:0 frame:0 TX packets:179 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:50006 (50.0 KB) TX bytes:16701 (16.7 KB) Interrupt:19 Base address:0x2024 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480 (480.0 B) TX bytes:480 (480.0 B)

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  • Reading file data during form's clean method

    - by Dominic Rodger
    So, I'm working on implementing the answer to my previous question. Here's my model: class Talk(models.Model): title = models.CharField(max_length=200) mp3 = models.FileField(upload_to = u'talks/', max_length=200) Here's my form: class TalkForm(forms.ModelForm): def clean(self): super(TalkForm, self).clean() cleaned_data = self.cleaned_data if u'mp3' in self.files: from mutagen.mp3 import MP3 if hasattr(self.files['mp3'], 'temporary_file_path'): audio = MP3(self.files['mp3'].temporary_file_path()) else: # What goes here? audio = None # setting to None for now ... return cleaned_data class Meta: model = Talk Mutagen needs file-like objects - the first case (where the uploaded file is larger than the size of file handled in memory) works fine, but I don't know how to handle InMemoryUploadedFile that I get otherwise. I've tried: # TypeError (coercing to Unicode: need string or buffer, InMemoryUploadedFile found) audio = MP3(self.files['mp3']) # TypeError (coercing to Unicode: need string or buffer, cStringIO.StringO found) audio = MP3(self.files['mp3'].file) # Hangs seemingly indefinitely audio = MP3(self.files['mp3'].file.read()) Is there something wrong with mutagen, or am I doing it wrong?

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  • How to know if it's phishing or not in android apps?

    - by Zakaria Dza
    In IM apps (not only), there is a browser frame that appears and prompts for example to connect to facebook account, ebuddy for example (can't post pictures :( ) http://nsa34.casimages.com/img/2013/06/26//130626121230193046.jpg My question is: how can I know if this frame is from facebook.com and not a phishing website. I know that the apps in the play store are legit (mostly at least), but how can we trust apps that we install from outside the store? Or is there any way to check the credentials form action? Thanks for your answers and sorry for my bad english. (And sorry for the picture, couldn't make a screenshot ;-) )

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  • Bsplayer - load audio tracks from external files

    - by torran
    I have a movie file: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : Yes Format settings, ReFrames : 5 frames Muxing mode : Container [email protected] Codec ID : V_MPEG4/ISO/AVC Duration : 54mn 13s Bit rate : 3 380 Kbps Nominal bit rate : 3 459 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate : 23.976 fps Resolution : 8 bits Colorimetry : 4:2:0 Scan type : Progressive Bits/(Pixel*Frame) : 0.153 Stream size : 1.28 GiB (88%) Writing library : x264 core 88 r1471 1144615 Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Codec ID : A_AC3 Duration : 54mn 16s Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Stream size : 149 MiB (10%) and additional audio files in same folder: .mp3 and .ac3. How can I load them with bsplayer? Right click-audio-audio streams is empty. If i open the movie with media players classic I can switch audio files.

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  • Can draw on only half of UIView

