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WiFiClient.cpp - Fix connect() behavior (#2784)

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* WiFiClient.cpp - Fix connect() behavior

* lwip_connect_r() : check return code
This commit is contained in:
Felix Weinrank 2019-07-09 18:48:05 +02:00 committed by Me No Dev
parent ca7106e97e
commit d5fdd715ef
1 changed files with 32 additions and 5 deletions
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37
libraries/WiFi/src/WiFiClient.cpp
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@ -226,14 +226,41 @@ int WiFiClient::connect(IPAddress ip, uint16_t port, int32_t timeout)
FD_SET(sockfd, &fdset);
tv.tv_sec = 0;
tv.tv_usec = timeout * 1000;
lwip_connect_r(sockfd, (struct sockaddr*)&serveraddr, sizeof(serveraddr));
int res = select(sockfd + 1, nullptr, &fdset, nullptr, timeout<0 ? nullptr : &tv);
if (res != 1)
{
log_e("select: %d",errno);
int res = lwip_connect_r(sockfd, (struct sockaddr*)&serveraddr, sizeof(serveraddr));
if (res < 0 && errno != EINPROGRESS) {
log_e("connect on fd %d, errno: %d, \"%s\"", sockfd, errno, strerror(errno));
close(sockfd);
return 0;
}
res = select(sockfd + 1, nullptr, &fdset, nullptr, timeout<0 ? nullptr : &tv);
if (res < 0) {
log_e("select on fd %d, errno: %d, \"%s\"", sockfd, errno, strerror(errno));
close(sockfd);
return 0;
} else if (res == 0) {
log_i("select returned due to timeout %d ms for fd %d", timeout, sockfd);
close(sockfd);
return 0;
} else {
int sockerr;
socklen_t len = (socklen_t)sizeof(int);
res = getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &sockerr, &len);
if (res < 0) {
log_e("getsockopt on fd %d, errno: %d, \"%s\"", sockfd, errno, strerror(errno));
close(sockfd);
return 0;
}
if (sockerr != 0) {
log_e("socket error on fd %d, errno: %d, \"%s\"", sockfd, sockerr, strerror(sockerr));
close(sockfd);
return 0;
}
}
fcntl( sockfd, F_SETFL, fcntl( sockfd, F_GETFL, 0 ) & (~O_NONBLOCK) );
clientSocketHandle.reset(new WiFiClientSocketHandle(sockfd));
_rxBuffer.reset(new WiFiClientRxBuffer(sockfd));