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lwip_sock: Make sock_tcp_read return data if available

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When reading from the socket with `sock_tcp_read()` it would only return
data from at most one internal connection buffer, even if the buffer
passed to `sock_tcp_read()` is larger and there is more data available
in the connection. This patch makes `sock_tcp_read` process all the
available data so long as there's more data to read available
immediately.
This commit is contained in:
iosabi 2021-04-10 18:45:57 +02:00
parent 0397cab91c
commit e469f2dea4
1 changed files with 6 additions and 1 deletions
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7
pkg/lwip/contrib/sock/tcp/lwip_sock_tcp.c
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@ -353,7 +353,12 @@ ssize_t sock_tcp_read(sock_tcp_t *sock, void *data, size_t max_len,
sock->last_buf = NULL; sock->last_buf = NULL;
sock->last_offset = 0; sock->last_offset = 0;
pbuf_free(buf); pbuf_free(buf);
break; /* Exit the loop only when there's no more data available in the
* connection. This allows to copy more data in a single read if
* available. */
if (!mbox_avail(&sock->base.conn->recvmbox.mbox)) {
break;
}
} }
} }
if (offset > 0) { if (offset > 0) {