    - by ydlee777
    Hello. I am trying to draw grid on a UIView on a UIScrollView. The width of UIView is about 1000 pixels. However, I can draw lines only about first 340 pixels of the UIView. Can anyone help me on this? The drawGrid function is - (void)drawRect:(CGRect)rect { NSInteger width = 25 * 5 * 10; NSInteger height = (10 * 2 + 10) * 12; NSInteger i; //Get the CGContext from this view CGContextRef context = UIGraphicsGetCurrentContext(); // Draw rectangle with a blue stroke color and white fill color CGContextSetRGBStrokeColor(context, 0.0, 0.0, 1.0, 1.0); CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0); CGContextSetLineWidth(context, 2.0); CGContextAddRect(context, CGRectMake(0.0, 0.0, width, height)); CGContextFillPath(context); // Draw grid with red color CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor); // Set the width of the pen mark CGContextSetLineWidth(context, 0.2); for (i = 0; i < height; i += 5) { if (i % 25 == 0) { CGContextSetLineWidth(context, 0.4); // Draw a line CGContextMoveToPoint(context, i, 0.0); CGContextAddLineToPoint(context, i, width); CGContextStrokePath(context); CGContextSetLineWidth(context, 0.2); } else { // Draw a line CGContextMoveToPoint(context, i, 0.0); CGContextAddLineToPoint(context, i, width); CGContextStrokePath(context); } } for (i = 0; i < width; i += 5) { if (i % 25 == 0) { CGContextSetLineWidth(context, 0.4); // Draw a line CGContextMoveToPoint(context, 0.0, i); CGContextAddLineToPoint(context, height, i); CGContextStrokePath(context); CGContextSetLineWidth(context, 0.2); } else { // Draw a line CGContextMoveToPoint(context, 0.0, i); CGContextAddLineToPoint(context, height, i); CGContextStrokePath(context); } } } I am also setting up the UIScrollView and UIView as follows: - (void)viewDidLoad { [super viewDidLoad]; CGRect frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); waveScrollView = [[WaveScrollView alloc] initWithFrame:frame]; CGRect waveframe = CGRectMake(0, 0, 25 * 5 * 10, (10 * 2 + 10) * 12); EKGWaveView *ekgWaveView = [[EKGWaveView alloc] initWithFrame:waveframe]; waveScrollView.contentSize = CGSizeMake(waveframe.size.width, waveframe.size.height); waveScrollView.maximumZoomScale = 4.0; waveScrollView.minimumZoomScale = 0.75; waveScrollView.clipsToBounds = YES; waveScrollView.aView = ekgWaveView; [waveScrollView addSubview:ekgWaveView]; waveScrollView.delegate = self; [self.view addSubview:waveScrollView]; } I appreciate any help. Thanks.

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  • Vlan Tagging at Access Port in Switch

    - by singh
    I'm Confused from the fact that Vlan tagging is done at access port and trunk port always gets tagged packets (until its case of native vlan).But I still believe in other fact which says tagging happen only when a frame hit the trunk port which means trunk port gets untagged frame and tagging is not possible at access port. Would like to know where actually this tagging happens ? and also which command we can use to encapsulate 802.1q protocol to access port ? The way we do at trunk port is switchport trunk encapsulation dot1q Is the above command applicable for access mode also?

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  • What's causing "Unable to retrieve native address from ByteBuffer object"?

    - by r0u1i
    As a very novice Java programmer, I probably should not mess with that kind of things. Unfortunately, I'm using a library which have a method that accepts a ByteBuffer object and throws when I try to use it: Exception in thread "main" java.lang.NullPointerException: Unable to retrieve native address from ByteBuffer object Is it because I'm not using a non-direct buffer? edit: There's not a lot of my code there. The library I'm using is jNetPcap, and I'm trying to dump a packet to file. My code takes an existing packet, and extract a ByteBuffer out of it: byte[] bytes = m_packet.getByteArray(0, m_packet.size()); ByteBuffer buffer = ByteBuffer.wrap(bytes); Then it calls on of the dump methods of jNetPcap that takes a ByteBuffer.

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  • Getting normal information from OpenGL render output

    - by okamiueru
    I'll try to keep this simple. I want a way to access the normal information of the scene, from the Frame Buffer output (or similar). The same way one is able to access the Depth Buffer using glGetTexImage and GL_DEPTH_COMPONENT. I know I could set up a fragment shader which outputs the normal information in RGB color space, which could in turn be read from the rendered image. I'm wondering however if there is a way to do this within the openGL API. I'll clarify anything upon request as best as I can, Thank you

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  • Can one class generate a signal and handled by another class?

    - by rashid
    Hello, I have a buffer in class 'bufferClass' that will generate a signal to tell 'fileClass' that buffer is full and now write data to file? And when 'fileClass' is done writing to file, it will generate a signal to tell 'guiClass' that data can be read from file. Is this possible? I have been reading http://www.gnu.org/s/libc/manual/html_node/Signal-Handling.html but not too sure how to generate such a signal? I don't need the exact code, just an idea. Much appreciated. i am using mac os X, x-code.

