Return http::error::end_of_stream on HTTP read eof (API Change)

fix #350

include/beast/http/impl/async_read.ipp

@@ -185,8 +185,11 @@ operator()(error_code ec,
                 BOOST_ASSERT(bytes_transferred == 0);
                 d.bytes_used = 0;
                 if(! d.p.got_some())
+                {
+                    ec = error::end_of_stream;
                     goto upcall;
-                // caller sees EOF on next read.
+                }
+                // caller sees end_of_stream on next read.
                 ec = {};
                 d.p.write_eof(ec);
                 if(ec)
@@ -194,7 +197,7 @@ operator()(error_code ec,
                 BOOST_ASSERT(d.p.is_complete());
                 goto upcall;
             }
-            else if(ec)
+            if(ec)
             {
                 d.bytes_used = 0;
                 goto upcall;

include/beast/http/impl/read.ipp

@@ -76,7 +76,9 @@ read_some_buffer(
                 if(ec)
                     return 0;
                 BOOST_ASSERT(parser.is_complete());
+                break;
             }
+            ec = error::end_of_stream;
             break;
         }
         else if(ec)

include/beast/http/read.hpp

@@ -41,6 +41,11 @@ namespace http {
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+    
     @param stream The stream from which the data is to be read.
     The type must support the @b SyncReadStream concept.
 
@@ -92,6 +97,11 @@ read_some(
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b SyncReadStream concept.
 
@@ -151,6 +161,11 @@ read_some(
     processed from the dynamic buffer. The caller should remove
     these bytes by calling `consume` on the dynamic buffer.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b AsyncReadStream concept.
 
@@ -205,6 +220,11 @@ async_read_some(
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b SyncReadStream concept.
 
@@ -244,6 +264,11 @@ read(
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b SyncReadStream concept.
 
@@ -287,6 +312,11 @@ read(
     end of the object being parsed. This additional data is stored
     in the stream buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b AsyncReadStream concept.
 
@@ -338,6 +368,11 @@ async_read(
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b `SyncReadStream` concept.
 
@@ -379,6 +414,11 @@ read(
     being parsed. This additional data is stored in the dynamic
     buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream from which the data is to be read.
     The type must support the @b `SyncReadStream` concept.
 
@@ -424,6 +464,11 @@ read(
     end of the message being parsed. This additional data is stored
     in the dynamic buffer, which may be used in subsequent calls.
 
+    If the end of the stream is reached during the read, the
+    value @ref error::partial_message is indicated as the
+    error if bytes have been processed, else the error
+    @ref error::end_of_stream is indicated.
+
     @param stream The stream to read the message from.
     The type must support the @b `AsyncReadStream` concept.