1 files changed, 6 insertions, 7 deletions

diff --git a/src/usbmux.c b/src/usbmux.c
index d7f0710..1d6497e 100644
--- a/src/usbmux.c
+++ b/src/usbmux.c
@@ -28,7 +28,6 @@
 
 #define BULKIN 0x85
 #define BULKOUT 0x04
-#define HEADERLEN 28
 
 static const uint8_t TCP_FIN = 1;
 static const uint8_t TCP_SYN = 1 << 1;
@@ -570,7 +569,7 @@ usbmux_tcp_header *new_mux_packet(uint16_t s_port, uint16_t d_port)
         usbmux_tcp_header *conn =
                 (usbmux_tcp_header *) malloc(sizeof(usbmux_tcp_header));
         conn->type = htonl(6);
-        conn->length = HEADERLEN;
+        conn->length = sizeof(usbmux_tcp_header);
         conn->sport = htons(s_port);
         conn->dport = htons(d_port);
         conn->scnt = 0;
@@ -578,7 +577,7 @@ usbmux_tcp_header *new_mux_packet(uint16_t s_port, uint16_t d_port)
         conn->offset = 0x50;
         conn->window = htons(0x0200);
         conn->nullnull = 0x0000;
-        conn->length16 = HEADERLEN;
+        conn->length16 = sizeof(usbmux_tcp_header);
         return conn;
 }
 
@@ -879,7 +878,7 @@ int usbmux_send(usbmux_client_t client, const char *data, uint32_t datalen,
                 return sendresult;
         } else if ((uint32_t) sendresult == blocksize) {
                 // actual number of data bytes sent.
-                *sent_bytes = sendresult - HEADERLEN;
+                *sent_bytes = sendresult - sizeof(usbmux_tcp_header);
                 return 0;
         } else {
                 fprintf(stderr,
@@ -903,9 +902,9 @@ uint32_t append_receive_buffer(usbmux_client_t client, char *packet)
                 return 0;
 
         usbmux_tcp_header *header = (usbmux_tcp_header *) packet;
-        char *data = &packet[HEADERLEN];
+        char *data = &packet[sizeof(usbmux_tcp_header)];
         uint32_t packetlen = ntohl(header->length);
-        uint32_t datalen = packetlen - HEADERLEN;
+        uint32_t datalen = packetlen - sizeof(usbmux_tcp_header);
 
         int dobroadcast = 0;
 
@@ -1114,7 +1113,7 @@ int usbmux_pullbulk(usbmux_device_t device)
         cursor = device->usbReceive.buffer;
         while (1) {
                 // check if there's even sufficient data to decode a header
-                if (device->usbReceive.leftover < HEADERLEN)
+                if (device->usbReceive.leftover < sizeof(usbmux_tcp_header))
                         break;
                 usbmux_tcp_header *header = (usbmux_tcp_header *) cursor;