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  • How to get proper alignment when printing to file

    - by user1067334
    I have this Structure the elements of which that I need to write in a text file struct Stage3ADisplay { int nSlot; char *Item; char *Type; int nIndex; unsigned char attributesMD[17]; //the last character is \0 unsigned char contentsMD[17]; //only for regular files - //the last character is \0 }; buffer = malloc(sizeof(Stage3ADisplayVar[nIterator]->nSlot) + sizeof(Stage3ADisplayVar[nIterator]->Item) + sizeof(Stage3ADisplayVar[nIterator]->Type) + sizeof(Stage3ADisplayVar[nIterator]->nIndex) + sizeof(Stage3ADisplayVar[nIterator]->attributesMD) + sizeof(Stage3ADisplayVar[nIterator]->contentsMD) + 1); sprintf (buffer,"%d %s %s %d %x %x",Stage3ADisplayVar[nIterator]->nSlot, Stage3ADisplayVar[nIterator]->Item,Stage3ADisplayVar[nIterator]->Type,Stage3ADisplayVar[nIterator]->nIndex,Stage3ADisplayVar[nIterator]->attributesMD,Stage3ADisplayVar[nIterator]->contentsMD); How do I make sure the rows in the file are properly aligned. Thank you.

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  • Access violation writing location, in my loop

