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Support longer responses from device (needed for HS300)

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This commit is contained in:
Jason Benaim 2019-03-03 21:49:32 -08:00
parent 94d4f10d87
commit 5d16c96ef0
1 changed files with 9 additions and 7 deletions
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16
comms.c
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@ -8,8 +8,6 @@
#include <unistd.h> #include <unistd.h>
#include "comms.h" #include "comms.h"
#define RECV_BUF_SIZE 4096
bool hs100_encrypt(uint8_t *d, uint8_t *s, size_t len) bool hs100_encrypt(uint8_t *d, uint8_t *s, size_t len)
{ {
if( d == NULL) if( d == NULL)
@ -117,11 +115,15 @@ char *hs100_send(char *servaddr, char *msg)
send(sock, s, s_len, 0); send(sock, s, s_len, 0);
free(s); free(s);
uint8_t recvbuf[RECV_BUF_SIZE]; uint32_t msglen;
size_t received_size = recv(sock, recvbuf, RECV_BUF_SIZE, 0); size_t recvsize = recv (sock, &msglen, sizeof(msglen), MSG_PEEK);
close(sock); if (recvsize != sizeof(msglen)) {
if (received_size == 0)
return NULL; return NULL;
char *recvmsg = hs100_decode(recvbuf, received_size); }
msglen = ntohl(msglen) + 4;
uint8_t *recvbuf = calloc(1, (size_t)msglen);
recvsize = recv(sock, recvbuf, msglen, MSG_WAITALL);
close(sock);
char *recvmsg = hs100_decode(recvbuf, msglen);
return recvmsg; return recvmsg;
} }