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An improved patch for the Client part of issue 416 (adding a multi-byte read). This one moves all of the checking into recv, so that single-byte reads also benefit. It also returns -1 if there's no data available unless we've reached EOF, in which case it returns 0.

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This commit is contained in:
amcewen
2011-01-02 22:21:24 +00:00
parent bc0f3c4fe1
commit 81b6c69f29
3 changed files with 24 additions and 8 deletions
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14
libraries/Ethernet/utility/socket.cpp
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@ -146,14 +146,18 @@ uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len)
*/
uint16_t recv(SOCKET s, uint8_t *buf, uint16_t len)
{
uint16_t ret=0;
if ( len > 0 )
// Check how much data is available
uint16_t ret = W5100.getRXReceivedSize(s);
if (ret > len)
{
W5100.recv_data_processing(s, buf, len);
W5100.execCmdSn(s, Sock_RECV);
ret = len;
}
if ( ret > 0 )
{
W5100.recv_data_processing(s, buf, ret);
W5100.execCmdSn(s, Sock_RECV);
}
return ret;
}