    - by numerical25
    The exact error I am getting is First-chance exception at 0x0096234a in chp2.exe: 0xC0000005: Access violation writing location 0x002b0000. Windows has triggered a breakpoint in chp2.exe. And the breakpoint stops here for(DWORD i = 0; i < m; ++i) { //we are start at the top of z float z = halfDepth - i*dx; for(DWORD j = 0; j < n; ++j) { //to the left of us float x = -halfWidth + j*dx; float y = 0.0f; vertices[i*n+j].pos = D3DXVECTOR3(x, y, z); //<----- Right here vertices[i*n+j].color = D3DXVECTOR4(1.0f, 0.0f, 0.0f, 0.0f); } } I am not sure what I am doing wrong. below is the code in its entirety #include "MyGame.h" //#include "CubeVector.h" /* This code sets a projection and shows a turning cube. What has been added is the project, rotation and a rasterizer to change the rasterization of the cube. The issue that was going on was something with the effect file which was causing the vertices not to be rendered correctly.*/ typedef struct { ID3D10Effect* pEffect; ID3D10EffectTechnique* pTechnique; //vertex information ID3D10Buffer* pVertexBuffer; ID3D10Buffer* pIndicesBuffer; ID3D10InputLayout* pVertexLayout; UINT numVertices; UINT numIndices; }ModelObject; ModelObject modelObject; // World Matrix D3DXMATRIX WorldMatrix; // View Matrix D3DXMATRIX ViewMatrix; // Projection Matrix D3DXMATRIX ProjectionMatrix; ID3D10EffectMatrixVariable* pProjectionMatrixVariable = NULL; //grid information #define NUM_COLS 16 #define NUM_ROWS 16 #define CELL_WIDTH 32 #define CELL_HEIGHT 32 #define NUM_VERTSX (NUM_COLS + 1) #define NUM_VERTSY (NUM_ROWS + 1) bool MyGame::InitDirect3D() { if(!DX3dApp::InitDirect3D()) { return false; } D3D10_RASTERIZER_DESC rastDesc; rastDesc.FillMode = D3D10_FILL_WIREFRAME; rastDesc.CullMode = D3D10_CULL_FRONT; rastDesc.FrontCounterClockwise = true; rastDesc.DepthBias = false; rastDesc.DepthBiasClamp = 0; rastDesc.SlopeScaledDepthBias = 0; rastDesc.DepthClipEnable = false; rastDesc.ScissorEnable = false; rastDesc.MultisampleEnable = false; rastDesc.AntialiasedLineEnable = false; ID3D10RasterizerState *g_pRasterizerState; mpD3DDevice->CreateRasterizerState(&rastDesc, &g_pRasterizerState); mpD3DDevice->RSSetState(g_pRasterizerState); // Set up the World Matrix //The first line of code creates your identity matrix. Second line of code //second combines your camera position, target location, and which way is up respectively D3DXMatrixIdentity(&WorldMatrix); D3DXMatrixLookAtLH(&ViewMatrix, new D3DXVECTOR3(200.0f, 60.0f, -20.0f), new D3DXVECTOR3(200.0f, 50.0f, 0.0f), new D3DXVECTOR3(0.0f, 1.0f, 0.0f)); // Set up the projection matrix D3DXMatrixPerspectiveFovLH(&ProjectionMatrix, (float)D3DX_PI * 0.5f, (float)mWidth/(float)mHeight, 0.1f, 100.0f); if(!CreateObject()) { return false; } return true; } //These are actions that take place after the clearing of the buffer and before the present void MyGame::GameDraw() { static float rotationAngle = 0.0f; // create the rotation matrix using the rotation angle D3DXMatrixRotationY(&WorldMatrix, rotationAngle); rotationAngle += (float)D3DX_PI * 0.0f; // Set the input layout mpD3DDevice->IASetInputLayout(modelObject.pVertexLayout); // Set vertex buffer UINT stride = sizeof(VertexPos); UINT offset = 0; mpD3DDevice->IASetVertexBuffers(0, 1, &modelObject.pVertexBuffer, &stride, &offset); mpD3DDevice->IASetIndexBuffer(modelObject.pIndicesBuffer, DXGI_FORMAT_R32_UINT, 0); // Set primitive topology mpD3DDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST); // Combine and send the final matrix to the shader D3DXMATRIX finalMatrix = (WorldMatrix * ViewMatrix * ProjectionMatrix); pProjectionMatrixVariable->SetMatrix((float*)&finalMatrix); // make sure