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more precise detection of a closed connection

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This commit is contained in:
Darren Ranalli 2008-01-30 21:05:42 +00:00
parent 336b478266
commit 0245552aa1
1 changed files with 15 additions and 2 deletions
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17
panda/src/downloader/bioStreamBuf.cxx
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@ -187,7 +187,11 @@ underflow() {
int os_error = errno;
#endif // WIN32_VC
_is_closed = !BIO_should_retry(*_source);
// if not EOF, there may be more data on the way even if BIO
// indicates that no retry is necessary
//_is_closed = !BIO_should_retry(*_source);
//_is_closed = !BIO_should_read(*_source);
_is_closed = BIO_eof(*_source);
if (_is_closed) {
downloader_cat.info()
<< "Lost connection to "
@ -246,7 +250,16 @@ write_chars(const char *start, size_t length) {
thread_consider_yield();
while (write_count != (int)(length - wrote_so_far)) {
if (write_count <= 0) {
_is_closed = !BIO_should_retry(*_source);
// http://www.openssl.org/docs/crypto/BIO_s_bio.html
// "Calls to BIO_write() will place data in the buffer or
// request a retry if the buffer is full."
//
// when the server is terminated, this seems to be the best
// way of detecting that case on the client: a BIO write error
// without a retry request
//_is_closed = !BIO_should_retry(*_source);
//_is_closed = BIO_eof(*_source);
_is_closed = !BIO_should_write(*_source);
if (_is_closed) {
return wrote_so_far;
}