diff --git a/docs/examples/fopen.c b/docs/examples/fopen.c
index 6fe5c0f9fb8c6e9b6b21a39855ec9e01c7b4de70..c26c0de04ca2d460ec1271ce54ed3a1f08aa56db 100644
--- a/docs/examples/fopen.c
+++ b/docs/examples/fopen.c
@@ -128,6 +128,7 @@ static int fill_buffer(URL_FILE *file, size_t want)
fd_set fdexcep;
struct timeval timeout;
int rc;
+ CURLMcode mc; /* curl_multi_fdset() return code */
/* only attempt to fill buffer if transactions still running and buffer
* doesnt exceed required size already
@@ -158,15 +159,31 @@ static int fill_buffer(URL_FILE *file, size_t want)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially
- in case of (maxfd == -1), we call select(0, ...), which is basically
- equal to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/imap-multi.c b/docs/examples/imap-multi.c
index 601205a087931914af8a10160cf72f2db0f2b5a4..c8c67ff87bac455f204e7793399654256adb9e0f 100644
--- a/docs/examples/imap-multi.c
+++ b/docs/examples/imap-multi.c
@@ -88,6 +88,7 @@ int main(void)
fd_set fdexcep;
int maxfd = -1;
int rc;
+ CURLMcode mc; /* curl_multi_fdset() return code */
long curl_timeo = -1;
@@ -109,15 +110,32 @@ int main(void)
timeout.tv_usec = (curl_timeo % 1000) * 1000;
}
- /* Get file descriptors from the transfers */
- curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
- rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
if(tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) {
fprintf(stderr,
diff --git a/docs/examples/multi-app.c b/docs/examples/multi-app.c
index a5f71c5ac66d69dc5f534e7a747d1b972dd05553..bf0f11ad5bbd02c0410f99fa4dd6b63a3033e7b0 100644
--- a/docs/examples/multi-app.c
+++ b/docs/examples/multi-app.c
@@ -73,6 +73,7 @@ int main(void)
do {
struct timeval timeout;
int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
fd_set fdread;
fd_set fdwrite;
@@ -99,15 +100,31 @@ int main(void)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/multi-debugcallback.c b/docs/examples/multi-debugcallback.c
index 8eedcee5b543f41347c19a4d6150141c9791c87f..31dec5472a2d91f1efc27b1b19955c6059547c85 100644
--- a/docs/examples/multi-debugcallback.c
+++ b/docs/examples/multi-debugcallback.c
@@ -147,6 +147,7 @@ int main(void)
do {
struct timeval timeout;
int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
fd_set fdread;
fd_set fdwrite;
@@ -173,15 +174,31 @@ int main(void)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/multi-double.c b/docs/examples/multi-double.c
index 91422e6e2ddb2e50a6174c92cc428993b2996a02..df0922a1c9fb299150e77f881d1027f094937aa4 100644
--- a/docs/examples/multi-double.c
+++ b/docs/examples/multi-double.c
@@ -62,6 +62,7 @@ int main(void)
do {
struct timeval timeout;
int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
fd_set fdread;
fd_set fdwrite;
@@ -88,15 +89,31 @@ int main(void)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/multi-post.c b/docs/examples/multi-post.c
index 965a2c3f6958c89d803a7bc9ad6683c3f31e4860..a6cc8683cd2297ffbfd190244c86bcc2a10d5bd0 100644
--- a/docs/examples/multi-post.c
+++ b/docs/examples/multi-post.c
@@ -83,6 +83,7 @@ int main(void)
do {
struct timeval timeout;
int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
fd_set fdread;
fd_set fdwrite;
@@ -109,15 +110,31 @@ int main(void)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/multi-single.c b/docs/examples/multi-single.c
index 37a01cd8332df489a81a93111335faffad478749..3d80c655fc788b3ba7a720985b7dbe9cdad8d450 100644
--- a/docs/examples/multi-single.c
+++ b/docs/examples/multi-single.c
@@ -60,6 +60,7 @@ int main(void)
do {
struct timeval timeout;
int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
fd_set fdread;
fd_set fdwrite;
@@ -86,15 +87,31 @@ int main(void)
}
/* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
switch(rc) {
case -1:
diff --git a/docs/examples/pop3-multi.c b/docs/examples/pop3-multi.c
index d14d1159b2d85466da4f59deb89cafae9ae733c4..42142f95410c999968dcafd478b29b48be32b75a 100644
--- a/docs/examples/pop3-multi.c
+++ b/docs/examples/pop3-multi.c
@@ -88,6 +88,7 @@ int main(void)
fd_set fdexcep;
int maxfd = -1;
int rc;
+ CURLMcode mc; /* curl_multi_fdset() return code */
long curl_timeo = -1;
@@ -109,15 +110,32 @@ int main(void)
timeout.tv_usec = (curl_timeo % 1000) * 1000;
}
- /* Get file descriptors from the transfers */
- curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
- rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
if(tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) {
fprintf(stderr,
diff --git a/docs/examples/smtp-multi.c b/docs/examples/smtp-multi.c
index 7f3d333dfe091dadcadb4a51f37e8c02400077e2..998f69e3f51ad83c429725ad03025864eb2bc4b4 100644
--- a/docs/examples/smtp-multi.c
+++ b/docs/examples/smtp-multi.c
@@ -155,6 +155,7 @@ int main(void)
fd_set fdexcep;
int maxfd = -1;
int rc;
+ CURLMcode mc; /* curl_multi_fdset() return code */
long curl_timeo = -1;
@@ -176,15 +177,32 @@ int main(void)
timeout.tv_usec = (curl_timeo % 1000) * 1000;
}
- /* Get file descriptors from the transfers */
- curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
+ select(0, ...), which is basically equal to sleeping the timeout. On
+ Windows we can't sleep via select without a dummy socket and instead
+ we Sleep() for 100ms which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+#ifdef _WIN32
+ if(maxfd == -1) {
+ Sleep(100);
+ rc = 0;
+ }
+ else
+#endif
+ {
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
if(tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) {
fprintf(stderr,