modelObject is valid // Render a model object D3D10_TECHNIQUE_DESC techniqueDescription; modelObject.pTechnique->GetDesc(&techniqueDescription); // Loop through the technique passes for(UINT p=0; p < techniqueDescription.Passes; ++p) { modelObject.pTechnique->GetPassByIndex(p)->Apply(0); // draw the cube using all 36 vertices and 12 triangles mpD3DDevice->DrawIndexed(modelObject.numIndices,0,0); } } //Render actually incapsulates Gamedraw, so you can call data before you actually clear the buffer or after you //present data void MyGame::Render() { DX3dApp::Render(); } bool MyGame::CreateObject() { //dx will represent the width and the height of the spacing of each vector float dx = 1; //Below are the number of vertices //m is the vertices of each row. n is the columns DWORD m = 30; DWORD n = 30; //This get the width of the entire land //30 - 1 = 29 rows * 1 = 29 * 0.5 = 14.5 float halfWidth = (n-1)*dx*0.5f; float halfDepth = (m-1)*dx*0.5f; float vertexsize = m * n; VertexPos vertices[80]; for(DWORD i = 0; i < m; ++i) { //we are start at the top of z float z = halfDepth - i*dx; for(DWORD j = 0; j < n; ++j) { //to the left of us float x = -halfWidth + j*dx; float y = 0.0f; vertices[i*n+j].pos = D3DXVECTOR3(x, y, z); vertices[i*n+j].color = D3DXVECTOR4(1.0f, 0.0f, 0.0f, 0.0f); } } int k = 0; DWORD indices[540]; for(DWORD i = 0; i < n-1; ++i) { for(DWORD j = 0; j < n-1; ++j) { indices[k] = (i * n) + j; indices[k + 1] = (i * n) + j + 1; indices[k + 2] = (i + 1) * n + j; indices[k + 3] = (i + 1) * n + j; indices[k + 4] = (i * n) + j + 1; indices[k + 5] = (i + 1) * n + j+ 1; k += 6; } } //Create Layout D3D10_INPUT_ELEMENT_DESC layout[] = { {"POSITION",0,DXGI_FORMAT_R32G32B32_FLOAT, 0 , 0, D3D10_INPUT_PER_VERTEX_DATA, 0}, {"COLOR",0,DXGI_FORMAT_R32G32B32A32_FLOAT, 0 , 12, D3D10_INPUT_PER_VERTEX_DATA, 0} }; UINT numElements = (sizeof(layout)/sizeof(layout[0])); modelObject.numVertices = sizeof(vertices)/sizeof(VertexPos); //Create buffer desc D3D10_BUFFER_DESC bufferDesc; bufferDesc.Usage = D3D10_USAGE_DEFAULT; bufferDesc.ByteWidth = sizeof(VertexPos) * modelObject.numVertices; bufferDesc.BindFlags = D3D10_BIND_VERTEX_BUFFER; bufferDesc.CPUAccessFlags = 0; bufferDesc.MiscFlags = 0; D3D10_SUBRESOURCE_DATA initData; initData.pSysMem = vertices; //Create the buffer HRESULT hr = mpD3DDevice->CreateBuffer(&bufferDesc, &initData, &modelObject.pVertexBuffer); if(FAILED(hr)) return false; modelObject.numIndices = sizeof(indices)/sizeof(DWORD); bufferDesc.ByteWidth = sizeof(DWORD) * modelObject.numIndices; bufferDesc.BindFlags = D3D10_BIND_INDEX_BUFFER; initData.pSysMem = indices; hr = mpD3DDevice->CreateBuffer(&bufferDesc, &initData, &modelObject.pIndicesBuffer); if(FAILED(hr)) return false; ///////////////////////////////////////////////////////////////////////////// //Set up fx files LPCWSTR effectFilename = L"effect.fx"; modelObject.pEffect = NULL; hr = D3DX10CreateEffectFromFile(effectFilename, NULL, NULL, "fx_4_0", D3D10_SHADER_ENABLE_STRICTNESS, 0, mpD3DDevice, NULL, NULL, &modelObject.pEffect, NULL, NULL); if(FAILED(hr)) return false; pProjectionMatrixVariable = modelObject.pEffect->GetVariableByName("Projection")->AsMatrix(); //Dont sweat the technique. Get it! LPCSTR effectTechniqueName = "Render"; modelObject.pTechnique = modelObject.pEffect->GetTechniqueByName(effectTechniqueName); if(modelObject.pTechnique == NULL) return false; //Create Vertex layout D3D10_PASS_DESC passDesc; modelObject.pTechnique->GetPassByIndex(0)->GetDesc(&passDesc); hr = mpD3DDevice->CreateInputLayout(layout, numElements, passDesc.pIAInputSignature, passDesc.IAInputSignatureSize, &modelObject.pVertexLayout); if(FAILED(hr)) return false; return true; }

