Package org.apache.http.impl.io

Class ContentLengthOutputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable
    public class ContentLengthOutputStream
extends java.io.OutputStream
    Output stream that cuts off after a defined number of bytes. This class is used to send content of HTTP messages where the end of the content entity is determined by the value of the Content-Length header. Entities transferred using this stream can be maximum Long.MAX_VALUE long.

    Note that this class NEVER closes the underlying stream, even when close gets called. Instead, the stream will be marked as closed and no further output will be permitted.

    Since:
    4.0

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private boolean closed
      True if the stream is closed.
      private long contentLength
      The maximum number of bytes that can be written the stream.
      private SessionOutputBuffer out
      Wrapped session output buffer.
      private long total
      Total bytes written

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Does not close the underlying socket output.
      void flush()  
      void write​(byte[] b)  
      void write​(byte[] b, int off, int len)  
      void write​(int b)  

      • Methods inherited from class java.io.OutputStream

        nullOutputStream

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • contentLength

        private final long contentLength
        The maximum number of bytes that can be written the stream. Subsequent write operations will be ignored.

      • total

        private long total
        Total bytes written

      • closed

        private boolean closed
        True if the stream is closed.

    • Constructor Detail

      • ContentLengthOutputStream

        public ContentLengthOutputStream​(SessionOutputBuffer out,
                                 long contentLength)
        Wraps a session output buffer and cuts off output after a defined number of bytes.
        Parameters:
        out - The session output buffer
        contentLength - The maximum number of bytes that can be written to the stream. Subsequent write operations will be ignored.
        Since:
        4.0

    • Method Detail

      • close

        public void close()
           throws java.io.IOException

        Does not close the underlying socket output.

        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Overrides:
        close in class java.io.OutputStream
        Throws:
        java.io.IOException - If an I/O problem occurs.

      • flush

        public void flush()
           throws java.io.IOException
        Specified by:
        flush in interface java.io.Flushable
        Overrides:
        flush in class java.io.OutputStream
        Throws:
        java.io.IOException

      • write

        public void write​(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException
        Overrides:
        write in class java.io.OutputStream
        Throws:
        java.io.IOException

      • write

        public void write​(byte[] b)
           throws java.io.IOException
        Overrides:
        write in class java.io.OutputStream
        Throws:
        java.io.IOException

      • write

        public void write​(int b)
           throws java.io.IOException
        Specified by:
        write in class java.io.OutputStream
        Throws:
        java.io.IOException