forked from huawei/openGauss-server
Update mc_tcp.cpp
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@ -81,6 +81,27 @@ void mc_tcp_set_keepalive(int fd)
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mc_tcp_setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, (char*)&count, sizeof(count));
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}
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/*
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function name: mc_tcp_get_peer_name
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description: This function is used to obtain the host IP and port number of the host bound to the specific socket.
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arguments: The first argument is a descriptor to a specified socket.
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The second argument is used to store the host IP address bound to the socket determined by the first parameter, in dotted decimal.
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The third parameter is used to store the port number bound to a specific socket, in the order of host bytes.
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return value: Return 0 if the function runs successfully.
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When the call to the getpeername() function fails:
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1、Return EBADF if the socket argument is not a valid file descriptor.
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2、Return EINVAL if the socket has been shut down.
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3、Return ENOTCONN if the socket is not connected or otherwise has not had the peer pre-specified.
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4、Return ENOTSOCK if the socket argument does not refer to a socket.
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5、Return EOPNOTSUPP if the operation is not supported for the socket protocol.
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6、Return ENOBUFS if insufficient resources were available in the system to complete the call.
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Return -2 when the host IP address belongs to IPv4 type, it fails to convert it to dotted decimal.
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Return -3 when the host IP address belongs to IPv6 type, it fails to convert it to dotted decimal.
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Return -4 when the error type is not any of the above.
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note: Allocate a certain amount of memory space for the host and port pointers respectively in advance.
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date: 2022/8/9
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contact tel: 18720816902
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*/
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int mc_tcp_get_peer_name(int fd, char* host, int* port)
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{
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struct sockaddr peeraddr = {0};
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