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  • Go - Concurrent method

    - by nevalu
    How to get a concurrent method? In my case, the library would be called from a program to get a value to each argument str --in method Get()--. When it's used Get() then it assigns a variable from type bytes.Buffer which it will have the value to return. The returned values --when it been concurrently called-- will be stored into a database or a file and it doesn't matter that its output been of FIFO way (from method). type test struct { foo uint8 bar uint8 } func NewTest(arg1 string) (*test, os.Error) {...} func (self *test) Get(str string) ([]byte, os.Error) { var format bytes.Buffer ... } I think that all code inner of method Get() should be put inner of go func() {...}(), and then to use a channel. Would there be a problem if it's called another method from Get()? Or would it also has to be concurrent?

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  • JarOutputStream put parent folder before my-wanted folder

    - by adhitya kristanto
    I tried to make jar with code from How to use JarOutputStream to create a JAR file? but that code always makes new parent folder of my input file/folder before it's inserted into .jar Folder's Path that I want to be added into jar: C:/Trial/MyFolder Folder that I want in MyJar.jar: MyFolder But Folder that was inserted in MyJar.jar: Trial Has it to be done that way? Thanks. here is the code: import EditorXML.GlobalStatus.GlobalStatus; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.jar.JarEntry; import java.util.jar.JarOutputStream; /** * * @author Photosphere */ public class JarCreatingProgram { public JarCreatingProgram() { } public void proceedNow() throws IOException{ File ed = new File("C:/Trial/EditingDini"); File meta = new File("C:/Trial/META-INF"); File net = new File("C:/Trial/net"); File org = new File("C:/Trial/org"); JarOutputStream target = new JarOutputStream(new FileOutputStream("D:/EditingDiniApp.jar")); add(ed, target); add(meta, target); add(net, target); add(org, target); target.close(); } private static void add(File source, JarOutputStream target) throws IOException { BufferedInputStream in = null; try{ if (source.isDirectory()) { String name = source.getPath().replace("\\", "/"); if (!name.isEmpty()) { if (!name.endsWith("/")) name += "/"; JarEntry entry = new JarEntry(name); entry.setTime(source.lastModified()); target.putNextEntry(entry); System.out.println("ENTRY DALAM IF: "+entry.toString()); target.closeEntry(); } for (File nestedFile: source.listFiles()) add(nestedFile, target); return; } JarEntry entry = new JarEntry(source.getPath().replace("\\", "/")); entry.setTime(source.lastModified()); target.putNextEntry(entry); in = new BufferedInputStream(new FileInputStream(source)); System.out.println("ENTRY: "+entry.toString()); byte[] buffer = new byte[1024]; while (true) { int count = in.read(buffer); if (count == -1) break; target.write(buffer, 0, count); } target.closeEntry(); } finally{ if (in != null) in.close(); } } }

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  • Sending while recieving in C

    - by Spidfire
    Ive made a piece of code in whats on my server, the problem is that it doesnt send while im recieving? so if i send something to client 1 to client 2, client2 only recieves if he sends something himself.. how can i solve this ? /* Thread*/ while (! stop_received) { nr_bytes_recv = recv(s, buffer, BUFFSIZE, 0); if(strncmp(buffer, "SEND", 4) == 0) { char *message = "Text asads \n"; rv = send(users[0].s, message, strlen(message), 0); rv = send(users[1].s, message, strlen(message), 0); if (rv < 0) { perror("Error sending"); exit(EXIT_FAILURE); } }else{ char *message = "Unknown command \n"; rv = send(s, message, strlen(message), 0); if (rv < 0) { perror("Error sending"); exit(EXIT_FAILURE); } } }

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  • Does writing program using global variables is safer?

    - by ZoZo123
    I was reading about buffer, stack and heap overflows. I read this post as well. my question is like that: if I use only global variables in my code, can I say it prevents all the exploits of overflow? let's say I have this buffers in code declared in the global scope: char buf1[10]; char buf2[100]; If I send buf1 as the buffer to recv(int s, char *buf, int len,int flags); I will overwrite the data segment and may ruin the buf2 content, right? Would I be able to run a code from it because as I know it is not a code segment and data segment is not executable. Can we conclude that using Globals is the safest way?

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  • Request URL in Javascript, Fetch URL Content using Java Applet, return to Javascript?

