[libmicrohttpd] 01/02: Added new connection state MHD_CONNECTION_REQ_LINE_RECEIVING

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karlson2k pushed a commit to branch master
in repository libmicrohttpd.

commit 37593020c7a414e7e65bd56ad55a4ba8c1c832eb
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Sat Aug 21 19:44:48 2021 +0300

    Added new connection state MHD_CONNECTION_REQ_LINE_RECEIVING
    
    This allow to distinguish between connections received any data and
    connections without any incoming data.
---
 src/microhttpd/connection.c | 9 +++++++++
 src/microhttpd/internal.h   | 8 +++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/microhttpd/connection.c b/src/microhttpd/connection.c
index 104df287..c5f86cc2 100644
--- a/src/microhttpd/connection.c
+++ b/src/microhttpd/connection.c
@@ -2238,6 +2238,7 @@ MHD_connection_update_event_loop_info (struct 
MHD_Connection *connection)
     switch (connection->state)
     {
     case MHD_CONNECTION_INIT:
+    case MHD_CONNECTION_REQ_LINE_RECEIVING:
     case MHD_CONNECTION_URL_RECEIVED:
     case MHD_CONNECTION_HEADER_PART_RECEIVED:
       /* while reading headers, we always grow the
@@ -3529,6 +3530,7 @@ MHD_connection_handle_read (struct MHD_Connection 
*connection)
   switch (connection->state)
   {
   case MHD_CONNECTION_INIT:
+  case MHD_CONNECTION_REQ_LINE_RECEIVING:
   case MHD_CONNECTION_URL_RECEIVED:
   case MHD_CONNECTION_HEADER_PART_RECEIVED:
   case MHD_CONNECTION_HEADERS_RECEIVED:
@@ -3597,6 +3599,7 @@ MHD_connection_handle_write (struct MHD_Connection 
*connection)
   switch (connection->state)
   {
   case MHD_CONNECTION_INIT:
+  case MHD_CONNECTION_REQ_LINE_RECEIVING:
   case MHD_CONNECTION_URL_RECEIVED:
   case MHD_CONNECTION_HEADER_PART_RECEIVED:
   case MHD_CONNECTION_HEADERS_RECEIVED:
@@ -4103,6 +4106,7 @@ MHD_connection_handle_idle (struct MHD_Connection 
*connection)
     switch (connection->state)
     {
     case MHD_CONNECTION_INIT:
+    case MHD_CONNECTION_REQ_LINE_RECEIVING:
       line = get_next_header_line (connection,
                                    &line_len);
       if (NULL != line)
@@ -4110,8 +4114,11 @@ MHD_connection_handle_idle (struct MHD_Connection 
*connection)
         /* Check for empty string, as we might want
            to tolerate 'spurious' empty lines */
         if (0 == line[0])
+        {
           /* TODO: Add MHD option to not tolerate it */
+          connection->state = MHD_CONNECTION_INIT;
           continue; /* Process the next line */
+        }
         if (MHD_NO == parse_initial_message_line (connection,
                                                   line,
                                                   line_len))
@@ -4130,6 +4137,8 @@ MHD_connection_handle_idle (struct MHD_Connection 
*connection)
         mhd_assert (MHD_CONNECTION_INIT != connection->state);
         continue;
       }
+      if (0 < connection->read_buffer_offset)
+        connection->state = MHD_CONNECTION_REQ_LINE_RECEIVING;
       break;
     case MHD_CONNECTION_URL_RECEIVED:
       line = get_next_header_line (connection,
diff --git a/src/microhttpd/internal.h b/src/microhttpd/internal.h
index a2a454f1..ae91719e 100644
--- a/src/microhttpd/internal.h
+++ b/src/microhttpd/internal.h
@@ -568,10 +568,16 @@ enum MHD_CONNECTION_STATE
    */
   MHD_CONNECTION_INIT = 0,
 
+  /**
+   * Part of the request line was received.
+   * Wait for complete line.
+   */
+  MHD_CONNECTION_REQ_LINE_RECEIVING = MHD_CONNECTION_INIT + 1,
+
   /**
    * We got the URL (and request type and version).  Wait for a header line.
    */
-  MHD_CONNECTION_URL_RECEIVED = MHD_CONNECTION_INIT + 1,
+  MHD_CONNECTION_URL_RECEIVED = MHD_CONNECTION_REQ_LINE_RECEIVING + 1,
 
   /**
    * We got part of a multi-line request header.  Wait for the rest.

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