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replace sockaddr_in -> sockaddr_storage to support IPv6

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SASANO Takayoshi
2019-10-23 12:04:06 +09:00
parent 47bc9c5bcd
commit 249bae1e7b
6 changed files with 122 additions and 108 deletions
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117
UDPSocket.cpp
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@@ -62,49 +62,46 @@ CUDPSocket::~CUDPSocket()
#endif
}
in_addr CUDPSocket::lookup(const std::string& hostname)
int CUDPSocket::lookup(const std::string& hostname, unsigned int port, sockaddr_storage &addr, unsigned int &address_length)
{
in_addr addr;
#if defined(_WIN32) || defined(_WIN64)
unsigned long address = ::inet_addr(hostname.c_str());
if (address != INADDR_NONE && address != INADDR_ANY) {
addr.s_addr = address;
return addr;
int err;
std::string portstr = std::to_string(port);
struct addrinfo hints, *res;
::memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_flags = AI_NUMERICSERV;
err = getaddrinfo(hostname.c_str(), portstr.c_str(), &hints, &res);
if (err) {
sockaddr_in *paddr = (sockaddr_in *)&addr;
::memset(paddr, 0, address_length = sizeof(sockaddr_in));
paddr->sin_family = AF_INET;
paddr->sin_port = htons(port);
paddr->sin_addr.s_addr = htonl(INADDR_NONE);
LogError("Cannot find address for host %s", hostname.c_str());
return err;
}
struct hostent* hp = ::gethostbyname(hostname.c_str());
if (hp != NULL) {
::memcpy(&addr, hp->h_addr_list[0], sizeof(struct in_addr));
return addr;
}
::memcpy(&addr, res->ai_addr, address_length = res->ai_addrlen);
LogError("Cannot find address for host %s", hostname.c_str());
addr.s_addr = INADDR_NONE;
return addr;
#else
in_addr_t address = ::inet_addr(hostname.c_str());
if (address != in_addr_t(-1)) {
addr.s_addr = address;
return addr;
}
struct hostent* hp = ::gethostbyname(hostname.c_str());
if (hp != NULL) {
::memcpy(&addr, hp->h_addr_list[0], sizeof(struct in_addr));
return addr;
}
LogError("Cannot find address for host %s", hostname.c_str());
addr.s_addr = INADDR_NONE;
return addr;
#endif
freeaddrinfo(res);
return 0;
}
bool CUDPSocket::open()
{
m_fd = ::socket(PF_INET, SOCK_DGRAM, 0);
int err;
sockaddr_storage addr;
unsigned int addrlen;
/* to determine protocol family, call lookup() first. */
err = lookup(m_address.empty() ? "0.0.0.0" : m_address.c_str(), m_port, addr, addrlen);
if (err) {
LogError("The local address is invalid - %s", m_address.c_str());
return false;
}
m_fd = ::socket(addr.ss_family, SOCK_DGRAM, 0);
if (m_fd < 0) {
#if defined(_WIN32) || defined(_WIN64)
LogError("Cannot create the UDP socket, err: %lu", ::GetLastError());
@@ -115,24 +112,6 @@ bool CUDPSocket::open()
}
if (m_port > 0U) {
sockaddr_in addr;
::memset(&addr, 0x00, sizeof(sockaddr_in));
addr.sin_family = AF_INET;
addr.sin_port = htons(m_port);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
if (!m_address.empty()) {
#if defined(_WIN32) || defined(_WIN64)
addr.sin_addr.s_addr = ::inet_addr(m_address.c_str());
#else
addr.sin_addr.s_addr = ::inet_addr(m_address.c_str());
#endif
if (addr.sin_addr.s_addr == INADDR_NONE) {
LogError("The local address is invalid - %s", m_address.c_str());
return false;
}
}
int reuse = 1;
if (::setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, sizeof(reuse)) == -1) {
#if defined(_WIN32) || defined(_WIN64)
@@ -143,7 +122,7 @@ bool CUDPSocket::open()
return false;
}
if (::bind(m_fd, (sockaddr*)&addr, sizeof(sockaddr_in)) == -1) {
if (::bind(m_fd, (sockaddr*)&addr, addrlen) == -1) {
#if defined(_WIN32) || defined(_WIN64)
LogError("Cannot bind the UDP address, err: %lu", ::GetLastError());
#else
@@ -151,12 +130,14 @@ bool CUDPSocket::open()
#endif
return false;
}
LogInfo("Opening UDP port on %u", m_port);
}
return true;
}
int CUDPSocket::read(unsigned char* buffer, unsigned int length, in_addr& address, unsigned int& port)
int CUDPSocket::read(unsigned char* buffer, unsigned int length, sockaddr_storage& address, unsigned int &address_length)
{
assert(buffer != NULL);
assert(length > 0U);
@@ -188,17 +169,16 @@ int CUDPSocket::read(unsigned char* buffer, unsigned int length, in_addr& addres
if (ret == 0)
return 0;
sockaddr_in addr;
#if defined(_WIN32) || defined(_WIN64)
int size = sizeof(sockaddr_in);
int size = sizeof(sockaddr_storage);
#else
socklen_t size = sizeof(sockaddr_in);
socklen_t size = sizeof(sockaddr_storage);
#endif
#if defined(_WIN32) || defined(_WIN64)
int len = ::recvfrom(m_fd, (char*)buffer, length, 0, (sockaddr *)&addr, &size);
int len = ::recvfrom(m_fd, (char*)buffer, length, 0, (sockaddr *)&address, &size);
#else
ssize_t len = ::recvfrom(m_fd, (char*)buffer, length, 0, (sockaddr *)&addr, &size);
ssize_t len = ::recvfrom(m_fd, (char*)buffer, length, 0, (sockaddr *)&address, &size);
#endif
if (len <= 0) {
#if defined(_WIN32) || defined(_WIN64)
@@ -209,28 +189,19 @@ int CUDPSocket::read(unsigned char* buffer, unsigned int length, in_addr& addres
return -1;
}
address = addr.sin_addr;
port = ntohs(addr.sin_port);
address_length = size;
return len;
}
bool CUDPSocket::write(const unsigned char* buffer, unsigned int length, const in_addr& address, unsigned int port)
bool CUDPSocket::write(const unsigned char* buffer, unsigned int length, const sockaddr_storage& address, unsigned int address_length)
{
assert(buffer != NULL);
assert(length > 0U);
sockaddr_in addr;
::memset(&addr, 0x00, sizeof(sockaddr_in));
addr.sin_family = AF_INET;
addr.sin_addr = address;
addr.sin_port = htons(port);
#if defined(_WIN32) || defined(_WIN64)
int ret = ::sendto(m_fd, (char *)buffer, length, 0, (sockaddr *)&addr, sizeof(sockaddr_in));
int ret = ::sendto(m_fd, (char *)buffer, length, 0, (sockaddr *)&address, address_length);
#else
ssize_t ret = ::sendto(m_fd, (char *)buffer, length, 0, (sockaddr *)&addr, sizeof(sockaddr_in));
ssize_t ret = ::sendto(m_fd, (char *)buffer, length, 0, (sockaddr *)&address, address_length);
#endif
if (ret < 0) {
#if defined(_WIN32) || defined(_WIN64)