    - by Sam G
    I'm in the process of making a little experiment, it grabs a YouTube page, and returns the highest quality MP4 link, then plays this in a HTML 5 Video element. Now I was using PHP with cURL to get the URL content (YouTube), but that only works on my local server (MP4 link is locked to IP address). I can't think of any other way to get the page content due to cross domain rules except a Java applet. So I've built a Java applet that should return the content of a URL. Java import java.applet.Applet; import java.awt.*; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; public class URLFetcherabc extends Applet { public void init() { } public void paint(Graphics g) { g.drawString("Java loaded. Waiting for URL", 0, 10); } public String getURL(String url, String httpMethod) { try { URL u = new URL(url); HttpURLConnection conn = (HttpURLConnection)u.openConnection(); conn.setRequestMethod(httpMethod); InputStream is = conn.getInputStream(); ByteArrayOutputStream output = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; for (int bytesRead = 0; (bytesRead = is.read(buffer)) != -1; ) { output.write(buffer, 0, bytesRead); } return output.toString(); } catch (Exception e) { }return null; } } Now I've got the applet on the page, but every-time I call the function it returns nothing. Heres my HTML for including the applet. HTML <applet id="URLFetcher" name="URLFetcher" code="URLFetcherabc.class" archive="URLFetcher.jar" height="200" width="200" mayscript=""></applet> Java-Script function fetchurl(urltofetch) { var URLFetcher = document.getElementById("URLFetcher"); var result = URLFetcher.getURL(urltofetch); //Result = URL Content return result; } The function always returns null, in Java the function does work when passed a variable via other means (parameter etc). I've tried running other functions through Javascript and the Java applet does respond. I'm new to Java applets and communicating with them via Javascript, so I'm probably making either a small mistake somewhere or its completely wrong. Any ideas? Thanks

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  • Efficiency: what block size of kernel-mode memory allocations?

    - by Robert
    I need a big, driver-internal memory buffer with several tens of megabytes (non-paged, since accessed at dispatcher level). Since I think that allocating chunks of non-continuous memory will more likely succeed than allocating one single continuous memory block (especially when memory becomes fragmented) I want to implement that memory buffer as a linked list of memory blocks. What size should the blocks have to efficiently load the memory pages? (read: not to waste any page space) A multiple of 4096? (equally to the page size of the OS) A multiple of 4000? (not to waste another page for OS-internal memory allocation information) Another size? Target platform is Windows NT = 5.1 (XP and above) Target architectures are x86 and amd64 (not Itanium)

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  • [C] Read line from file without knowing the line length.

    - by ryyst
    Hi, I want to read in a file line by line, without knowing the line length before. Here's what I got so far: int ch = getc(file); int length = 0; char buffer[4095]; while (ch != '\n' && ch != EOF) { ch = getc(file); buffer[length] = ch; length++; } printf("Line length: %d characters.", length); I can now figure out the line length, but only for lines that are shorter than 4095 characters. Is there a better way to do this (I already used fgets() but got told it wasn't the best way)? --Ry

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  • Bit/Byte adressing - Little/Big-endnian

    - by code8230
    Consider the 16-Bit data packet below, which is sent through the network in network byte order ie Big Endian: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (Byte num) 34 67 89 45 90 AB FF 23 65 37 56 C6 56 B7 00 00 (Value) Lets say 8945 is a 16 bit value. All others are 8 bit data bytes. On my system, which is little endian, how would the data be received and stored? Lets say, we are configured to receive 8 bytes at a time. RxBuff is the Rx buffer where data will be received. Buff is the storage buffer where data would be stored. Please point out which case is correct for data storage after reading 8 bytes at a time: 1) Buff[] = {0x34, 0x67, 0x45, 0x89, 0x90, 0xAB....... 0x00}; 2) Buff[] = {0x00, 0x00, .......0x67, 0x89, 0x45, 0x34}; Would the whole 16 bytes data be reversed or only the 2 bytes value contained in this packet?

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  • c++ file bad bit

    - by user230911
    Hi, when I run this code, the open and seekg and tellg operation all success. but when I read it, it fails, the eof,bad,fail bit are 0 1 1. What can cause a file bad? thanks int readriblock(int blockid, char* buffer) { ifstream rifile("./ri/reverseindex.bin", ios::in|ios::binary); rifile.seekg(blockid * RI_BLOCK_SIZE, ios::beg); if(!rifile.good()){ cout<<"block not exsit"<<endl; return -1;} cout<<rifile.tellg()<<endl; rifile.read(buffer, RI_BLOCK_SIZE); **cout<<rifile.eof()<<rifile.bad()<<rifile.fail()<<endl;** if(!rifile.good()){ cout<<"error reading block "<<blockid<<endl; return -1;} rifile.close(); return 0; }

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