SocketStream 与80端口通信的时候获取Header问题

Question

代码：

HostName^ hostname;

hostname = ref new HostName("ericye.in");

StreamSocket^ osk = ref new StreamSocket();

CoreApplication::Properties->Insert("connected_lekan", osk);

task<void>(osk->ConnectAsync(hostname,L"80", SocketProtectionLevel::PlainSocket)).then([this] (task<void> previousTask)

    {

            previousTask.get();

StreamSocket^ socket = dynamic_cast<StreamSocket^>(CoreApplication::Properties->Lookup("connected_lekan"));

DataWriter^ socket_write = ref new DataWriter(socket->OutputStream);

String^ write_string_new = ref new String(L"GET /css/layout.css HTTP/1.0\r\nHost: ericye.in\r\nUser-Agent: Win8\r\n\r\n");

socket_write->WriteUInt32(socket_write->MeasureString(write_string_new));

socket_write->WriteString(write_string_new);

task<unsigned int>(socket_write->StoreAsync()).then([this, socket, write_string_new] (task<unsigned int> writeTask){

try

{

DataReader^ res = ref new DataReader(socket->InputStream);

uint32 stringLength= 1024;

task<unsigned int>(res->LoadAsync(1024)).then([this, res, stringLength] (unsigned int actualStringLength)

{

byte by = res->ReadByte();

String^ data = res->ReadString(res->UnconsumedBufferLength);

return;

});

}

catch (Exception^ exception)

{

return;

}

    });

});

通过上面的代码能获取网页正文。但是无法获取Header信息。

谢谢

Answer 1

托管代码看不大懂。

String^ write_string_new = ref new String(L"GET /css/layout.css HTTP/1.0\r\nHost: ericye.in\r\nUser-Agent: Win8\r\n\r\n");

应该是L导致的，L的意思是wchar_t类型的数据（一个字母占两个字节）

而一般在网络上用的都是char，所以对方服务器是理解不了你这句话的，应该会直接把你关闭

---

0xDEADBEEF

Answer 2

貌似不是那个问题。我在服务器端看到了请求。并且请求成功了。但是现在出现的问题是：该操作尝试访问的数据超出了有效范围

task<unsigned int>(socket_write->StoreAsync()).then([this, socket, write_string_new] (task<unsigned int> writeTask){

try

{

//writeTask.get();

DataReader^ res = ref new DataReader(socket->InputStream);

uint32 stringLength= res->ReadInt32();

task<unsigned int>(res->LoadAsync(stringLength)).then([this, res, stringLength] (unsigned int actualStringLength)

{

String^ data = res->ReadString(res->UnconsumedBufferLength);

return;

});

}

catch (Exception^ exception)

{

xids->Text = "Error:"+exception->Message;

return;

}

});