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Fix bug in transport_tcp #1050

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merged 2 commits into from
May 17, 2017
Merged

Fix bug in transport_tcp #1050

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9a9dacb
Fix bug in transport_tcp
bxwllzz May 9, 2017
429f019
Modify code format
bxwllzz May 17, 2017
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5 changes: 3 additions & 2 deletions clients/roscpp/src/libros/transport/transport_tcp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -311,9 +311,10 @@ bool TransportTCP::connect(const std::string& host, int port)

int ret = ::connect(sock_, (sockaddr*) &sas, sas_len);
// windows might need some time to sleep (input from service robotics hack) add this if testing proves it is necessary.
ROS_ASSERT((flags_ & SYNCHRONOUS) || ret != 0);
// ROS_ASSERT((flags_ & SYNCHRONOUS) || ret != 0);
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Should this commented line be left in?

There is no comment near it to explain what is going on here.

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It could indeed be removed since it doesn't match the behavior on Windows.

if (((flags_ & SYNCHRONOUS) && ret != 0) || // synchronous, connect() should return 0
(!(flags_ & SYNCHRONOUS) && last_socket_error() != ROS_SOCKETS_ASYNCHRONOUS_CONNECT_RETURN)) // asynchronous, connect() should return -1 and WSAGetLastError()=WSAEWOULDBLOCK/errno=EINPROGRESS
(!(flags_ & SYNCHRONOUS) && ret != 0 && last_socket_error() != ROS_SOCKETS_ASYNCHRONOUS_CONNECT_RETURN))
// asynchronous, connect() may return 0 or -1. When return -1, WSAGetLastError()=WSAEWOULDBLOCK/errno=EINPROGRESS
{
ROSCPP_CONN_LOG_DEBUG("Connect to tcpros publisher [%s:%d] failed with error [%d, %s]", host.c_str(), port, ret, last_socket_error_string());
close();
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