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C++ (Cpp) IHttpStreamAnswer Example

Introduction

The c++ (cpp) ihttpstreamanswer example is extracted from the most popular open source projects, you can refer to the following example for usage.

Programming language: C++ (Cpp)

Class/type: IHttpStreamAnswer

Example#1
File: StreamTests.cppProject: 151706061/OrthancMirror

static bool ReadAllStream(std::string& result,
                          IHttpStreamAnswer& stream,
                          bool allowGzip = false,
                          bool allowDeflate = false)
{
  stream.SetupHttpCompression(allowGzip, allowDeflate);

  result.resize(static_cast<size_t>(stream.GetContentLength()));

  size_t pos = 0;
  while (stream.ReadNextChunk())
  {
    size_t s = stream.GetChunkSize();
    if (pos + s > result.size())
    {
      return false;
    }

    memcpy(&result[pos], stream.GetChunkContent(), s);
    pos += s;
  }

  return pos == result.size();
}

Example#2
File: HttpOutput.cppProject: ming-hai/orthanc

  void HttpOutput::Answer(IHttpStreamAnswer& stream)
  {
    HttpCompression compression = stream.SetupHttpCompression(isGzipAllowed_, isDeflateAllowed_);

    switch (compression)
    {
      case HttpCompression_None:
        break;

      case HttpCompression_Gzip:
        stateMachine_.AddHeader("Content-Encoding", "gzip");
        break;

      case HttpCompression_Deflate:
        stateMachine_.AddHeader("Content-Encoding", "deflate");
        break;

      default:
        throw OrthancException(ErrorCode_ParameterOutOfRange);
    }

    stateMachine_.SetContentLength(stream.GetContentLength());

    std::string contentType = stream.GetContentType();
    if (contentType.empty())
    {
      contentType = "application/octet-stream";
    }

    stateMachine_.SetContentType(contentType.c_str());

    std::string filename;
    if (stream.HasContentFilename(filename))
    {
      SetContentFilename(filename.c_str());
    }

    while (stream.ReadNextChunk())
    {
      stateMachine_.SendBody(stream.GetChunkContent(),
                             stream.GetChunkSize());
    }

    stateMachine_.CloseBody();
  }

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