Using recv instead of read, for slightly non-blocking reads, without losing blocking writes

guacamole/proxy/guacio.c

@@ -18,17 +18,11 @@ char __GUACIO_BAS64_CHARACTERS[64] = {
 
 GUACIO* guac_open(int fd) {
 
-    int flags;
-
     GUACIO* io = malloc(sizeof(GUACIO));
     io->ready = 0;
     io->written = 0;
     io->fd = fd;
 
-    /* Set O_NONBLOCK */
-    flags = fcntl(io->fd, F_GETFL, 0);
-    fcntl(io->fd, F_SETFL, flags | O_NONBLOCK);
-
     /* Allocate instruction buffer */
     io->instructionbuf_size = 1024;
     io->instructionbuf = malloc(io->instructionbuf_size);

guacamole/proxy/guacio.h

@@ -6,7 +6,7 @@
 
 typedef struct GUACIO {
 
-    int fd;
+    int fd; 
     
     int ready;
     int ready_buf[3];

guacamole/proxy/protocol.c

@@ -4,6 +4,9 @@
 #include <errno.h>
 #include <png.h>
 
+#include <sys/types.h>
+#include <sys/socket.h>
+
 #include "guacio.h"
 #include "protocol.h"
 
@@ -181,10 +184,11 @@ int __guac_fill_instructionbuf(GUACIO* io) {
     int retval;
     
     /* Attempt to fill buffer */
-    retval = read(
+    retval = recv(
             io->fd,
             io->instructionbuf + io->instructionbuf_used_length,
-            io->instructionbuf_size - io->instructionbuf_used_length
+            io->instructionbuf_size - io->instructionbuf_used_length,
+            0
     );
 
     if (retval < 0)