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RTC: Refine the UDP address parsing, no string

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This commit is contained in:
winlin 2021-02-07 20:05:36 +08:00
parent 95193979f4
commit d41a925694
2 changed files with 44 additions and 30 deletions
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72
trunk/src/app/srs_app_listener.cpp
View file

@ -296,6 +296,7 @@ SrsUdpMuxSocket::SrsUdpMuxSocket(srs_netfd_t fd)
peer_port = 0;
fast_id_ = 0;
address_changed_ = false;
cache_buffer_ = new SrsBuffer(buf, nb_buf);
}
@ -323,39 +324,13 @@ int SrsUdpMuxSocket::recvfrom(srs_utime_t timeout)
}
// Parse address from cache.
bool parsed = false;
if (from.ss_family == AF_INET) {
sockaddr_in* addr = (sockaddr_in*)&from;
// Load from fast cache, previous ip.
std::map<uint32_t, string>::iterator it = cache_.find(addr->sin_addr.s_addr);
if (it == cache_.end()) {
peer_ip = inet_ntoa(addr->sin_addr);
cache_[addr->sin_addr.s_addr] = peer_ip;
} else {
peer_ip = it->second;
}
peer_id_ = "";
peer_port = ntohs(addr->sin_port);
fast_id_ = uint64_t(peer_port)<<48 | uint64_t(addr->sin_addr.s_addr);
parsed = true;
fast_id_ = uint64_t(addr->sin_port)<<48 | uint64_t(addr->sin_addr.s_addr);
}
if (!parsed && nread > 0) {
// TODO: FIXME: Maybe we should not covert to string for each packet.
char address_string[64];
char port_string[16];
if (getnameinfo((sockaddr*)&from, fromlen,
(char*)&address_string, sizeof(address_string),
(char*)&port_string, sizeof(port_string),
NI_NUMERICHOST|NI_NUMERICSERV)) {
return -1;
}
peer_ip = std::string(address_string);
peer_port = atoi(port_string);
}
// We will regenerate the peer_ip, peer_port and peer_id.
address_changed_ = true;
return nread;
}
@ -414,11 +389,48 @@ int SrsUdpMuxSocket::get_peer_port() const
std::string SrsUdpMuxSocket::peer_id()
{
if (peer_id_.empty()) {
if (address_changed_) {
address_changed_ = false;
// Parse address from cache.
bool parsed = false;
if (from.ss_family == AF_INET) {
sockaddr_in* addr = (sockaddr_in*)&from;
// Load from fast cache, previous ip.
std::map<uint32_t, string>::iterator it = cache_.find(addr->sin_addr.s_addr);
if (it == cache_.end()) {
peer_ip = inet_ntoa(addr->sin_addr);
cache_[addr->sin_addr.s_addr] = peer_ip;
} else {
peer_ip = it->second;
}
peer_port = ntohs(addr->sin_port);
parsed = true;
}
if (!parsed) {
// TODO: FIXME: Maybe we should not covert to string for each packet.
char address_string[64];
char port_string[16];
if (getnameinfo((sockaddr*)&from, fromlen,
(char*)&address_string, sizeof(address_string),
(char*)&port_string, sizeof(port_string),
NI_NUMERICHOST|NI_NUMERICSERV)) {
return "";
}
peer_ip = std::string(address_string);
peer_port = atoi(port_string);
}
// Build the peer id.
static char id_buf[128];
int len = snprintf(id_buf, sizeof(id_buf), "%s:%d", peer_ip.c_str(), peer_port);
peer_id_ = string(id_buf, len);
}
return peer_id_;
}

2
trunk/src/app/srs_app_listener.hpp
View file

@ -153,6 +153,8 @@ private:
private:
// Cache for peer id.
std::string peer_id_;
// If the address changed, we should generate the peer_id.
bool address_changed_;
// For IPv4 client, we use 8 bytes int id to find it fastly.
uint64_t fast_id_;
public: